Thomson Reuters Corporates Status

All Systems Operational

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 Operational

AMERS (onesourcetax.com) Operational

AMERS (onesourcelogin.com) Operational

AMERS Administration Operational

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 Operational

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 Operational

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 Operational

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 Operational

ONESOURCE Determination Enterprise Cloud (AWS AMER) Operational

ONESOURCE Determination Enterprise Cloud (AWS EMEA) Operational

ONESOURCE Determination Enterprise Cloud (OCI AMER) Operational

ONESOURCE Determination Enterprise Cloud (OCI MENA) Operational

ONESOURCE Determination Anywhere (AWS AMER) Operational

ONESOURCE Determination Anywhere (OCI AMER) Operational

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 Operational

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 365FOE 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 - 1.x Operational

Oracle Fusion Tax Cloud - 2.x Operational

Salesforce Subscription Management Operational

SAP 5.2B Basic (RFC) Operational

SAP Ariba - Cloud Operational

SAP Ariba - OnPremise Operational

SAP Ariba - Original cloud Operational

SAP Business One Operational

SAP C4/HANA Commerce Cloud Operational

SAP Global Next Operational

SAP Global Tax Service Operational

SAP US Tax S4/HANA Cloud Operational

Trust & Info Rptg Operational

AMERS NRA - FNIS & Users Website Operational

AMERS Tax Information Reporting Operational

AMERS Trust Tax Operational

AMERS Trust Tax Insight Operational

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

ONESOURCE Oracle Fusion Rate to Regime Content release for LATAM JUNE 2026 Jun `16`, `2026` `12:30` - Jun `17`, `2026` `12:30` CDT

ONESOURCE Oracle Fusion Rate to Regime Content release Content for LATAM region for JUNE 2026 has been released. It is available in Integration UI for download.
Posted on Jun 16, 2026 - 03:50 CDT

ONESOURCE Tax Provision Maintenance EMEA Jun `18`, `2026` `15:00`-`17:00` CDT

ONESOURCE Tax Provision will be undergoing release and maintenance activities on June 18, 2026.
Posted on Jun 16, 2026 - 14:11 CDT

ONESOURCE Corporate Tax [EMEA] - Release Update Jun `18`, `2026` `17:30`-`23:30` CDT

Following the recent release update, a targeted minor release addressing a subset of planned changes to support immediate customer needs will now be deployed.

ONESOURCE Corporate Tax will be unavailable during the following period:
Thursday June 18th, 23:30 BST to Friday June 19th, 05:30 BST

This update delivers selected improvements ahead of the full release, which will be scheduled separately.
Posted on Jun 16, 2026 - 05:12 CDT

ONESOURCE Tax Provision Maintenance AMERS Jun `18`, `2026` `23:00` - Jun `19`, `2026` `02:00` CDT

ONESOURCE Tax Provision will be undergoing release and maintenance activities on June 18-19, 2026.
Posted on Jun 16, 2026 - 14:12 CDT

OSPI Platform – UAT User Administration Minor release for June 2026 Jun `19`, `2026` `00:00`-`06:00` 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 Jun 04, 2026 - 10:24 CDT

ONESOURCE Trusts [APAC] - Release Update Jun `19`, `2026` `10:30`-`16:30` CDT

Following the recent release update, a targeted minor release addressing a subset of planned changes to support immediate customer needs will now be deployed.

ONESOURCE Trusts will be unavailable during the following period:
Saturday June 20th, 01:30 AEST to 07:30 AEST

This update delivers selected improvements ahead of the full release, which will be scheduled separately.
Posted on Jun 16, 2026 - 05:14 CDT

ONESOURCE Corporate Tax [APAC] - Release Update Jun `19`, `2026` `10:30`-`16:30` CDT

Following the recent release update, a targeted minor release addressing a subset of planned changes to support immediate customer needs will now be deployed.

