Thomson Reuters Corporates Status

ONESOURCE Determination – Emergency Database Maintenance Notification (PROD AMER environment)

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 25, 2026 - 02:00 CDT

Scheduled - ONESOURCE Determination (Enterprise Cloud and Determination Anywhere) will undergo emergency database maintenance in the PROD AMER environment on October 25, 2026, from 2:00 AM to 2:00 PM CDT. There will be no impact to the SOAP or REST APIs during this maintenance — tax calculation services remain fully available throughout. The only impact is to the application user interface, which will be unavailable for approximately 2.5 hours, between 2:00 AM and 4:30 AM CDT.
Oct 25, 2026 02:00-14:00 CDT

AMER - ONESOURCE Platform Database Maintenance - October 2026.

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 25, 2026 - 02:00 CDT

Scheduled - ONESOURCE Platform will be undergoing scheduled maintenance in AMER on Sunday Oct 25, 02:00 AM CDT - 02:00 PM CDT.
ONESOURCE Platform will be unavailable from Sunday, Oct 25, 2:00 AM CDT to 4:30 AM CDT.
In case of any issues, we recommend the users to please retry.
We appreciate your patience and understanding. If you have any urgent inquiries or require assistance during this maintenance period, please contact our support team. Thank you for your cooperation.
Oct 25, 2026 02:00-14:00 CDT

Delay in Data for reports and analytics service in AMER PROD

Update - Reports and Analytics Service in AMER PROD is currently experiencing delay of around 30 hours. We are working on the data catch up. Will notify once complete.
Oct 25, 2026 - 00:04 CDT

Update - Reports and Analytics Service in AMER PROD is currently experiencing delay of around 16 hours. We are working on the data catch up. Will notify once complete.
Oct 24, 2026 - 06:49 CDT

Update - Reports and Analytics Service in AMER PROD is currently experiencing delay of around 9 hours. We are working on the data catch up. Will notify once complete.
Oct 23, 2026 - 23:05 CDT

Investigating - Reports and Analytics Service in AMER PROD is currently experiencing a delay of around 8 hours. Our team is actively working to resolve this matter as quickly as possible. We apologize for any inconvenience and appreciate your understanding and patience.

Further updates will be provided here as soon as we have more information.
Oct 23, 2026 - 15:45 CDT

ONESOURCE Tax Information Reporting System Maintenance 24th October 2026 (AMERS)

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 24, 2026 - 22:00 CDT

Scheduled - ONESOURCE Tax Information Reporting and API's will be unavailable from 10:00 P.M. (CT) on 24th October 2026 until 07:00 A.M. (CT) on 25th October 2026 for scheduled maintenance.
Oct 24, 2026 22:00 - Oct 25, 2026 07:00 CDT

ONESOURCE Trust Tax System Maintenance Scheduled for Oct 24-25 (AMERS)

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 24, 2026 - 20:00 CDT

Scheduled - Access to ONESOURCE Trust Tax and ONESOURCE Trust Tax Insight applications will be suspended from 8:00 P.M. (CT) on Saturday, October 24, 2026, until 10:00 A.M. (CT) on Sunday, October 25, 2026. We appreciate your understanding while we perform this necessary maintenance.
Oct 24, 2026 20:00 - Oct 25, 2026 10:00 CDT

ONESOURCE Tax Provision

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 23, 2026 - 19:30 CDT

Scheduled - ONESOURCE Tax Provision will undergo server maintenance activities on October 23-25, 2026.
Oct 23, 2026 19:30 - Oct 25, 2026 11:30 CDT