ONESOURCE Corporate Tax will be unavailable during the following period:
Saturday June 20th, 01:30 AEST to 07:30 AEST

This update delivers selected improvements ahead of the full release, which will be scheduled separately.
Posted on Jun 16, 2026 - 05:13 CDT

ONESOURCE Tax Provision Maintenance Jun `19`, `2026` `18:00` - Jun `21`, `2026` `09:30` CDT

ONESOURCE Tax Provision will be undergoing server maintenance on June 19-21, 2026.
Posted on Jun 16, 2026 - 12:16 CDT

Abacus EMEA OCT and OAP Citrix servers security patching Jun `19`, `2026` `19:00`-`23:00` CDT

Abacus EMEA OCT and OAP Citrix servers will be undergoing scheduled maintenance from Saturday 20th June 05:30 IST to Saturday 20th June 09:30 IST.
Posted on Jun 16, 2026 - 05:53 CDT

ONESOURCE Income Tax Maintenance Jun `19`, `2026` `20:00` - Jun `20`, `2026` `02:00` CDT

ONESOURCE Income Tax will be undergoing maintenance Friday, June 19 8:00pm – Saturday, June 20 2:00am CT.
Posted on Jun 08, 2026 - 14:59 CDT

ONESOURCE Determination Enterprise Cloud — Emergency Database Maintenance (AMER PROD) Jun `20`, `2026` `02:00`-`14:00` CDT

We're performing emergency database maintenance on ONESOURCE Determination Enterprise Cloud (AMER Production) on June 20, 2026. The user interface and sign-in will be unavailable from 2:00 AM to 4:30 AM CDT. Tax calculations through the APIs will continue to work normally — only the user interface is affected.
Posted on Jun 05, 2026 - 03:25 CDT

AMER - ONESOURCE Platform Emergency Database Maintenance - June 2026. Jun `20`, `2026` `02:00`-`14:00` CDT

ONESOURCE Platform will be undergoing emergency maintenance in AMER on Saturday June 20, 02:00 AM CDT - 02:00 PM CDT.
ONESOURCE Platform will be unavailable from Saturday June 20, 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.
Posted on Jun 02, 2026 - 10:48 CDT

ONESOURCE GTM – AWS Maintenance Jun `21`, `2026` `00:00`-`17:00` CDT

Thomson Reuters will be performing scheduled maintenance on Sunday, June 21th, 2026 beginning at 1 AM Eastern time and will conclude by Sunday, June 21th, 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 Feb 25, 2026 - 12:44 CST

OSPI Platform – APAC User Administration Minor release for June 2026 Jun `22`, `2026` `05:00`-`11:00` CDT

OSPI Platform – EMEA User Administration Minor release for June 2026 Jun `22`, `2026` `13:00`-`19:00` CDT

ONESOURCE Data Query Maintenance Jun `22`, `2026` `19:00`-`22:00` CDT

ONESOURCE Data Query will be undergoing maintenance on Monday, June 22nd between 7:00pm – 10:00pm CT.
Posted on Jun 17, 2026 - 14:52 CDT

OSPI Platform – AMER User Administration Minor release for June 2026 Jun `23`, `2026` `00:00`-`06:00` CDT

ONESOURCE Income Tax Maintenance Jun `23`, `2026` `00:00`-`01:30` CDT

ONESOURCE Income Tax will be undergoing maintenance on Tuesday, June 23rd between 12:00am – 1:30am CT.
Posted on Jun 17, 2026 - 14:52 CDT

OSPI Platform – UAT Major release for June 2026 Jun `25`, `2026` `00:00`-`06:00` 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 Jun 05, 2026 - 04:42 CDT

OSPI Platform – APAC Major release for June 2026 Jun `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 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 Jun 05, 2026 - 04:42 CDT

OSPI Platform – EMEA Major release for June 2026 Jun `26`, `2026` `13:00`-`19:00` 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 Jun 05, 2026 - 04:43 CDT

ONESOURCE Tax Provision Next Gen Maintenance Jun `26`, `2026` `18:00` - Jun `27`, `2026` `06:00` CDT