WorkFlow Tools Operational

AMERS Calendar Operational

AMERS Calendar Classic Operational

AMERS FileRoom Operational

AMERS WorkFlow Operational

AMERS WorkFlow Manager Classic Operational

APAC Calendar Operational

APAC Calendar Classic Operational

APAC FileRoom Operational

APAC WorkFlow Operational

APAC WorkFlow Manager Classic Operational

EMEA Calendar Operational

EMEA Calendar Classic Operational

EMEA FileRoom Operational

EMEA WorkFlow Operational

EMEA WorkFlow Manager Classic Operational

Platform Under Maintenance

AMERS (onesourcetax.com) Under Maintenance

AMERS (onesourcelogin.com) Under Maintenance

AMERS Administration Under Maintenance

AMERS API Administration Operational

AMERS UAT (uat.onesourcetax.com) Operational

AMERS UAT (uat.onesourcelogin.com) Operational

APAC (apac1.onesourcetax.com) Operational

APAC (onesourcelogin.com.au) Operational

APAC Administration Operational

APAC API Administration Operational

EMEA (emea1.onesourcetax.com) Operational

EMEA (onesourcelogin.eu) Operational

EMEA Administration Operational

EMEA API Administration Operational

UAT API Administration Operational

UAT Administration Operational

Data Tools Operational

AMERS Audit Manager Operational

AMERS DataFlow Operational

AMERS Data Hub Operational

AMERS General Ledger Manager Operational

AMERS R&D Tax Credit Manager Operational

AMERS SAP Trial Balance Integration Operational

AMERS Workpapers Operational

APAC Audit Manager Operational

APAC DataFlow Operational

APAC Data Hub Operational

APAC General Ledger Manager Operational

APAC R&D Tax Credit Manager Operational

APAC SAP Trial Balance Integration Operational

APAC Workpapers Operational

EMEA Audit Manager Operational

EMEA DataFlow Operational

EMEA Data Hub Operational

EMEA General Ledger Manager Operational

EMEA SAP Trial Balance Integration Operational

EMEA R&D Tax Credit Manager Operational

EMEA Workpapers Operational

Direct Tax Under Maintenance

AMERS (web) BEPS Action Manager Operational

AMERS DAC6 Reporter Operational

AMERS Data Query Operational

AMERS GoSystem Tax RS Operational

AMERS GoSystem Tax RS API Operational

AMERS Income Tax Operational

AMERS Income Tax API Operational

AMERS State Apportionment Operational

AMERS (legacy) Statutory Reporting Operational

AMERS (web) Statutory Reporting Operational

AMERS (New) Tax Provision Operational

AMERS Tax Provision Under Maintenance

AMERS Uncertain Tax Positions Operational

APAC (legacy) Corporate Tax Operational

APAC (web) Corporate Tax Operational

APAC (web) E-filing Manager (Corporate Tax) Operational

APAC (web) Fringe Benefits Tax Operational

APAC (legacy) Statutory Reporting Operational

APAC (web) Statutory Reporting Operational

APAC Tax Provision Operational

APAC Trusts (AU) Operational

APAC Uncertain Tax Positions Operational

EMEA (web) BEPS Action Manager Operational

EMEA (legacy) Corporate Tax Operational

EMEA (web) Corporate Tax Operational

EMEA (web) E-filing Manager (Corporate Tax) Operational

EMEA DAC6 Reporter Operational

EMEA (legacy) Statutory Reporting Operational

EMEA (web) Statutory Reporting Operational

EMEA Tax Provision Under Maintenance

EMEA Uncertain Tax Positions Operational

Global Trade Operational

Global Trade Content Operational

Global Trade - LATAM Operational

Global Trade - pwd by Integration Point Operational

Govt Connectivity BE - PLDA Operational

Govt Connectivity DE - ATLAS Operational

Govt Connectivity FR - DELTA Operational

Govt Connectivity MX - SAAI/COVE Operational

Govt Connectivity NL - AGS Operational

Govt Connectivity UK - CHIEF/CDS Operational

Govt Connectivity US - ABI/AES Operational

GTM Platform Operational

Implementation Environment Operational

ONESOURCE Classifier Operational

Transports AS2 Operational

Transports Client Interchange Web Service Operational

Transports FTP Operational

Indirect Tax Degraded Performance

ONESOURCE Determination Enterprise Cloud (AWS AMER) Under Maintenance

ONESOURCE Determination Enterprise Cloud (AWS EMEA) Operational

ONESOURCE Determination Enterprise Cloud (OCI AMER) Under Maintenance

ONESOURCE Determination Enterprise Cloud (OCI MENA) Operational

ONESOURCE Determination Anywhere (AWS AMER) Under Maintenance

ONESOURCE Determination Anywhere (OCI AMER) Under Maintenance

ONESOURCE Determination Anywhere (OCI MENA) Operational

Configuration API (AWS AMER) Operational

Configuration API (AWS EMEA) Operational

Configuration API (OCI AMER) Operational

Configuration API (OCI MENA) Operational

ONESOURCE Determination Original Cloud (AMER) Operational

ONESOURCE Determination Original Dedicated Cloud (AMER) Operational

ONESOURCE Determination Original Dedicated Cloud (EMEA) Operational

Certificate Manager Original Cloud Operational

Certificate Manager Enterprise Cloud Operational

Reports and Analytics Enterprise Cloud Degraded Performance

Reporting - Original Cloud Operational

US Tax Content Operational

Canada Tax Content Operational

International Tax Content Operational

Content Extract Operational

Fast Sales Tax Operational

ONESOURCE Property Tax Operational

ONESOURCE Sales and Use Tax Compliance (AMER) Operational

ONESOURCE Indirect Compliance (APAC) Operational

APAC (web) E-filing Manager (Indirect Compliance) Operational

ONESOURCE Indirect Compliance (EMEA) Operational

EMEA (web) E-filing Manager (Indirect Compliance) Operational

ONESOURCE Indirect Compliance (UAT) Operational

ONESOURCE E-Invoicing (PROD) Operational

ONESOURCE E-Invoicing (UAT) Operational

ONESOURCE Determination - On Premise Operational

ONESOURCE Determination (APAC) Operational

IDT Integrations Operational

Address Validation Service Operational

BigCommerce Operational

Coupa Operational

Data File Integrator - Enterprise Cloud Operational

Data File Integrator - Original Cloud Operational

Microsoft Dynamics 365 - Commerce Cloud Operational

Microsoft Dynamics 365 - Finance Operational

Microsoft Dynamics AX 2012 Operational

Microsoft Dynamics GP Operational

NetSuite Legacy/Direct Operational

NetSuite SuiteTax Operational

Oracle EBS R12 Operational

Oracle Fusion Tax Cloud - 2.x Operational

Salesforce Subscription Management Operational

SAP 5.2B Basic (RFC) Operational

Next-gen SAP Ariba - Cloud Operational

Next-gen SAP Ariba - Original Cloud Operational

SAP Business One Operational

SAP C4/HANA Commerce Cloud Operational

SAP Global Next Operational

SAP Global Tax S/4HANA Public Cloud Operational

SAP US Tax S/4HANA Public Cloud Operational

Microsoft Dynamics 365 - Business Central Operational

Salesforce Commerce B2B Operational

SAP Ariba Invoicing Operational

Shopify Operational

Sage Intacct Operational

SAP Concur Operational

Workday Financials Operational

E-Invoicing Integrations Operational

Coupa Operational

Microsoft Dynamics 365 - Business Central Operational

Oracle Fusion CMK Operational

Oracle Fusion Embedded Operational

SAP Ariba Operational

SAP ECC Operational

SAP S/4HANA OnPrem/Private Cloud Operational

Workday Financials - Built On Workday App Operational

Trust & Info Rptg Under Maintenance

AMERS NRA - FNIS & Users Website Operational

AMERS Tax Information Reporting Under Maintenance

AMERS Trust Tax Under Maintenance

AMERS Trust Tax Insight Under Maintenance

Risk Solutions Operational

AMERS Compliance Learning Operational

AMERS Oden Online (State Rules and Regulations) Operational

AMERS Oden Policy Terminator Operational

AMERS Oden Track (web) Operational

AMERS Regulatory Intelligence Operational

ANZ Compliance Learning Operational

APAC Compliance Learning Operational

APAC Regulatory Intelligence Operational

EMEA Compliance Learning Operational

EMEA Regulatory Intelligence Operational

Tax Brazil Operational

Checkpoint Corporate Operational

ONESOURCE DFe Operational

ONESOURCE Tax Analyser Operational

Tax One for SAP® solutions Operational

Tax Brazil - Tax One Operational

AMERS – ONESOURCE Tax One Operational

AMERS – ONESOURCE ECF/REINF Messaging Operational

AMERS - Tax Reform Operational

AMERS - Tax Automation Operational

AMERS - TDM: Tax Data Management Operational

AMERS - OBI: ONESOURCE BRASIL Integration Operational

AMERS - Interfaces Operational

EMEA - ONESOURCE Tax One Operational

EMEA - ONESOURCE ECF/REINF Messaging Operational

EMEA - Tax Reform Operational

EMEA - Tax Automation Operational

EMEA - TDM: Tax Data Management Operational

EMEA - OBI: ONESOURCE BRASIL Integration Operational

EMEA - Interface Operational

Customer Support Operational

Case Management Dashboard Operational

Platform Operational

Workflow Tools Operational

Data Tools Operational

Direct Tax Operational

Global Trade Operational

Indirect Tax Operational

Trust & Info Rptg Operational

Legal Solutions Operational

Risk Solutions Operational

Tax Brazil Operational

Operational

Degraded Performance

Partial Outage

Major Outage

Maintenance

Scheduled Maintenance

OSPI Platform – AMER Emergency deployment completed on October 23, 2026 Oct `23`, `2026` `12:30`-`13:30` CDT

ONESOURCE Platform performed an emergency maintenance to rollback the latest home experience that was deployed in AMER as part of the scheduled AMER Minor release (https://corporates-status.thomsonreuters.com/incidents/bhjtnnww1hz1) on October 23, 2026. Please expect a maintenance early next week for the latest home experience deployment in AMER.
Thank you for your cooperation.
Posted on Oct 23, 2026 - 12:27 CDT

OSPI Platform – APAC User Administration release for October 2026 Oct `26`, `2026` `05:00`-`11:00` CDT

ONESOURCE Platform will be performing scheduled maintenance on our systems to ensure optimal performance and reliability.

During this maintenance window, certain services, including authorization and administration, might experience degraded performance. In such cases, we recommend trying after some time.

We apologize for any inconvenience this may cause and appreciate your patience and understanding. If you have any urgent inquiries or require assistance during the maintenance period, please contact our support team.

Thank you for your cooperation.
Posted on Sep 29, 2026 - 11:08 CDT

OSPI Platform – EMEA User Administration release for October 2026 Oct `26`, `2026` `13:00`-`19:00` CDT

OSPI Platform – AMER User Administration release for October 2026 Oct `27`, `2026` `00:00`-`06:00` CDT

ONESOURCE API Administration Backend Services and UI Oct 2026 release in UAT Oct `28`, `2026` `22:00` - Oct `29`, `2026` `03:00` CDT

ONESOURCE API Administration will undergo scheduled maintenance to enhance system performance, reliability, and UI features. Some services may be temporarily affected; please try again later if you encounter issues. We apologize for any inconvenience and appreciate your patience. For urgent assistance during this period, contact our support team. Thank you for your cooperation. For more on API Administration, see the Guide.
Posted on Oct 06, 2026 - 05:35 CDT

ONESOURCE API Administration - Security Certificate Renewal in UAT Oct `29`, `2026` `00:00`-`06:00` CDT

ONESOURCE API Administration's Security Certificates are scheduled for their annual renewal in UAT. This maintenance also includes updates to a supporting ONESOURCE Platform backend service.

Between 12:00 AM and 12:30 AM CDT on October 29, you may experience temporary token validation errors when accessing certain product endpoints.

If you experience an error, please generate a new token and retry the request. If the issue persists, please try again after a few minutes.

We apologize for any inconvenience and appreciate your patience. For urgent assistance, please contact our Support team.
Posted on Oct 21, 2026 - 03:04 CDT

ONESOURCE Determination (Enterprise Cloud and Determination Anywhere) – Urgent Platform Maintenance Notification (UAT environment) Oct `29`, `2026` `00:00`-`06:00` CDT

ONESOURCE Determination (Enterprise Cloud and Determination Anywhere) will undergo urgent platform maintenance to renew the ONESOURCE API Administration security certificates in the UAT environment on Thursday, October 29, 2026, from 12:00 AM to 6:00 AM CDT. All REST APIs (including the tax calculation REST API) and Determination Anywhere (DA) services may experience intermittent interruptions during this window.
Posted on Oct 15, 2026 - 10:44 CDT

OSPI Platform – UAT Major release for October 2026 Oct `29`, `2026` `00:00`-`09:00` CDT

ONESOURCE Platform will be performing scheduled maintenance on our systems to ensure optimal performance and reliability.

During this maintenance window, certain services, including authentication and administration, might experience degraded performance. In such cases, we recommend trying after some time.

We apologize for any inconvenience this may cause and appreciate your patience and understanding. If you have any urgent inquiries or require assistance during the maintenance period, please contact our support team.

Thank you for your cooperation.
Posted on Oct 13, 2026 - 09:45 CDT

ONESOURCE API Administration Backend Services Oct 2026 release in all Production regions Oct `29`, `2026` `01:00`-`06:00` CDT

ONESOURCE API Administration will be performing scheduled maintenance on our systems to ensure optimal performance and reliability. During this maintenance window, certain services may experience some issues. In such cases, we recommend trying after some time. We apologize for any inconvenience this may cause and appreciate your patience and understanding. If you have any urgent inquiries or require assistance during the maintenance period, please contact our support team. Thank you for your cooperation.
To explore the capabilities of API Administration, please refer to the Guide.
Posted on Oct 06, 2026 - 05:40 CDT

ONESOURCE API Administration UI Oct 2026 release – APAC Oct `29`, `2026` `07:00`-`12:00` CDT

ONESOURCE API Administration UI Oct 2026 release – EMEA Oct `29`, `2026` `16:00`-`21:00` CDT

ONESOURCE API Administration UI Oct 2026 release – AMER Oct `30`, `2026` `00:00`-`05:00` CDT

ONESOURCE API Administration - Security Certificate Renewal in APAC Oct `30`, `2026` `05:00`-`11:00` CDT

ONESOURCE API Administration's Security Certificates are scheduled for their annual renewal in APAC. This maintenance also includes updates to a supporting ONESOURCE Platform backend service.

Between 5:00 AM and 5:30 AM CDT on October 30, you may experience temporary token validation errors when accessing certain product endpoints.

If you experience an error, please generate a new token and retry the request. If the issue persists, please try again after a few minutes.

We apologize for any inconvenience and appreciate your patience. For urgent assistance, please contact our Support team.
Posted on Oct 21, 2026 - 03:05 CDT

OSPI Platform – APAC Major release for October 2026 Oct `30`, `2026` `05:00`-`14:00` CDT

ONESOURCE Platform will be performing scheduled maintenance on our systems to ensure optimal performance and reliability.

During this maintenance window, certain services, including authentication and administration, might experience degraded performance. In such cases, we recommend trying after some time.

We apologize for any inconvenience this may cause and appreciate your patience and understanding. If you have any urgent inquiries or require assistance during the maintenance period, please contact our support team.

Thank you for your cooperation.
Posted on Oct 13, 2026 - 09:46 CDT

ONESOURCE Global Trade - AWS IP Address Change on October 31st Oct `30`, `2026` `08:00`-`12:00` CDT

Upcoming Network Configuration Update for GTM Customers

On October 31, 2026, Thomson Reuters will be updating the network infrastructure used by ONESOURCE Global Trade Management (GTM). As part of this change, the IP addresses used by GTM to communicate with customer environments will be updated.

Who is affected?
You are only affected if your organization restricts access based on approved (whitelisted) IP addresses for GTM integrations or connectivity. If you are unsure whether this applies to your organization, please share this notice with your IT or network administration team.

New IP Ranges
Beginning October 31, 2026, outbound GTM traffic will originate from the following Thomson Reuters IP ranges:
• 164.57.0.0/17
• 164.57.128.0/18
• 164.57.224.0/19

Action Required
• If your organization currently whitelists GTM IP addresses, your IT or network team must update your allow lists to include the IP ranges above by October 31, 2026.
• Failure to make this update may result in GTM integrations or connectivity being disrupted after the change is implemented.
• If your organization does not use IP whitelisting for GTM access or integrations, no action is required.

Important Note
You can add these new IP ranges at any time prior to October 31, 2026, and leave the current ones in place. Please do not remove the current IP ranges until after November 1, 2026.
Posted on Oct 21, 2026 - 10:23 CDT

OSPI Platform – EMEA Major release for October 2026 Oct `31`, `2026` `13:00`-`22:00` CDT

ONESOURCE Platform will be performing scheduled maintenance on our systems to ensure optimal performance and reliability.

During this maintenance window, certain services, including authentication and administration, might experience degraded performance. In such cases, we recommend trying after some time.

We apologize for any inconvenience this may cause and appreciate your patience and understanding. If you have any urgent inquiries or require assistance during the maintenance period, please contact our support team.

Thank you for your cooperation.
Posted on Oct 13, 2026 - 09:47 CDT

ONESOURCE Determination Enterprise Cloud – Urgent Platform Maintenance Notification (EMEA environment) Oct `31`, `2026` `13:00`-`19:00` CDT

ONESOURCE Determination Enterprise Cloud will undergo urgent platform maintenance to renew the ONESOURCE API Administration security certificates in the EMEA environment on Saturday, October 31, 2026, from 1:00 PM to 7:00 PM CDT. All REST APIs (including the tax calculation REST API) may experience intermittent interruptions during this window.
Posted on Oct 15, 2026 - 10:44 CDT

ONESOURCE API Administration - Security Certificate Renewal in EMEA Oct `31`, `2026` `13:00`-`19:00` CDT

ONESOURCE API Administration's Security Certificates are scheduled for their annual renewal in EMEA. This maintenance also includes updates to a supporting ONESOURCE Platform backend service.

Between 1:00 PM and 1:30 PM CDT on October 31, you may experience temporary token validation errors when accessing certain product endpoints.

If you experience an error, please generate a new token and retry the request. If the issue persists, please try again after a few minutes.

We apologize for any inconvenience and appreciate your patience. For urgent assistance, please contact our Support team.
Posted on Oct 21, 2026 - 11:22 CDT

OSPI Platform – AMER Major release for October 2026 Nov `1`, `2026` `00:00`-`08:00` CST

ONESOURCE Platform will be performing scheduled maintenance on our systems to ensure optimal performance and reliability.

During this maintenance window, certain services, including authentication and administration, might experience degraded performance. In such cases, we recommend trying after some time.

We apologize for any inconvenience this may cause and appreciate your patience and understanding. If you have any urgent inquiries or require assistance during the maintenance period, please contact our support team.

Thank you for your cooperation.
Posted on Oct 13, 2026 - 09:47 CDT

ONESOURCE Determination (Enterprise Cloud and Determination Anywhere) – Urgent Platform Maintenance Notification (AMER environment) Nov `1`, `2026` `00:00`-`05:00` CST

ONESOURCE Determination (Enterprise Cloud and Determination Anywhere) will undergo urgent platform maintenance to renew the ONESOURCE API Administration security certificates in the AMER environment on Sunday, November 1, 2026, from 12:00 AM to 5:00 AM CST. All REST APIs (including the tax calculation REST API) and Determination Anywhere (DA) services may experience intermittent interruptions during this window.
Posted on Oct 15, 2026 - 10:50 CDT

ONESOURCE API Administration - Security Certificate Renewal in AMER Nov `1`, `2026` `00:00`-`05:00` CST

ONESOURCE API Administration's Security Certificates are scheduled for their annual renewal in AMER. This maintenance also includes updates to a supporting ONESOURCE Platform backend service.

Between 12:00 AM and 12:30 AM CDT on November 1, you may experience temporary token validation errors when accessing certain product endpoints.

If you experience an error, please generate a new token and retry the request. If the issue persists, please try again after a few minutes.

We apologize for any inconvenience and appreciate your patience. For urgent assistance, please contact our Support team.
Posted on Oct 21, 2026 - 03:06 CDT

ONESOURCE Events Backend Services October 2026 release in APAC Nov `3`, `2026` `07:00`-`12:00` CST

ONESOURCE Events will be performing scheduled maintenance on our systems to ensure optimal performance and reliability. During this maintenance window, certain services may experience some issues. In such cases, we recommend trying after some time. We apologize for any inconvenience this may cause and appreciate your patience and understanding. If you have any urgent inquiries or require assistance during the maintenance period, please contact our support team. Thank you for your cooperation. To explore the capabilities of ONESOURCE Events, please refer to the Guide.
Posted on Oct 06, 2026 - 05:11 CDT

ONESOURCE Events Backend Services October 2026 release in EMEA Nov `3`, `2026` `16:00`-`21:00` CST

ONESOURCE Events Backend Services October 2026 release in AMER Nov `4`, `2026` `00:00`-`05:00` CST

This maintenance will start on November 4, 2026 at 12:00 CDT, midnight.

ONESOURCE Events will be performing scheduled maintenance on our systems to ensure optimal performance and reliability. During this maintenance window, certain services may experience some issues. In such cases, we recommend trying after some time. We apologize for any inconvenience this may cause and appreciate your patience and understanding. If you have any urgent inquiries or require assistance during the maintenance period, please contact our support team. Thank you for your cooperation. To explore the capabilities of ONESOURCE Events, please refer to the Guide.
Posted on Oct 06, 2026 - 05:19 CDT

APAC - Classic ONESOURCE Workflow Manager suite of products - Security Maintenance Application server patching for October 2026. Nov `7`, `2026` `07:00`-`11:00` CST

The classic ONESOURCE Workflow Manager suite of products will be undergoing maintenance in APAC on Saturday, Nov 07, 07:00 AM - 11:00 AM CST.
We do not anticipate any service disruption; however, in the unlikely event you experience any degraded performance, please retry after a few minutes.
We appreciate your patience and understanding. If you have any urgent inquiries or require assistance during this maintenance period, please contact our support team. Thank you for your cooperation.
Posted on Oct 22, 2026 - 15:39 CDT

EMEA - Classic ONESOURCE Workflow Manager suite of products - Security Maintenance Application server patching for October 2026. Nov `7`, `2026` `18:00`-`22:00` CST

The classic ONESOURCE Workflow Manager suite of products will be undergoing maintenance in EMEA on Saturday, Nov 07, 06:00 PM - 10:00 PM CST.
We do not anticipate any service disruption; however, in the unlikely event you experience any degraded performance, please retry after a few minutes.

We appreciate your patience and understanding. If you have any urgent inquiries or require assistance during this maintenance period, please contact our support team. Thank you for your cooperation.
Posted on Oct 22, 2026 - 15:38 CDT

ONESOURCE GTM4 – Maintenance Nov `8`, `2026` `00:00`-`17:00` CST

Thomson Reuters will be performing scheduled maintenance on Sunday, November 8th, 2026 beginning at 1 AM Eastern time and will conclude by Sunday, November 8th, 2026 at 6 PM Eastern time.

The maintenance will include updates and patches to implementation and production environments. During this maintenance there will be intermittent downtime, and you will not be able to access implementation and production instances.

If you have any questions or concerns, please contact Customer Support.
Posted on Oct 20, 2026 - 11:50 CDT

AMER - Classic ONESOURCE Workflow Manager suite of products - Security Maintenance Application server patching for October 2026. Nov `8`, `2026` `00:00`-`04:00` CST

The classic ONESOURCE Workflow Manager suite of products will be undergoing maintenance in AMER on Sunday, Nov 08, 12:00 AM - 04:00 AM CST.
We do not anticipate any service disruption; however, in the unlikely event you experience any degraded performance, please retry after a few minutes.

We appreciate your patience and understanding. If you have any urgent inquiries or require assistance during this maintenance period, please contact our support team. Thank you for your cooperation.
Posted on Oct 22, 2026 - 15:38 CDT

ONESOURCE GTM4 – Maintenance Nov `8`, `2026` `00:00`-`17:00` CST

ONESOURCE Determination Enterprise Cloud – Version 2026.06 Release Information (PROD EMEA environment) Nov `10`, `2026` `04:00`-`08:00` CST

ONESOURCE Determination Enterprise Cloud – Version 2026.06 is being deployed in the PROD EMEA environment on November 10, 2026. Your access to the tax calculation services and the application will not be interrupted.
Posted on Oct 14, 2026 - 03:56 CDT

ONESOURCE Determination Enterprise Cloud – Version 2026.06 Release Information (PROD MENA environment) Nov `10`, `2026` `08:00`-`12:00` CST

ONESOURCE Determination Enterprise Cloud – Version 2026.06 is being deployed in the PROD MENA environment on November 10, 2026. Your access to the tax calculation services and the application will not be interrupted.
Posted on Oct 14, 2026 - 03:55 CDT

ONESOURCE Determination Anywhere – Version 2026.06 Release Information (PROD MENA environment) Nov `10`, `2026` `10:00`-`16:00` CST

ONESOURCE Determination Anywhere – Version 2026.06 is being deployed in the PROD MENA environment on November 10, 2026. Your access to the tax calculation services and the application will not be interrupted.
Posted on Oct 14, 2026 - 03:42 CDT

ONESOURCE Determination Enterprise Cloud – Version 2026.06 Release Information (PROD AMER environment) Nov `19`, `2026` `04:00`-`10:00` CST

ONESOURCE Determination Enterprise Cloud – Version 2026.06 is being deployed in the PROD AMER environment on November 19, 2026. Your access to the tax calculation services and the application will not be interrupted.
Posted on Oct 14, 2026 - 03:58 CDT

ONESOURCE Determination Anywhere – Version 2026.06 Release Information (PROD AMER environment) Nov `19`, `2026` `06:00`-`12:00` CST

ONESOURCE Determination Anywhere – Version 2026.06 is being deployed in the PROD AMER environment on November 19, 2026. Your access to the tax calculation services and the application will not be interrupted.
Posted on Oct 14, 2026 - 03:44 CDT

ONESOURCE Tax Information Reporting System Maintenance 21st November 2026 (AMERS) Nov `21`, `2026` `22:00` - Nov `22`, `2026` `07:00` CST

ONESOURCE Tax Information Reporting and API's will be unavailable from 10:00 P.M. (CT) on 21st November  2026 until 07:00 A.M. (CT) on 22nd November 2026 for scheduled maintenance.
Posted on Nov 20, 2025 - 05:37 CST

ONESOURCE GTM4 – Maintenance Nov `22`, `2026` `00:00`-`17:00` CST

Thomson Reuters will be performing scheduled maintenance on Sunday, November 22nd, 2026 beginning at 1 AM Eastern time and will conclude by Sunday, November 22nd, 2026 at 6 PM Eastern time.

The maintenance will include updates and patches to implementation and production environments. During this maintenance there will be intermittent downtime, and you will not be able to access implementation and production instances.

If you have any questions or concerns, please contact Customer Support.
Posted on Sep 23, 2026 - 05:41 CDT

ONESOURCE GTM4 – Maintenance Nov `22`, `2026` `00:00`-`17:00` CST

ONESOURCE Tax Information Release OTIR Release 26.05 1st December 2026 (AMERS) Dec `1`, `2026` `19:00` - Dec `2`, `2026` `06:00` CST

ONESOURCE Tax Information Reporting Release 26.05 will be installed from 7:00 P.M. (CT) on 1st December 2026 until 06:00 A.M. (CT) on 2nd December 2026. System availability and API's may be affected during release time.
Posted on Nov 20, 2025 - 05:38 CST

ONESOURCE GTM4 – Maintenance Dec `6`, `2026` `00:00`-`17:00` CST

Thomson Reuters will be performing scheduled maintenance on Sunday, December 6th, 2026 beginning at 1 AM Eastern time and will conclude by Sunday, December 6th, 2026 at 6 PM Eastern time.

The maintenance will include updates and patches to implementation and production environments. During this maintenance there will be intermittent downtime, and you will not be able to access implementation and production instances.

If you have any questions or concerns, please contact Customer Support.
Posted on Sep 23, 2026 - 05:43 CDT

ONESOURCE GTM4 – Maintenance Dec `20`, `2026` `00:00`-`17:00` CST

Thomson Reuters will be performing scheduled maintenance on Sunday, December 20th, 2026 beginning at 1 AM Eastern time and will conclude by Sunday, December 20th, 2026 at 6 PM Eastern time.