ONESOURCE Tax Provision Next Gen - AMERS will be undergoing maintenance on Friday, June 26th 6pm – Saturday, June 27th 6am CT. ONESOURCE Tax Provision Next Gen - AMERS will be unavailable during this time.
Posted on May 29, 2026 - 10:58 CDT

GoSystem Tax RS Maintenance Jun `26`, `2026` `18:00` - Jun `27`, `2026` `06:00` CDT

GoSystem Tax RS will be undergoing maintenance on Friday, June 26th 6pm – Saturday, June 27th 6am CT. GoSystem Tax RS will be unavailable during this time.
Posted on May 29, 2026 - 11:11 CDT

ONESOURCE Tax Provision Next Gen Maintenance Jun `26`, `2026` `18:00` - Jun `27`, `2026` `06:00` CDT

ONESOURCE Tax Provision Next Gen - EMEA will be undergoing maintenance on Friday, June 26th 6pm – Saturday, June 27th 6am CT. ONESOURCE Tax Provision Next Gen - EMEA will be unavailable during this time.
Posted on May 29, 2026 - 10:58 CDT

ONESOURCE Income Tax Maintenance Jun `26`, `2026` `18:00` - Jun `27`, `2026` `06:00` CDT

ONESOURCE Income Tax will be undergoing maintenance on Friday, June 26th 6pm – Saturday, June 27th 6am CT. ONESOURCE Income Tax will be unavailable during this time.
Posted on May 29, 2026 - 10:59 CDT

ONESOURCE Tax Provision Maintenance Jun `26`, `2026` `18:00` - Jun `27`, `2026` `06:00` CDT

ONESOURCE Tax Provision - AMERS will be undergoing maintenance on Friday, June 26th 6pm – Saturday, June 27th 6am CT. ONESOURCE Tax Provision - AMERS will be unavailable during this time.
Posted on May 29, 2026 - 10:58 CDT

ONESOURCE Trust Tax Maintenance Jun `26`, `2026` `18:00` - Jun `27`, `2026` `06:00` CDT

ONESOURCE Trust Tax will be undergoing maintenance on Friday, June 26th 6pm – Saturday, June 27th 6am CT. ONESOURCE Trust Tax will be unavailable during this time.
Posted on May 29, 2026 - 11:04 CDT

ONESOURCE General Ledger Manager Maintenance Jun `26`, `2026` `18:00` - Jun `27`, `2026` `06:00` CDT

ONESOURCE General Ledger Manager will be undergoing maintenance Friday, June 26th 6pm – Saturday, June 27th 6am CT. ONESOURCE General Ledger Manager will be unavailable during this time.
Posted on May 29, 2026 - 11:11 CDT

ONESOURCE Sales & Use Tax Compliance Maintenance Jun `26`, `2026` `18:00` - Jun `27`, `2026` `06:00` CDT

ONESOURCE Sales & Use Tax Compliance will be undergoing maintenance on Friday, June 26th 6pm – Saturday, June 27th 6am CT. ONESOURCE Sales & Use Tax Compliance will be unavailable during this time.
Posted on May 29, 2026 - 11:05 CDT

ONESOURCE Workpapers Maintenance Jun `26`, `2026` `18:00` - Jun `27`, `2026` `06:00` CDT

ONESOURCE Workpapers will be undergoing maintenance Friday, June 26th 6pm – Saturday, June 27th 6am CT. ONESOURCE Workpapers will be unavailable during this time.
Posted on May 29, 2026 - 11:11 CDT

ONESOURCE DataFlow NextGen Maintenance Jun `26`, `2026` `18:00` - Jun `27`, `2026` `06:00` CDT

ONESOURCE DataFlow NextGen will be undergoing maintenance on Friday, June 26th 6pm – Saturday, June 27th 6am CT. ONESOURCE DataFlow NextGen will be unavailable during this time.
Posted on May 29, 2026 - 11:11 CDT