The maintenance will include updates and patches to implementation and production environments. During this maintenance there will be intermittent downtime, and you will not be able to access implementation and production instances.

If you have any questions or concerns, please contact Customer Support.
Posted on Sep 23, 2026 - 05:44 CDT

ONESOURCE Tax Information Release OTIR Release 26.06 22nd December 2026 (AMERS) Dec `22`, `2026` `19:00` - Dec `23`, `2026` `06:00` CST

ONESOURCE Tax Information Reporting Release 26.06 will be installed from 7:00 P.M. (CT) on 22nd December 2026 until 06:00 A.M. (CT) on 23rd December 2026. System availability and API's may be affected during release time.
Posted on Nov 20, 2025 - 05:38 CST

ONESOURCE Tax Information Reporting System Maintenance 26th December 2026 (AMERS) Dec `26`, `2026` `22:00` - Dec `27`, `2026` `07:00` CST

ONESOURCE Tax Information Reporting and API's will be unavailable from 10:00 P.M. (CT) on 26th December 2026 until 07:00 A.M. (CT) on 27th December 2026 for scheduled maintenance.
Posted on Nov 20, 2025 - 05:39 CST

ONESOURCE GTM4 – Maintenance Jan `3`, `2027` `00:00`-`17:00` CST

Thomson Reuters will be performing scheduled maintenance on Sunday, January 3rd, 2027 beginning at 1 AM Eastern time and will conclude by Sunday, January 3rd, 2027 at 6 PM Eastern time.

The maintenance will include updates and patches to implementation and production environments. During this maintenance there will be intermittent downtime, and you will not be able to access implementation and production instances.

If you have any questions or concerns, please contact Customer Support.
Posted on Sep 23, 2026 - 05:45 CDT

ONESOURCE GTM4 – Maintenance Jan `17`, `2027` `00:00`-`17:00` CST

Thomson Reuters will be performing scheduled maintenance on Sunday, January 17th, 2027 beginning at 1 AM Eastern time and will conclude by Sunday, January 17th, 2027 at 6 PM Eastern time.

The maintenance will include updates and patches to implementation and production environments. During this maintenance there will be intermittent downtime, and you will not be able to access implementation and production instances.

If you have any questions or concerns, please contact Customer Support.
Posted on Sep 23, 2026 - 05:46 CDT

ONESOURCE GTM4 – Maintenance Feb `7`, `2027` `00:00`-`17:00` CST

Thomson Reuters will be performing scheduled maintenance on Sunday, February 7th, 2027 beginning at 1 AM Eastern time and will conclude by Sunday, February 7th, 2027 at 6 PM Eastern time.

The maintenance will include updates and patches to implementation and production environments. During this maintenance there will be intermittent downtime, and you will not be able to access implementation and production instances.

If you have any questions or concerns, please contact Customer Support.
Posted on Sep 23, 2026 - 05:47 CDT

ONESOURCE Tax Information Release OTIR Release 26.07 16th February 2027 (AMERS) Feb `16`, `2027` `19:00` - Feb `17`, `2027` `06:00` CST

ONESOURCE Tax Information Reporting Release 26.07 will be installed from 7:00 P.M. (CT) on 16th February 2027 until 06:00 A.M. (CT) on 17th February 2027. System availability and API's may be affected during release time.
Posted on Nov 20, 2025 - 05:48 CST

ONESOURCE GTM4 – Maintenance Feb `21`, `2027` `00:00`-`17:00` CST

Thomson Reuters will be performing scheduled maintenance on Sunday, February 21st, 2027 beginning at 1 AM Eastern time and will conclude by Sunday, February 21st, 2027 at 6 PM Eastern time.

The maintenance will include updates and patches to implementation and production environments. During this maintenance there will be intermittent downtime, and you will not be able to access implementation and production instances.

If you have any questions or concerns, please contact Customer Support.
Posted on Sep 23, 2026 - 05:48 CDT

ONESOURCE GTM4 – Maintenance Mar `7`, `2027` `00:00`-`17:00` CST

Thomson Reuters will be performing scheduled maintenance on Sunday, March 7th, 2027 beginning at 1 AM Eastern time and will conclude by Sunday, March 7th, 2027 at 6 PM Eastern time.

The maintenance will include updates and patches to implementation and production environments. During this maintenance there will be intermittent downtime, and you will not be able to access implementation and production instances.

If you have any questions or concerns, please contact Customer Support.
Posted on Sep 23, 2026 - 05:48 CDT

ONESOURCE GTM4 – Maintenance Mar `21`, `2027` `00:00`-`17:00` CDT

Thomson Reuters will be performing scheduled maintenance on Sunday, March 21st, 2027 beginning at 1 AM Eastern time and will conclude by Sunday, March 21st, 2027 at 6 PM Eastern time.

The maintenance will include updates and patches to implementation and production environments. During this maintenance there will be intermittent downtime, and you will not be able to access implementation and production instances.

If you have any questions or concerns, please contact Customer Support.
Posted on Sep 23, 2026 - 05:49 CDT

ONESOURCE GTM4 – Maintenance Apr `4`, `2027` `00:00`-`17:00` CDT

Thomson Reuters will be performing scheduled maintenance on Sunday, April 4th, 2027 beginning at 1 AM Eastern time and will conclude by Sunday, April 4th, 2027 at 6 PM Eastern time.

The maintenance will include updates and patches to implementation and production environments. During this maintenance there will be intermittent downtime, and you will not be able to access implementation and production instances.

If you have any questions or concerns, please contact Customer Support.
Posted on Sep 23, 2026 - 05:50 CDT

Past Incidents

Oct `25`, `2026`

ONESOURCE Determination Enterprise Cloud – Emergency Database Maintenance Notification (PROD EMEA environment)

Completed - The scheduled maintenance has been completed.
Oct 25, 00:01 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 24, 18:00 CDT

Scheduled - ONESOURCE Determination Enterprise Cloud will undergo emergency database maintenance in the PROD EMEA environment on October 24, 2026, from 6:00 PM to 11:59 PM CDT. There will be no impact to the SOAP or REST APIs during this maintenance — tax calculation services remain fully available throughout. The only impact is to the application user interface, which will be unavailable for approximately 2 hours, between 6:00 PM and 8:00 PM CDT.
Oct 13, 03:39 CDT

EMEA - ONESOURCE Platform Database Maintenance - October 2026.

Completed - The scheduled maintenance has been completed.
Oct 25, 00:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 24, 18:01 CDT

Scheduled - ONESOURCE Platform will be undergoing scheduled maintenance in EMEA on Saturday Oct 24, 06:00 PM CDT to 11:59 PM CDT.
ONESOURCE Platform will be unavailable from Saturday Oct 24, 06:00 PM CDT to 08:00 PM CDT. In case of any issues, we recommend the users to please retry.
We appreciate your patience and understanding. If you have any urgent inquiries or require assistance during this maintenance period, please contact our support team. Thank you for your cooperation.
Oct 6, 16:11 CDT

Oct `24`, `2026`

APAC - ONESOURCE Platform Database Maintenance - October 2026.

Completed - The scheduled maintenance has been completed.
Oct 24, 17:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 24, 11:00 CDT

Scheduled - ONESOURCE Platform will be undergoing scheduled maintenance in APAC on Saturday, Oct 24, 11:00 AM CDT to 05:00 PM CDT.
ONESOURCE Platform will be unavailable from Saturday Oct 24, 11:00 AM CDT to 01:00 PM CDT. In case of any issues, we recommend the users to please retry.
We appreciate your patience and understanding. If you have any urgent inquiries or require assistance during this maintenance period, please contact our support team. Thank you for your cooperation.
Oct 6, 16:11 CDT

Action Required: Update Oracle Fusion Cloud Allowlist for ONESOURCE Determination AWS Network Change by 31 October 2026 (AWS AMER)

Completed - The scheduled maintenance has been completed.
Oct 24, 12:31 CDT

Scheduled - Thomson Reuters is upgrading the network infrastructure hosting ONESOURCE Enterprise Cloud Determination in AWS AMER Region. We are migrating from NAT gateway-based connectivity to AWS PrivateLink (VPC Endpoints).

What You Need to Know:
If your organization whitelists Thomson Reuters gateway IP addresses in your Oracle Fusion Cloud firewall rules, you must update those rules before 31 October 2026.

Effective Date: 31 October 2026
Expected Downtime: None
Impact if No Action: Tax calls will fail; tax calculation disrupted

Your Action Items:

1. Confirm applicability – Is whitelisting currently enabled for NAT Gateway IP addresses in Oracle Fusion Cloud?
2. Confirm Region – Is ONESOURCE Determination endpoint hosted in AWS?
3. Add IP Addresses to Allowlist – If Yes for 1 and 2, then add following IP Addresses to Allowlist
164.57.0.0/17
164.57.128.0/18
164.57.224.0/19
4. Remove old NAT gateway IPs after cutover is confirmed

Need Help?
- Submit support case with subject 'Reg Upcoming AWS NAT Gateway Changes'
Oct 22, 03:41 CDT

Action Required: Update Oracle Fusion Cloud Allowlist for ONESOURCE Determination AWS Network Change by 31 October 2026 (AWS EMEA)

Completed - The scheduled maintenance has been completed.
Oct 24, 12:30 CDT

Scheduled - Thomson Reuters is upgrading the network infrastructure hosting ONESOURCE Enterprise Cloud Determination in AWS EMEA Region. We are migrating from NAT gateway-based connectivity to AWS PrivateLink (VPC Endpoints).

What You Need to Know:

If your organization whitelists Thomson Reuters gateway IP addresses in your Oracle Fusion Cloud firewall rules, you must update those rules before 31 October 2026.

Effective Date: 31 October 2026
Expected Downtime: None
Impact if No Action: Tax calls will fail; tax calculation disrupted

Your Action Items:

1. Confirm applicability – Is whitelisting currently enabled for NAT Gateway IP addresses in Oracle Fusion Cloud?
2. Confirm Region – Is ONESOURCE Determination endpoint hosted in AWS?
3. Add IP Addresses to Allowlist – If Yes for 1 and 2, then add following IP Addresses to Allowlist
164.57.0.0/17
164.57.128.0/18
164.57.224.0/19
4. Remove old NAT gateway IPs after cutover is confirmed

Need Help?
- Submit support case with subject 'Reg Upcoming AWS NAT Gateway Changes'
Oct 22, 03:43 CDT

ONESOURCE Determination – Emergency Database Maintenance Notification (UAT AMER environment)

Completed - The scheduled maintenance has been completed.
Oct 24, 09:01 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 24, 03:00 CDT

Scheduled - ONESOURCE Determination (Enterprise Cloud and Determination Anywhere) will undergo emergency database maintenance in the UAT AMER environment on October 24, 2026, from 3:00 AM to 9:00 AM CDT. There will be no impact to the SOAP or REST APIs during this maintenance — tax calculation services remain fully available throughout. The only impact is to the application user interface, which will be unavailable for approximately 2 hours, between 3:00 AM and 5:00 AM CDT.
Oct 13, 03:37 CDT

ONESOURCE Determination Enterprise Cloud – Emergency Database Maintenance Notification (UAT EMEA environment)

Completed - The scheduled maintenance has been completed.
Oct 24, 09:01 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 24, 03:01 CDT

Scheduled - ONESOURCE Determination Enterprise Cloud will undergo emergency database maintenance in the UAT EMEA environment on October 24, 2026, from 3:00 AM to 9:00 AM CDT. There will be no impact to the SOAP or REST APIs during this maintenance — tax calculation services remain fully available throughout. The only impact is to the application user interface, which will be unavailable for approximately 2 hours, between 3:00 AM and 5:00 AM CDT.
Oct 13, 03:36 CDT

UAT - ONESOURCE Platform Database Maintenance - October 2026.

Completed - The scheduled maintenance has been completed.
Oct 24, 09:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 24, 03:01 CDT

Scheduled - ONESOURCE Platform will be undergoing scheduled maintenance in UAT on Saturday, Oct 24, 3:00 AM – 9:00 AM CDT
ONESOURCE Platform will be unavailable from Saturday Oct 24, 3:00 AM CDT to 5:00 AM CDT. In case of any issues, we recommend the users to please retry.
We appreciate your patience and understanding. If you have any urgent inquiries or require assistance during this maintenance period, please contact our support team. Thank you for your cooperation.
Oct 6, 16:11 CDT

ONESOURCE Trust Tax System Maintenance Scheduled for Oct 23-24 (AMERS)

Completed - The scheduled maintenance has been completed.
Oct 24, 01:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 23, 22:00 CDT

Scheduled - Between the hours of 10 P.M. (CT) and 1 A.M. (CT) tonight we will be performing a maintenance activity that may disrupt any active ONESOURCE Trust Tax and ONESOURCE Trust Tax Insight sessions. The disruption should be no more than 15 minutes at some point during this window. We appreciate your understanding while we perform this necessary maintenance.
Oct 23, 15:41 CDT

Oct `23`, `2026`

Abacus EMEA OCT and OAP Citrix servers security patching

Completed - The scheduled maintenance has been completed.
Oct 23, 23:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 23, 19:00 CDT

Scheduled - Abacus EMEA OCT and OAP Citrix servers will be undergoing scheduled maintenance from Saturday 24th October 05:30 IST to Saturday 24th October 09:30 IST.
Oct 20, 03:14 CDT

ONESOURCE Trusts - Release Update

Completed - The scheduled maintenance has been completed.
Oct 23, 16:31 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 23, 10:31 CDT

Scheduled - The release scheduled for October 17th has been postponed. We apologise for the inconvenience.

ONESOURCE Trusts will be unavailable during the revised period specified below:

Saturday October 24th, 02:30 AEDT to 08:30 AEDT

This downtime supports the latest product release (October 2026) and ongoing platform improvements. We appreciate your patience as we continue to enhance your experience. We will notify you of any changes at the earliest.
Oct 15, 07:37 CDT

ONESOURCE Corporate Tax - Release Update

Completed - The scheduled maintenance has been completed.
Oct 23, 16:30 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 23, 10:30 CDT

Scheduled - The release scheduled for October 17th has been postponed. We apologise for the inconvenience.

ONESOURCE Corporate Tax will be unavailable during the revised period specified below:

Saturday October 24th, 02:30 AEDT to 08:30 AEDT

This downtime supports the latest product release (October 2026) and ongoing platform improvements. We appreciate your patience as we continue to enhance your experience. We will notify you of any changes at the earliest.
Oct 15, 07:36 CDT

Reports and Analytics release Version 2026.09 in AMER PROD region

Completed - The scheduled maintenance has been completed.
Oct 23, 13:00 CDT

Scheduled - We would like to inform you that the deployment of Reports and Analytics release version 2026.09 is scheduled for AMER production environment on Oct 23, 2026. The maintenance window is from 06:00 AM to 1:00 PM CDT. To learn about the changes that come with this release, please refer to the release notes accessible via this link.
Reports and Analytics User interface will be unavailable until the maintenance is completed. Indirect Tax calculation remains unaffected.
Note: We anticipate that the Reporting data transfer (ETL) process will be completed by 3:00 PM CDT, two hours after the maintenance is finished.
Thank you for your understanding and patience during this time. Please let us know if you have any questions or concerns.
Oct 20, 02:39 CDT

ONESOURCE Determination Anywhere – Version 2026.06 Release Information (UAT AMER environment)

Completed - The scheduled maintenance has been completed.
Oct 23, 12:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 23, 06:00 CDT

Scheduled - ONESOURCE Determination Anywhere – Version 2026.06 is being deployed in the UAT AMER environment on October 23, 2026. Your access to the tax calculation services and the application will not be interrupted.
Oct 14, 03:38 CDT

ONESOURCE Determination Enterprise Cloud – Version 2026.06 Release Information (UAT AMER environment)

Completed - The scheduled maintenance has been completed.
Oct 23, 10:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 23, 04:00 CDT

Scheduled - ONESOURCE Determination Enterprise Cloud – Version 2026.06 is being deployed in the UAT AMER environment on October 23, 2026. Your access to the tax calculation services and the application will not be interrupted.
Oct 14, 03:53 CDT

OSPI Platform – UAT User Administration release for October 2026

Completed - The scheduled maintenance has been completed.
Oct 23, 06:02 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 23, 00:00 CDT

Scheduled - ONESOURCE Platform will be performing scheduled maintenance on our systems to ensure optimal performance and reliability.

During this maintenance window, certain services, including authorization and administration, might experience degraded performance.

In such cases, we recommend trying after some time. We apologize for any inconvenience this may cause and appreciate your patience and understanding. If you have any urgent inquiries or require assistance during the maintenance period, please contact our support team.

Thank you for your cooperation.
Sep 29, 11:07 CDT

OSPI Platform – AMER Minor release for October 2026

Completed - The scheduled maintenance has been completed.
Oct 23, 06:01 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 23, 00:01 CDT

Scheduled - ONESOURCE Platform will be performing scheduled maintenance on our systems to ensure optimal performance and reliability. During this maintenance window, certain services, including authentication and administration, might experience degraded performance. In such cases, we recommend trying after some time. We apologize for any inconvenience this may cause and appreciate your patience and understanding. If you have any urgent inquiries or require assistance during the maintenance period, please contact our support team. Thank you for your cooperation.
Sep 29, 10:13 CDT

ONESOURCE Workpapers Maintenance [AMERS]

Completed - The scheduled maintenance has been completed.
Oct 23, 02:01 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 22, 18:00 CDT

Scheduled - ONESOURCE Workpapers will be unavailable from Oct 22, 2026, 06:00 P.M. (CT) until Oct 23, 2026 3:00 A.M. (CT) for scheduled maintenance.
Oct 19, 10:30 CDT

ONESOURCE Tax Provision - AMERS

Completed - The scheduled maintenance has been completed.
Oct 23, 02:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 22, 23:00 CDT

Scheduled - ONESOURCE Tax Provision will be undergoing release and maintenance activities
Oct 13, 03:55 CDT

ONESOURCE Income tax Maintenance

Completed - The scheduled maintenance has been completed.
Oct 23, 01:30 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 23, 00:02 CDT

Scheduled - ONESOURCE Income Tax will be undergoing maintenance on Friday, Oct 23rd between 12:00am – 1:30am CT.
Oct 19, 10:41 CDT

Oct `22`, `2026`

ONESOURCE Corporate Tax NextGen - Release Update

Completed - The scheduled maintenance has been completed.
Oct 22, 23:30 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 22, 17:30 CDT

Scheduled - The release scheduled for October 15th-16th has been postponed. We apologise for the inconvenience.

ONESOURCE Corporate Tax NextGen will be unavailable during the revised period specified below:

Thursday October 22nd, 23:30 BST to Friday October 23rd, 05:30 BST

This downtime supports the latest product release (October 2026) and ongoing platform improvements. We appreciate your patience as we continue to enhance your experience. We will notify you of any changes at the earliest.
Oct 15, 07:35 CDT

ONESOURCE Data Query Maintenance

Completed - The scheduled maintenance has been completed.
Oct 22, 22:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 22, 17:00 CDT

Scheduled - ONESOURCE Data Query will be undergoing maintenance on Thursday, Oct 22nd between 5:00pm – 10:00pm CT.
Oct 19, 10:41 CDT

OSPI Platform – EMEA Minor release for October 2026

Completed - The scheduled maintenance has been completed.
Oct 22, 19:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 22, 13:00 CDT

Scheduled - ONESOURCE Platform will be performing scheduled maintenance on our systems to ensure optimal performance and reliability. During this maintenance window, certain services, including authentication and administration, might experience degraded performance. In such cases, we recommend trying after some time. We apologize for any inconvenience this may cause and appreciate your patience and understanding. If you have any urgent inquiries or require assistance during the maintenance period, please contact our support team. Thank you for your cooperation.
Sep 29, 10:08 CDT

ONESOURCE Tax Provision

Completed - The scheduled maintenance has been completed.
Oct 22, 17:02 CDT

Scheduled - Dear Customers,

Please be aware that ONESOURCE Tax Provision will be undergoing release and maintenance activities on October 22-23, 2026. We are excited to announce the release of a number of enhancements and fixes to improve your product experience.

The production release will take place on:
October 22, 2026, 3:00 PM to 5:00 PM CT (EMEA)
October 22-23, 2026: 11:00 PM to 2:00 AM CT (AMERS)

Users may experience downtime in ONESOURCE Tax Provision due to these activities.

To learn more about what is being released, please refer to the Release Notes section of Tax Provision Help.

Thank you for your continued support, and we look forward to providing you with the best possible tax provision solution.