ONESOURCE Income Tax Workpapers Maintenance Jun `26`, `2026` `18:00` - Jun `27`, `2026` `06:00` CDT

ONESOURCE Income Tax Workpapers will be undergoing maintenance on Friday, June 26th 6pm – Saturday, June 27th 6am CT. ONESOURCE Income Tax Workpapers will be unavailable during this time.
Posted on May 29, 2026 - 11:11 CDT

ONESOURCE State Apportionment Maintenance Jun `26`, `2026` `18:00` - Jun `27`, `2026` `06:00` CDT

ONESOURCE State Apportionment will be undergoing maintenance on Friday, June 26th 6pm – Saturday, June 27th 6am CT. ONESOURCE State Apportionment will be unavailable during this time.
Posted on May 29, 2026 - 11:05 CDT

ONESOURCE Tax Information Reporting Maintenance Jun `27`, `2026` `22:00` - Jun `28`, `2026` `07:00` CDT

ONESOURCE Tax Information Reporting will be undergoing maintenance on Saturday, June 27th 10pm – Sunday, June 28th 7am CT. ONESOURCE Tax Information Reporting will be unavailable during this time.
Posted on May 29, 2026 - 11:04 CDT

ONESOURCE Tax Information Reporting System Maintenance 27th June 2026 (AMERS) Jun `27`, `2026` `22:00` - Jun `28`, `2026` `07:00` CDT

ONESOURCE Tax Information Reporting and API's will be unavailable from 10:00 P.M. (CT) on 27th June 2026 until 07:00 A.M. (CT) on 28th June  2026 for scheduled maintenance.
Posted on Nov 20, 2025 - 05:46 CST

OSPI Platform – AMER Major release for June 2026 Jun `29`, `2026` `00:00`-`06:00` 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 Jun 05, 2026 - 04:44 CDT

End of Life Notice: ONESOURCE Determination Original – Service Retirement on July 01, 2026 Jun `30`, `2026` `23:00` - Jul `1`, `2026` `00:00` CDT

ONESOURCE Determination Original will reach End of Life on July 01, 2026, at 12:01 AM ET. Tax calculation requests and UI access will be disabled at that time. Reporting access remains available through August 31, 2026.

For full details and next steps, visit our Help & Support article: Determination Original end of life

If you have questions, please contact your Account Manager or Customer Success Manager.
Posted on Jun 10, 2026 - 15:43 CDT

ONESOURCE Statutory Reporting - Web [AMERS] Jul `2`, `2026` `21:30`-`22:30` CDT

Update - ONESOURCE Statutory Reporting - Web [AMERS] will be undergoing scheduled maintenance during June 2, 2026 22:30 EDT to June 2, 2026 23:30 EDT.
May 27, 2026 - 04:07 CDT

Scheduled - ONESOURCE Statutory Reporting - Web [AMERS] will be undergoing scheduled maintenance during June 1, 2026 22:30 EDT to June 1, 2026 23:30 EDT.
May 25, 2026 - 11:37 CDT

ONESOURCE GTM – AWS Maintenance Jul `5`, `2026` `00:00`-`17:00` CDT

Thomson Reuters will be performing scheduled maintenance on Sunday, July 5th, 2026 beginning at 1 AM Eastern time and will conclude by Sunday, July 5th, 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 Feb 25, 2026 - 12:44 CST

ONESOURCE GTM – AWS Maintenance Jul `19`, `2026` `00:00`-`17:00` CDT

Thomson Reuters will be performing scheduled maintenance on Sunday, July 19th, 2026 beginning at 1 AM Eastern time and will conclude by Sunday, July 19th, 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 Feb 25, 2026 - 12:44 CST

ONESOURCE Tax Information Reporting System Maintenance 25th July 2026 (AMERS) Jul `25`, `2026` `22:00` - Jul `26`, `2026` `07:00` CDT

ONESOURCE Tax Information Reporting and API's will be unavailable from 10:00 P.M. (CT) on 25th July 2026 until 07:00 A.M. (CT) on 26th July 2026 for scheduled maintenance.
Posted on Nov 20, 2025 - 05:32 CST

ONESOURCE GTM – AWS Maintenance Aug `9`, `2026` `00:00`-`17:00` CDT

Thomson Reuters will be performing scheduled maintenance on Sunday, Aug 9th, 2026 beginning at 1 AM Eastern time and will conclude by Sunday, Aug 9th, 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 Feb 25, 2026 - 12:44 CST

ONESOURCE Tax Information Release OTIR Release 26.03 11th August 2026 (AMERS) Aug `11`, `2026` `19:00` - Aug `12`, `2026` `06:00` CDT

ONESOURCE Tax Information Reporting Release 26.03 will be installed from 7:00 P.M. (CT) on 11th August 2026 until 06:00 A.M. (CT) on 12th August 2026. System availability and API's may be affected during release time.
Posted on Nov 20, 2025 - 05:33 CST

2026 Disaster Recovery Testing for ONESOURCE Determination Enterprise Cloud (AWS EMEA) Aug `22`, `2026` `00:00`-`06:00` CDT

Disaster Recovery testing between 12:01 AM CDT and 6 AM CDT. No service interruption expected. Customers hosted in (AWS EMEA) region will continue to have full access to the ONESOURCE Determination tax calculation service and user interface during this DR testing window.
Posted on May 27, 2026 - 16:43 CDT

2026 Disaster Recovery Testing for ONESOURCE Determination Enterprise Cloud and Determination Anywhere (AWS AMER) Aug `22`, `2026` `00:00`-`06:00` CDT

Disaster Recovery testing between 12:01 AM CDT and 6 AM CDT. Customers hosted in (AWS AMER) region will continue to have full access to the ONESOURCE Determination tax calculation service. The Determination user interface is not available during this DR testing window.
Posted on May 27, 2026 - 16:42 CDT

ONESOURCE Tax Information Reporting System Maintenance 22nd August 2026 (AMERS) Aug `22`, `2026` `22:00` - Aug `23`, `2026` `07:00` CDT

ONESOURCE Tax Information Reporting and API's will be unavailable from 10:00 P.M. (CT) on 22nd August 2026 until 07:00 A.M. (CT) on 23rd August 2026 for scheduled maintenance.
Posted on Nov 20, 2025 - 05:34 CST

ONESOURCE GTM – AWS Maintenance Aug `23`, `2026` `00:00`-`17:00` CDT

Thomson Reuters will be performing scheduled maintenance on Sunday, Aug 23rd, 2026 beginning at 1 AM Eastern time and will conclude by Sunday, Aug 23rd, 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 Feb 25, 2026 - 12:45 CST

ONESOURCE GTM – AWS Maintenance Sep `6`, `2026` `00:00`-`17:00` CDT

Thomson Reuters will be performing scheduled maintenance on Sunday, Sep 6th, 2026 beginning at 1 AM Eastern time and will conclude by Sunday, Sep 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 Feb 25, 2026 - 12:45 CST

ONESOURCE GTM – AWS Maintenance Sep `20`, `2026` `00:00`-`17:00` CDT

Thomson Reuters will be performing scheduled maintenance on Sunday, Sep 20th, 2026 beginning at 1 AM Eastern time and will conclude by Sunday, Sep 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 Feb 25, 2026 - 12:45 CST

ONESOURCE Tax Information Release OTIR Release 26.04 20th October 2026 (AMERS) Oct `20`, `2026` `19:00` - Oct `21`, `2026` `06:00` CDT

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.
Posted on Nov 20, 2025 - 05:35 CST

Past Incidents

Jun 17, 2026

ONESOURCE Tax Information Release OTIR Release 26.02 16th June 2026 (AMERS)

Completed - The scheduled maintenance has been completed.
Jun 17, 06:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 16, 19:00 CDT