Warmest regards,
ONESOURCE Tax Provision Product Management
Oct 13, 03:54 CDT

ONESOURCE Tax Provision - EMEA

Completed - The scheduled maintenance has been completed.
Oct 22, 17:01 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 22, 15:01 CDT

Scheduled - ONESOURCE Tax Provision will be undergoing release and maintenance activities.
Oct 13, 03:54 CDT

Reports and Analytics release Version 2026.09 in EMEA PROD region

Completed - The scheduled maintenance has been completed.
Oct 22, 15:00 CDT

Scheduled - We would like to inform you that the deployment of Reports and Analytics release version 2026.09 is scheduled for EMEA production environment on Oct 22, 2026. The maintenance window is from 08:00 AM to 3:00 PM CDT. To learn about the changes that come with this release, please refer to the release notes accessible via this link.
Reports and Analytics User interface will be unavailable until the maintenance is completed. Indirect Tax calculation remains unaffected.
Note: We anticipate that the Reporting data transfer (ETL) process will be completed by 5:00 PM CDT, two hours after the maintenance is finished.
Thank you for your understanding and patience during this time. Please let us know if you have any questions or concerns.
Oct 20, 02:33 CDT

ONESOURCE Oracle Fusion Rate to Regime Content release for CANADA NOVEMBER 2026

Completed - The scheduled maintenance has been completed.
Oct 22, 12:30 CDT

Scheduled - ONESOURCE Oracle Fusion Rate to Regime Content release Content for CANADA region for NOVEMBER 2026 has been released. It is available in Integration UI for download. Please note that there will be no incremental file for November 2026.
Oct 21, 09:05 CDT

ONESOURCE Oracle Fusion Rate to Regime Content release for LATAM OCTOBER 2026

Completed - The scheduled maintenance has been completed.
Oct 22, 12:30 CDT

Scheduled - ONESOURCE Oracle Fusion Rate to Regime Content release Content for LATAM region for OCTOBER 2026 has been released. It is available in Integration UI for download.
Oct 21, 10:33 CDT

ONESOURCE Workpapers Maintenance [APAC]

Completed - The scheduled maintenance has been completed.
Oct 22, 12:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 22, 09:00 CDT

Scheduled - ONESOURCE Workpapers will be unavailable from Oct 22, 2026, 9:00 A.M. (CT) until Oct 22, 2026 12:00 P.M. (CT) for scheduled maintenance.
Oct 19, 10:30 CDT

OSPI Platform – APAC Minor release for October 2026

Completed - The scheduled maintenance has been completed.
Oct 22, 11:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 22, 05:00 CDT

Scheduled - ONESOURCE Platform will be performing scheduled maintenance on our systems to ensure optimal performance and reliability. During this maintenance window, certain services, including authentication and administration, might experience degraded performance. In such cases, we recommend trying after some time. We apologize for any inconvenience this may cause and appreciate your patience and understanding. If you have any urgent inquiries or require assistance during the maintenance period, please contact our support team. Thank you for your cooperation.
Sep 29, 10:04 CDT

Delay in Data for reports and analytics service in AMER PROD

Resolved - The data catch-up is completed.
Oct 22, 05:24 CDT

Update - Reports and Analytics Service in AMER PROD is currently experiencing delay of around 6 hours. We are working on the data catch up. Will notify once complete.
Oct 22, 04:38 CDT

Update - Reports and Analytics Service in AMER PROD is currently experiencing delay of around 7 hours 30 mins. We are working on the data catch up. Will notify once complete.
Oct 21, 23:34 CDT

Update - Reports and Analytics Service in AMER PROD is currently experiencing delay of around 6 hours. We are working on the data catch up. Will notify once complete.
Oct 21, 16:59 CDT

Update - Reports and Analytics Service in AMER PROD is currently experiencing delay of around 11 hours. We are working on the data catch up. Will notify once complete.
Oct 21, 10:35 CDT

Update - Reports and Analytics Service in AMER PROD is currently experiencing delay of around 10 hours. We are working on the data catch up. Will notify once complete.
Oct 21, 05:11 CDT

Update - Reports and Analytics Service in AMER PROD is currently experiencing delay of around 6 hours. We are working on the data catch up. Will notify once complete.
Oct 20, 08:20 CDT

Investigating - We are currently experiencing delays in processing Reports and Analytics Service in AMER PROD and is currently experiencing delay of around 7 hours. We are working on the data catch up. Will notify once complete with our Reports and Analytics Service.
Oct 19, 20:35 CDT

Oct `21`, `2026`

ONESOURCE Determination Anywhere – Version 2026.06 Release Information (UAT MENA environment)

Completed - The scheduled maintenance has been completed.
Oct 21, 16:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 21, 10:00 CDT

Scheduled - ONESOURCE Determination Anywhere – Version 2026.06 is being deployed in the UAT MENA environment on October 21, 2026. Your access to the tax calculation services and the application will not be interrupted.
Oct 14, 03:36 CDT

ONESOURCE Determination Enterprise Cloud – Clarification on Patch Version Numbering (2026.05 Series)

Completed - The scheduled maintenance has been completed.
Oct 21, 12:01 CDT

Scheduled - Clarification on patch version numbering: the patch released on October 16 (UAT) and October 19 (PROD), 2026 is version 2026.05.08. Two earlier patches were announced with the wrong numbers: the one announced as 2026.05.08 (late September) is actually 2026.05.05, and the one announced as 2026.05.09 (early October) is actually 2026.05.07. We are correcting the release notes on our Help and Support pages. No action is required.
Oct 21, 03:23 CDT

ONESOURCE Determination Enterprise Cloud – Version 2026.06 Release Information (UAT MENA environment)

Completed - The scheduled maintenance has been completed.
Oct 21, 12:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 21, 08:01 CDT

Scheduled - ONESOURCE Determination Enterprise Cloud – Version 2026.06 is being deployed in the UAT MENA environment on October 21, 2026. Your access to the tax calculation services and the application will not be interrupted.
Oct 14, 03:49 CDT

ONESOURCE Global Trade - Intermittent Validation Issues for FTZ Customers

Resolved - This incident has been resolved.
Oct 21, 10:55 CDT

Monitoring - The issue has been mitigated. We will continue to monitor for the next few hours.
Oct 21, 09:26 CDT

Identified - The issue has been identified, and we are working on the mitigation.
Oct 21, 09:15 CDT

Investigating - We are currently experiencing intermittent issues with FTZ Staging Validations within the US FTZ application of Global Trade. We are working to mitigate the issue now.
Oct 21, 07:59 CDT

ONESOURCE Determination – Configuration API Version 2026.06 - Production Release Information (AMER Region)

Completed - The scheduled maintenance has been completed.
Oct 21, 09:01 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 21, 04:01 CDT

Scheduled - ONESOURCE Determination – Configuration API Version 2026.06 is being deployed in the AMERS Production environment. No downtime is expected during this deployment window.
Oct 19, 02:23 CDT

ONESOURCE Determination – Configuration API Version 2026.06 Release Information (AMER Region)

Completed - The scheduled maintenance has been completed.
Oct 21, 09:00 CDT

Scheduled - Dear Valued Customers,

We are excited to announce the release of ONESOURCE Determination – Configuration API Version 2026.06 in the UAT and Production environments in the AMERS region. The release will take place on

- UAT – October 13th, 2026, at 05:00 AM EST.
- PROD – October 21st, 2026, at 05:00 AM EST.

No downtime is expected during this deployment window.

To learn more about the impact please refer to the Release Schedule section of the Configuration APIs release notes.

Thank you for your continued support, and we look forward to providing you with the best possible tax compliance solutions.

Warmest regards,
ONESOURCE Indirect Tax Product Management
Oct 19, 02:23 CDT

ONESOURCE Determination Enterprise Cloud – Version 2026.06 Release Information (UAT EMEA environment)

Completed - The scheduled maintenance has been completed.
Oct 21, 08:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 21, 04:00 CDT

Scheduled - ONESOURCE Determination Enterprise Cloud – Version 2026.06 is being deployed in the UAT EMEA environment on October 21, 2026. Your access to the tax calculation services and the application will not be interrupted.
Oct 14, 03:51 CDT

OSPI Platform – UAT Minor release for October 2026

Completed - The scheduled maintenance has been completed.
Oct 21, 06:01 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 21, 00:00 CDT

Scheduled - ONESOURCE Platform will be performing scheduled maintenance on our systems to ensure optimal performance and reliability. During this maintenance window, certain services, including authentication and administration, might experience degraded performance. In such cases, we recommend trying after some time. We apologize for any inconvenience this may cause and appreciate your patience and understanding. If you have any urgent inquiries or require assistance during the maintenance period, please contact our support team. Thank you for your cooperation.
Sep 29, 10:01 CDT

ONESOURCE Tax Information Release OTIR Release 26.04 20th October 2026 (AMERS)

Completed - The scheduled maintenance has been completed.
Oct 21, 06:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 20, 19:00 CDT

Scheduled - ONESOURCE Tax Information Reporting Release 26.04 will be installed from 7:00 P.M. (CT) on  20th October 2026 until 06:00 A.M. (CT) on 21st October 2026. System availability and API's may be affected during release time.
Nov 20, 05:35 CST

Oct `20`, `2026`

ONESOURCE Corporate Tax - United Kingdom - Template Release Announcement

Completed - The scheduled maintenance has been completed.
Oct 20, 23:30 CDT

Scheduled - The updated FY26 template will be available from 21st October 2026.

- United Kingdom Partnership Tax v1.526

This update does not warrant any downtime.
Oct 16, 05:27 CDT

ONESOURCE IDT Determination Enterprise Cloud – Scheduled Maintenance Notification (PROD AMER environment)

Completed - The scheduled maintenance has been completed.
Oct 20, 00:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 19, 22:01 CDT

Scheduled - ONESOURCE IDT Determination Enterprise Cloud will undergo scheduled maintenance in the PROD AMER environment from 10:00 PM CDT on October 19 to 12:00 AM CDT on October 20, 2026. A brief UI disruption of approximately 10–15 minutes is expected, affecting UI system functionality and user experience; the Calc engine will remain operational.
Sep 29, 11:03 CDT

Oct `19`, `2026`

ONESOURCE IDT Determination Enterprise Cloud – Scheduled Maintenance Notification (PROD EMEA environment)

Completed - The scheduled maintenance has been completed.
Oct 19, 22:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 19, 20:00 CDT

Scheduled - ONESOURCE IDT Determination Enterprise Cloud will undergo scheduled maintenance in the PROD EMEA environment on October 19, 2026, from 8:00 PM to 10:00 PM CDT. A brief UI disruption of approximately 10–15 minutes is expected, affecting UI system functionality and user experience; the Calc engine will remain operational.
Sep 29, 11:02 CDT

ONESOURCE Workpapers Maintenance [EMEA]

Completed - The scheduled maintenance has been completed.
Oct 19, 22:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 19, 15:00 CDT

Scheduled - ONESOURCE Workpapers will be unavailable from Oct 19, 2026, 3:00 P.M. (CT) until Oct 19, 2026 10:00 P.M. (CT) for scheduled maintenance.
Oct 19, 10:30 CDT

ONESOURCE Determination – Configuration API Version 2026.06 Release Information (MENA Region)

Completed - The scheduled maintenance has been completed.
Oct 19, 14:01 CDT

Scheduled - Dear Valued Customers,

We are excited to announce the release of ONESOURCE Determination – Configuration API Version 2026.06 in the UAT and Production environments in the MENA region. The release will take place on

- UAT – October 12th, 2026, at 10:00 AM EST.
- PROD – October 19th, 2026, at 10:00 AM EST.

No downtime is expected during this deployment window.

To learn more about the impact please refer to the Release Schedule section of the Configuration APIs release notes.

Thank you for your continued support, and we look forward to providing you with the best possible tax compliance solutions.