Scheduled - ONESOURCE Tax Information Reporting Release 26.02 will be installed from 7:00 P.M. (CT) on 16th June 2026 until 06:00 A.M. (CT) on 17th June 2026. System availability and API's may be affected during release time.
Nov 20, 05:26 CST

Jun 16, 2026

Delay in Data for reports and analytics service in AMER PROD

Resolved - Data catch up has been completed.
Jun 16, 20:57 CDT

Identified - Reports and Analytics Service in AMER PROD is currently experiencing delay of around 7 hours. We are working on the data catch up. Will notify once complete.
Jun 16, 15:19 CDT

OSPI Platform – AMER Emergency deployment in June 2026

Completed - The scheduled maintenance has been completed.
Jun 16, 15:45 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 16, 12:45 CDT

Scheduled - ONESOURCE Platform will be performing emergency maintenance on our systems to fix an issue in AMER. 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.
Jun 16, 11:25 CDT

OSPI Platform –EMEA Emergency deployment in June 2026

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

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 16, 12:15 CDT

Scheduled - ONESOURCE Platform will be performing emergency maintenance on our systems to fix an issue in EMEA. 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.
Jun 16, 11:25 CDT

OSPI Platform – APAC Emergency deployment in June 2026

Completed - The scheduled maintenance has been completed.
Jun 16, 14:45 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 16, 11:45 CDT

Scheduled - ONESOURCE Platform will be performing emergency maintenance on our systems to fix an issue in APAC. 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.
Jun 16, 11:25 CDT

ONESOURCE E-Invoicing performing Disaster Recovery (DR) Testing - 16 June 2026.

Completed - The scheduled maintenance has been completed.
Jun 16, 14:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 16, 10:00 CDT

Scheduled - ONESOURCE E-Invoicing DR Testing is scheduled on June 16, 2026 from 11 AM to 3:00 PM EST.
Jun 10, 11:41 CDT

OSPI Platform – UAT Emergency deployment in June 2026

Completed - The scheduled maintenance has been completed.
Jun 16, 13:45 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 16, 10:45 CDT

Scheduled - ONESOURCE Platform will be performing emergency maintenance on our systems to fix issue in UAT. 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.
Jun 16, 10:40 CDT

Reports and Analytics release Version 2026.05 in AMER PROD region

Completed - The scheduled maintenance has been completed.
Jun 16, 13:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 16, 06:00 CDT

Scheduled - The deployment of Reports and Analytics release version 2026.05 in the AMER PROD environment is scheduled from 06:00 AM to 1:00 PM CDT. Rest assured that your tax calculation services will not be affected during this maintenance period. However, the Reports and Analytics User interface will be unavailable until the maintenance is completed.
Jun 12, 03:25 CDT

DataFlow NextGen - Roll Forward, Batch Recalc delayed processing

Resolved - This incident has been resolved.
Jun 16, 12:55 CDT

Investigating - Slow Performance: We are currently experiencing a performance issue with the Roll Forward, Batch Recalc feature with our Roll Forward, Batch Recalc service.
Jun 16, 07:34 CDT

ONESOURCE E-Invoicing performing Disaster Recovery (DR) Testing - 16 June 2026.

Completed - Dear Valued Customers,

This email is to confirm the successful completion of the ONESOURCE E-Invoicing Disaster Recovery (DR) testing that was scheduled for today, Thursday, June 16th, 2026.

All services are now fully operational, and the ERP integration settings on E-Invoicing UI pages are available for changes again.

We appreciate your understanding during this essential testing period.