Warmest regards,
ONESOURCE Indirect Tax Product Management
Oct 19, 02:43 CDT

ONESOURCE Determination – Configuration API Version 2026.06 - Production Release Information (MENA Region)

Completed - The scheduled maintenance has been completed.
Oct 19, 14:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 19, 09:00 CDT

Scheduled - ONESOURCE Determination – Configuration API Version 2026.06 is being deployed in the MENA Production environment. No downtime is expected during this deployment window.
Oct 19, 02:43 CDT

ONESOURCE Determination – Configuration API Version 2026.06 Release Information (EMEA Region)

Completed - The scheduled maintenance has been completed.
Oct 19, 09:01 CDT

Scheduled - Dear Valued Customers,

We are excited to announce the release of ONESOURCE Determination – Configuration API Version 2026.06 in the UAT and Production environments in the EMEA region. The release will take place on

- UAT – October 12th, 2026, at 05:00 AM EST.
- PROD – October 19th, 2026, at 05:00 AM EST.

No downtime is expected during this deployment window.

To learn more about the impact please refer to the Release Schedule section of the Configuration APIs release notes.

Thank you for your continued support, and we look forward to providing you with the best possible tax compliance solutions.

Warmest regards,
ONESOURCE Indirect Tax Product Management
Oct 19, 02:41 CDT

ONESOURCE Determination – Configuration API Version 2026.06 - Production Release Information (EMEA Region)

Completed - The scheduled maintenance has been completed.
Oct 19, 09:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 19, 04:01 CDT

Scheduled - ONESOURCE Determination – Configuration API Version 2026.06 is being deployed in the EMEA Production environment. No downtime is expected during this deployment window.
Oct 19, 02:41 CDT

ONESOURCE Determination Enterprise Cloud – Version 2026.05.08 Patch Information (PROD environments)

Completed - The scheduled maintenance has been completed.
Oct 19, 07:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 19, 04:00 CDT

Scheduled - ONESOURCE Determination Enterprise Cloud – Version 2026.05.08 patch is being applied in the PROD environments (EMEA, MENA, and AMER) on October 19, 2026, at 4:00 AM CDT. This patch resolves an Oil & Gas issue where Data File Integrator (DFI) of Operating Licenses failed because the Destination Seller License field was enforced as required; it is now correctly optional. Your access to the tax calculation services and the application will not be interrupted.
Oct 16, 03:04 CDT

Oct `18`, `2026`

ONESOURCE GTM4 – Maintenance

Completed - The scheduled maintenance has been completed.
Oct 18, 17:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 18, 00:00 CDT

Scheduled - Thomson Reuters will be performing scheduled maintenance on Sunday, October 18th, 2026 beginning at 1 AM Eastern time and will conclude by Sunday, October 18th, 2026 at 6 PM Eastern time.

The maintenance will include updates and patches to implementation and production environments. During this maintenance there will be intermittent downtime, and you will not be able to access implementation and production instances.

If you have any questions or concerns, please contact Customer Support.
Sep 23, 05:37 CDT

Oct `17`, `2026`

ONESOURCE Pagero E-Invoicing Integration for Oracle Fusion CMK release version 2.3.1.0 October 15th, 2026

Completed - The scheduled maintenance has been completed.
Oct 17, 12:30 CDT

Scheduled - Hello,

This is to notify you that ONESOURCE E-Invoicing Oracle Fusion(CMK) R2.3.1.0 package is released successfully and is now available to download from the Customer Center.

Thank You,
ONESOURCE E-Invoicing Oracle CMK Team
Oct 16, 03:01 CDT

Oct `16`, `2026`

ONESOURCE Oracle Fusion Rate to Regime Content release for AEM OCTOBER 2026

Completed - The scheduled maintenance has been completed.
Oct 16, 09:15 CDT

Scheduled - ONESOURCE Oracle Fusion Rate to Regime Content release Content for AEM region for OCTOBER 2026 has been released. It is available in Integration UI for download. Please note that there are no incremental content files for October 2026.
Oct 8, 07:24 CDT

ONESOURCE Oracle Fusion Rate to Regime Content release for BRAZIL SEPTEMBER 2026

Completed - The scheduled maintenance has been completed.
Oct 16, 09:15 CDT

Scheduled - ONESOURCE Oracle Fusion Rate to Regime Content release Content for INDIA region for SEPTEMBER 2026 has been released. It is available in Integration UI for download. Please note that there will be no incremental file for September 2026.
Oct 8, 09:06 CDT

ONESOURCE Determination Enterprise Cloud – Version 2026.05.08 Patch Information (UAT environments)

Completed - The scheduled maintenance has been completed.
Oct 16, 07:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 16, 04:00 CDT

Scheduled - ONESOURCE Determination Enterprise Cloud – Version 2026.05.08 patch is being applied in the UAT environments (EMEA, MENA, and AMER) on October 16, 2026, at 4:00 AM CDT. This patch resolves an Oil & Gas issue where Data File Integrator (DFI) of Operating Licenses failed because the Destination Seller License field was enforced as required; it is now correctly optional. Your access to the tax calculation services and the application will not be interrupted.
Oct 16, 03:03 CDT

Oct `15`, `2026`

Onesource Global Trade - Validation Processing Offline

Resolved - This incident has been resolved.
Oct 15, 20:26 CDT

Monitoring - The issue has been resolved and we are continuing to monitor.
Oct 5, 14:43 CDT

Identified - Thomson Reuters is aware of an issue with the Global Trade Management system that is affecting multiple areas of the application, including but not limited to FIFO processing, saving shipments, running reports, etc. We are currently working on resolving this issue.
Oct 5, 13:53 CDT

Onesource Global Trade - Content Intermittent Issues

Resolved - This incident has been resolved.
Oct 15, 20:25 CDT

Monitoring - This issue has been mitigated, and we will continue to monitor.
Oct 5, 16:03 CDT

Investigating - Thomson Reuters is currently investigating an issue that is resulting in intermittent connection issues with the Global Trade Content solution. Clients may not be able to run HTS validations or any other type of validations at this time.
Oct 5, 15:00 CDT

Oct `14`, `2026`

ONESOURCE Tax Provision is unable

Resolved - This incident has been resolved.
Oct 14, 15:17 CDT

Investigating - We are currently experiencing an issue with our ONESOURCE Tax Provision service, which is temporarily unavailable. Our team is actively working to resolve this matter as quickly as possible. We apologize for any inconvenience and appreciate your understanding and patience.

Further updates will be provided here as soon as we have more information. If you have any questions, please contact Customer Support.
Oct 14, 15:11 CDT

ONESOURCE Fringe Benefits Tax

Completed - The scheduled maintenance has been completed.
Oct 14, 10:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 14, 06:00 CDT

Scheduled - ONESOURCE Fringe Benefits Tax will be unavailable from Wednesday 14th October 2026 22:00 AEDT to Thursday 15th October 2026 02:00 AEDT
Oct 12, 02:00 CDT

Delay in Data for reports and analytics service in AMER PROD

Resolved - The data catch-up is complete.
Oct 14, 04:01 CDT

Investigating - Reports and Analytics Service in AMER PROD is currently experiencing delay of around 6 hours 30 minutes . We are working on the data catch up. Will notify once complete.
Oct 13, 23:38 CDT

Oct `13`, `2026`

Delay in Data for reports and analytics service in AMER PROD

Resolved - This incident has been resolved.
Oct 13, 01:57 CDT

Investigating - Reports and Analytics Service in AMER PROD is currently experiencing delay of around 6 hours. We are working on the data catch up. Will notify once complete.
Oct 12, 19:49 CDT

Oct `12`, `2026`

Oct `11`, `2026`

No incidents reported.

Scheduled Maintenance

OSPI Platform – AMER Emergency deployment completed on October 23, 2026 Oct 23, 2026 12:30-13:30 CDT

OSPI Platform – APAC User Administration release for October 2026 Oct 26, 2026 05:00-11:00 CDT

OSPI Platform – EMEA User Administration release for October 2026 Oct 26, 2026 13:00-19:00 CDT

OSPI Platform – AMER User Administration release for October 2026 Oct 27, 2026 00:00-06:00 CDT

ONESOURCE API Administration Backend Services and UI Oct 2026 release in UAT Oct 28, 2026 22:00 - Oct 29, 2026 03:00 CDT

ONESOURCE API Administration - Security Certificate Renewal in UAT Oct 29, 2026 00:00-06:00 CDT

ONESOURCE Determination (Enterprise Cloud and Determination Anywhere) – Urgent Platform Maintenance Notification (UAT environment) Oct 29, 2026 00:00-06:00 CDT

OSPI Platform – UAT Major release for October 2026 Oct 29, 2026 00:00-09:00 CDT

ONESOURCE API Administration Backend Services Oct 2026 release in all Production regions Oct 29, 2026 01:00-06:00 CDT

ONESOURCE API Administration UI Oct 2026 release – APAC Oct 29, 2026 07:00-12:00 CDT

ONESOURCE API Administration UI Oct 2026 release – EMEA Oct 29, 2026 16:00-21:00 CDT

ONESOURCE API Administration UI Oct 2026 release – AMER Oct 30, 2026 00:00-05:00 CDT

ONESOURCE API Administration - Security Certificate Renewal in APAC Oct 30, 2026 05:00-11:00 CDT

OSPI Platform – APAC Major release for October 2026 Oct 30, 2026 05:00-14:00 CDT

ONESOURCE Global Trade - AWS IP Address Change on October 31st Oct 30, 2026 08:00-12:00 CDT

OSPI Platform – EMEA Major release for October 2026 Oct 31, 2026 13:00-22:00 CDT

ONESOURCE Determination Enterprise Cloud – Urgent Platform Maintenance Notification (EMEA environment) Oct 31, 2026 13:00-19:00 CDT

ONESOURCE API Administration - Security Certificate Renewal in EMEA Oct 31, 2026 13:00-19:00 CDT

OSPI Platform – AMER Major release for October 2026 Nov 1, 2026 00:00-08:00 CST

ONESOURCE Determination (Enterprise Cloud and Determination Anywhere) – Urgent Platform Maintenance Notification (AMER environment) Nov 1, 2026 00:00-05:00 CST

ONESOURCE API Administration - Security Certificate Renewal in AMER Nov 1, 2026 00:00-05:00 CST

ONESOURCE Events Backend Services October 2026 release in APAC Nov 3, 2026 07:00-12:00 CST

ONESOURCE Events Backend Services October 2026 release in EMEA Nov 3, 2026 16:00-21:00 CST

ONESOURCE Events Backend Services October 2026 release in AMER Nov 4, 2026 00:00-05:00 CST

APAC - Classic ONESOURCE Workflow Manager suite of products - Security Maintenance Application server patching for October 2026. Nov 7, 2026 07:00-11:00 CST