Best regards,
ONESOURCE E-Invoicing Product Management
Jun 16, 12:46 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 16, 10:20 CDT

Scheduled - ONESOURCE E-Invoicing DR Testing is scheduled on June 16, 2026 from 11 AM to 3:00 PM EST.
Jun 16, 10:16 CDT

OSPI Platform – AMER Minor release for June 2026

Completed - The scheduled maintenance has been completed.
Jun 16, 06:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 16, 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.
Jun 14, 22:37 CDT

Delay in Data for reports and analytics service in AMER PROD

Resolved - The Data catchup has been completed.
Jun 16, 03:01 CDT

Update - Reports and Analytics Service in AMER PROD is currently experiencing delay of around 7 hours 45 mins. We are working on the data catch up. Will notify once complete.
Jun 16, 00:44 CDT

Investigating - Reports and Analytics Service in AMER PROD is currently experiencing delay of around 7 hours. We are working on the data catch up. Will notify once complete.
Jun 15, 20:10 CDT

Jun 15, 2026

Reports and Analytics release Version 2026.05 in EMEA PROD region

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

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 15, 08:00 CDT

Scheduled - The deployment of Reports and Analytics release version 2026.05 in the EMEA PROD environment is scheduled from 08:00 AM to 3:00 PM CDT. Rest assured that your tax calculation services will not be affected during this maintenance period. However, the Reports and Analytics User interface will be unavailable until the maintenance is completed.
Jun 12, 03:22 CDT

Jun 14, 2026

ONESOURCE Corporate Tax [EMEA] - Downtime notification

Completed - The scheduled maintenance has been completed.
Jun 14, 00:02 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 13, 18:00 CDT

Scheduled - This is to inform you of upcoming ONESOURCE Platform database maintenance activities, which will have a downstream impact on ONESOURCE Corporate Tax (OCT).

The maintenance activity window is scheduled for Sunday, June 14 00:00 BST – 05:59 BST (up to ~6h).
Within this window, the expected downtime is from Sunday, June 14 00:00 BST – 02:00 BST (up to ~2 hours), during which ONESOURCE Corporate Tax will be unavailable.
Jun 12, 03:18 CDT

EMEA - ONESOURCE Platform Emergency Database Maintenance - June 2026.

Completed - The scheduled maintenance has been completed.
Jun 14, 00:01 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 13, 18:00 CDT

Scheduled - ONESOURCE Platform will be undergoing emergency maintenance in EMEA on Saturday June 13, 06:00 PM CDT to June 13, 11:59 PM CDT.
ONESOURCE Platform will be unavailable from Saturday June 13, 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.
Jun 2, 10:49 CDT

ONESOURCE Determination Enterprise Cloud — Emergency Database Maintenance (EMEA PROD)

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

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 13, 18:00 CDT

Scheduled - We're performing emergency database maintenance on ONESOURCE Determination Enterprise Cloud (EMEA Production) on June 13, 2026. The user interface and sign-in will be unavailable from 6:00 PM to 8:00 PM CDT. Tax calculations through the APIs will continue to work normally — only the user interface is affected.
Jun 5, 03:26 CDT

Jun 13, 2026

ONESOURCE Trusts [APAC] - Downtime notification

Completed - The scheduled maintenance has been completed.
Jun 13, 17:01 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 13, 11:01 CDT

Scheduled - This is to inform you of upcoming ONESOURCE Platform database maintenance activities, which will have a downstream impact on ONESOURCE Trusts (OST).

The maintenance activity window is scheduled for Sunday, June 14 02:00 AEST – 08:00 AEST (up to ~6h).
Within this window, the expected downtime is from Sunday, June 14 02:00 AEST – 04:00 AEST (up to ~2 hours), during which ONESOURCE Trusts will be unavailable.
Jun 12, 03:19 CDT

ONESOURCE Corporate Tax [APAC] - Downtime notification

Completed - The scheduled maintenance has been completed.
Jun 13, 17:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 13, 11:01 CDT

Scheduled - This is to inform you of upcoming ONESOURCE Platform database maintenance activities, which will have a downstream impact on ONESOURCE Corporate Tax (OCT).

The maintenance activity window is scheduled for Sunday, June 14 02:00 AEST – 08:00 AEST (up to ~6h).
Within this window, the expected downtime is from Sunday, June 14 02:00 AEST – 04:00 AEST (up to ~2 hours), during which ONESOURCE Corporate Tax will be unavailable.
Jun 12, 03:18 CDT

APAC - ONESOURCE Platform Emergency Database Maintenance - June 2026.