EMEA - Classic ONESOURCE Workflow Manager suite of products - Security Maintenance Application server patching for October 2026. Nov 7, 2026 18:00-22:00 CST

ONESOURCE GTM4 – Maintenance Nov 8, 2026 00:00-17:00 CST

AMER - Classic ONESOURCE Workflow Manager suite of products - Security Maintenance Application server patching for October 2026. Nov 8, 2026 00:00-04:00 CST

ONESOURCE GTM4 – Maintenance Nov 8, 2026 00:00-17:00 CST

ONESOURCE Determination Enterprise Cloud – Version 2026.06 Release Information (PROD EMEA environment) Nov 10, 2026 04:00-08:00 CST

ONESOURCE Determination Enterprise Cloud – Version 2026.06 Release Information (PROD MENA environment) Nov 10, 2026 08:00-12:00 CST

ONESOURCE Determination Anywhere – Version 2026.06 Release Information (PROD MENA environment) Nov 10, 2026 10:00-16:00 CST

ONESOURCE Determination Enterprise Cloud – Version 2026.06 Release Information (PROD AMER environment) Nov 19, 2026 04:00-10:00 CST

ONESOURCE Determination Anywhere – Version 2026.06 Release Information (PROD AMER environment) Nov 19, 2026 06:00-12:00 CST

ONESOURCE Tax Information Reporting System Maintenance 21st November 2026 (AMERS) Nov 21, 2026 22:00 - Nov 22, 2026 07:00 CST

ONESOURCE GTM4 – Maintenance Nov 22, 2026 00:00-17:00 CST

ONESOURCE GTM4 – Maintenance Nov 22, 2026 00:00-17:00 CST

ONESOURCE Tax Information Release OTIR Release 26.05 1st December 2026 (AMERS) Dec 1, 2026 19:00 - Dec 2, 2026 06:00 CST

ONESOURCE GTM4 – Maintenance Dec 6, 2026 00:00-17:00 CST

ONESOURCE GTM4 – Maintenance Dec 20, 2026 00:00-17:00 CST

ONESOURCE Tax Information Release OTIR Release 26.06 22nd December 2026 (AMERS) Dec 22, 2026 19:00 - Dec 23, 2026 06:00 CST

ONESOURCE Tax Information Reporting System Maintenance 26th December 2026 (AMERS) Dec 26, 2026 22:00 - Dec 27, 2026 07:00 CST

ONESOURCE GTM4 – Maintenance Jan 3, 2027 00:00-17:00 CST

ONESOURCE GTM4 – Maintenance Jan 17, 2027 00:00-17:00 CST

ONESOURCE GTM4 – Maintenance Feb 7, 2027 00:00-17:00 CST

ONESOURCE Tax Information Release OTIR Release 26.07 16th February 2027 (AMERS) Feb 16, 2027 19:00 - Feb 17, 2027 06:00 CST

ONESOURCE GTM4 – Maintenance Feb 21, 2027 00:00-17:00 CST

ONESOURCE GTM4 – Maintenance Mar 7, 2027 00:00-17:00 CST

ONESOURCE GTM4 – Maintenance Mar 21, 2027 00:00-17:00 CDT

ONESOURCE GTM4 – Maintenance Apr 4, 2027 00:00-17:00 CDT

Past Incidents

Oct 25, 2026

Oct 24, 2026

Oct 23, 2026

Oct 22, 2026

Oct 21, 2026

Oct 20, 2026

Oct 19, 2026

Oct 18, 2026

Oct 17, 2026

Oct 16, 2026

Oct 15, 2026

Oct 14, 2026

Oct 13, 2026

Oct 12, 2026

Oct 11, 2026

OSPI Platform – AMER Emergency deployment completed on October 23, 2026 Oct `23`, `2026` `12:30`-`13:30` CDT

OSPI Platform – APAC User Administration release for October 2026 Oct `26`, `2026` `05:00`-`11:00` CDT

OSPI Platform – EMEA User Administration release for October 2026 Oct `26`, `2026` `13:00`-`19:00` CDT

OSPI Platform – AMER User Administration release for October 2026 Oct `27`, `2026` `00:00`-`06:00` CDT

ONESOURCE API Administration Backend Services and UI Oct 2026 release in UAT Oct `28`, `2026` `22:00` - Oct `29`, `2026` `03:00` CDT

ONESOURCE API Administration - Security Certificate Renewal in UAT Oct `29`, `2026` `00:00`-`06:00` CDT

ONESOURCE Determination (Enterprise Cloud and Determination Anywhere) – Urgent Platform Maintenance Notification (UAT environment) Oct `29`, `2026` `00:00`-`06:00` CDT

OSPI Platform – UAT Major release for October 2026 Oct `29`, `2026` `00:00`-`09:00` CDT

ONESOURCE API Administration Backend Services Oct 2026 release in all Production regions Oct `29`, `2026` `01:00`-`06:00` CDT

ONESOURCE API Administration UI Oct 2026 release – APAC Oct `29`, `2026` `07:00`-`12:00` CDT

ONESOURCE API Administration UI Oct 2026 release – EMEA Oct `29`, `2026` `16:00`-`21:00` CDT

ONESOURCE API Administration UI Oct 2026 release – AMER Oct `30`, `2026` `00:00`-`05:00` CDT

ONESOURCE API Administration - Security Certificate Renewal in APAC Oct `30`, `2026` `05:00`-`11:00` CDT

OSPI Platform – APAC Major release for October 2026 Oct `30`, `2026` `05:00`-`14:00` CDT

ONESOURCE Global Trade - AWS IP Address Change on October 31st Oct `30`, `2026` `08:00`-`12:00` CDT

OSPI Platform – EMEA Major release for October 2026 Oct `31`, `2026` `13:00`-`22:00` CDT

ONESOURCE Determination Enterprise Cloud – Urgent Platform Maintenance Notification (EMEA environment) Oct `31`, `2026` `13:00`-`19:00` CDT

ONESOURCE API Administration - Security Certificate Renewal in EMEA Oct `31`, `2026` `13:00`-`19:00` CDT

OSPI Platform – AMER Major release for October 2026 Nov `1`, `2026` `00:00`-`08:00` CST

ONESOURCE Determination (Enterprise Cloud and Determination Anywhere) – Urgent Platform Maintenance Notification (AMER environment) Nov `1`, `2026` `00:00`-`05:00` CST

ONESOURCE API Administration - Security Certificate Renewal in AMER Nov `1`, `2026` `00:00`-`05:00` CST

ONESOURCE Events Backend Services October 2026 release in APAC Nov `3`, `2026` `07:00`-`12:00` CST

ONESOURCE Events Backend Services October 2026 release in EMEA Nov `3`, `2026` `16:00`-`21:00` CST

ONESOURCE Events Backend Services October 2026 release in AMER Nov `4`, `2026` `00:00`-`05:00` CST

APAC - Classic ONESOURCE Workflow Manager suite of products - Security Maintenance Application server patching for October 2026. Nov `7`, `2026` `07:00`-`11:00` CST

EMEA - Classic ONESOURCE Workflow Manager suite of products - Security Maintenance Application server patching for October 2026. Nov `7`, `2026` `18:00`-`22:00` CST

ONESOURCE GTM4 – Maintenance Nov `8`, `2026` `00:00`-`17:00` CST

AMER - Classic ONESOURCE Workflow Manager suite of products - Security Maintenance Application server patching for October 2026. Nov `8`, `2026` `00:00`-`04:00` CST

ONESOURCE GTM4 – Maintenance Nov `8`, `2026` `00:00`-`17:00` CST

ONESOURCE Determination Enterprise Cloud – Version 2026.06 Release Information (PROD EMEA environment) Nov `10`, `2026` `04:00`-`08:00` CST

ONESOURCE Determination Enterprise Cloud – Version 2026.06 Release Information (PROD MENA environment) Nov `10`, `2026` `08:00`-`12:00` CST

ONESOURCE Determination Anywhere – Version 2026.06 Release Information (PROD MENA environment) Nov `10`, `2026` `10:00`-`16:00` CST

ONESOURCE Determination Enterprise Cloud – Version 2026.06 Release Information (PROD AMER environment) Nov `19`, `2026` `04:00`-`10:00` CST

ONESOURCE Determination Anywhere – Version 2026.06 Release Information (PROD AMER environment) Nov `19`, `2026` `06:00`-`12:00` CST

ONESOURCE Tax Information Reporting System Maintenance 21st November 2026 (AMERS) Nov `21`, `2026` `22:00` - Nov `22`, `2026` `07:00` CST

ONESOURCE GTM4 – Maintenance Nov `22`, `2026` `00:00`-`17:00` CST

ONESOURCE GTM4 – Maintenance Nov `22`, `2026` `00:00`-`17:00` CST

ONESOURCE Tax Information Release OTIR Release 26.05 1st December 2026 (AMERS) Dec `1`, `2026` `19:00` - Dec `2`, `2026` `06:00` CST

ONESOURCE GTM4 – Maintenance Dec `6`, `2026` `00:00`-`17:00` CST

ONESOURCE GTM4 – Maintenance Dec `20`, `2026` `00:00`-`17:00` CST

ONESOURCE Tax Information Release OTIR Release 26.06 22nd December 2026 (AMERS) Dec `22`, `2026` `19:00` - Dec `23`, `2026` `06:00` CST

ONESOURCE Tax Information Reporting System Maintenance 26th December 2026 (AMERS) Dec `26`, `2026` `22:00` - Dec `27`, `2026` `07:00` CST

ONESOURCE GTM4 – Maintenance Jan `3`, `2027` `00:00`-`17:00` CST

ONESOURCE GTM4 – Maintenance Jan `17`, `2027` `00:00`-`17:00` CST

ONESOURCE GTM4 – Maintenance Feb `7`, `2027` `00:00`-`17:00` CST

ONESOURCE Tax Information Release OTIR Release 26.07 16th February 2027 (AMERS) Feb `16`, `2027` `19:00` - Feb `17`, `2027` `06:00` CST

ONESOURCE GTM4 – Maintenance Feb `21`, `2027` `00:00`-`17:00` CST

ONESOURCE GTM4 – Maintenance Mar `7`, `2027` `00:00`-`17:00` CST

ONESOURCE GTM4 – Maintenance Mar `21`, `2027` `00:00`-`17:00` CDT

ONESOURCE GTM4 – Maintenance Apr `4`, `2027` `00:00`-`17:00` CDT

Oct `25`, `2026`

Oct `24`, `2026`

Oct `23`, `2026`

Oct `22`, `2026`

Oct `21`, `2026`

Oct `20`, `2026`

Oct `19`, `2026`

Oct `18`, `2026`

Oct `17`, `2026`

Oct `16`, `2026`

Oct `15`, `2026`

Oct `14`, `2026`

Oct `13`, `2026`

Oct `12`, `2026`

Oct `11`, `2026`