Completed - The scheduled maintenance has been completed.
Jun 13, 17:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 13, 11:00 CDT

Scheduled - ONESOURCE Platform will be undergoing emergency maintenance in APAC on Saturday, June 13, 11:00 AM CDT to 05:00 PM CDT.
ONESOURCE Platform will be unavailable from Saturday June 13, 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.
Jun 2, 10:49 CDT

UAT - ONESOURCE Platform Emergency Database Maintenance - June 2026.

Completed - The scheduled maintenance has been completed.
Jun 13, 09:01 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 13, 03:00 CDT

Scheduled - ONESOURCE Platform will be undergoing emergency maintenance in UAT on Saturday June 13, 03:00 AM CDT - 09:00 AM CDT.
ONESOURCE Platform will be unavailable from Saturday June 13, 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.
Jun 2, 10:49 CDT

ONESOURCE Determination Enterprise Cloud — Emergency Database Maintenance (UAT Environment)

Completed - The scheduled maintenance has been completed.
Jun 13, 09:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 13, 03:00 CDT

Scheduled - What's happening:
We will be performing essential database maintenance on ONESOURCE Indirect Tax Determination Enterprise Cloud in the UAT environment on Saturday, June 13, 2026. We've grouped several planned activities into one coordinated window to minimize disruption.

When:
- Maintenance window: Saturday, June 13, 2026, 3:00 AM – 9:00 AM CDT
- Expected downtime: 3:00 AM – 5:00 AM CDT (a 2-hour window within the broader maintenance period)

What to expect:
During the downtime window, the Determination user interface will be temporarily unavailable, so users will not be able to sign in or use UI-based features.

API services, including real-time tax calculations, will continue to run normally and will not be affected.

We apologize for any inconvenience and appreciate your patience as we work to keep the Determination platform secure and reliable.

If you have any questions, please contact the Thomson Reuters customer support team.

Thank you,
ONESOURCE Indirect Tax Product Management
Jun 5, 03:28 CDT

Delay in Data for reports and analytics service in AMER PROD

Resolved - This incident has been resolved.
Jun 13, 04:42 CDT

Update - Reports and Analytics Service in AMER PROD is currently experiencing delay of around 5 hours. We are working on the data catch up. Will notify once complete.
Jun 13, 01:59 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.
Jun 12, 19:39 CDT

Identified - Reports and Analytics Service in AMER PROD is currently experiencing delay of around 7 hours. We are working on the data catch up. Will notify once complete.
Jun 12, 12:08 CDT

Jun 12, 2026

OSPI Platform – EMEA Minor release for June 2026

Completed - The scheduled maintenance has been completed.
Jun 12, 19:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 12, 13:00 CDT

OSPI Platform – APAC Emergency Deployment - June 2026

Completed - The scheduled maintenance has been completed.
Jun 12, 15:20 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 12, 11:20 CDT

OSPI Platform – APAC Minor release for June 2026

Completed - The scheduled maintenance has been completed.
Jun 12, 11:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 12, 05:00 CDT

Unable to Fetch Templates In OSR

Resolved - This incident has been resolved.
Jun 12, 09:00 CDT

Investigating - We are currently experiencing an issue with our Reporting Entities 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.
Jun 12, 08:35 CDT

Jun 11, 2026

ONESOURCE GTM Degraded performance reported

Resolved - The issue has been resolved
Jun 11, 20:52 CDT

Monitoring - The issue has been resolved. We will continue to monitor for the next few hours
Jun 11, 06:41 CDT

Update - Our team will be initiating the deployment of software changes to address the identified issue starting at 4:30 AM EST. During this time, customers may experience temporary degraded performance while accessing the website and executing backend tasks.

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.
Jun 11, 03:19 CDT

Update - Our team has identified the issue and are working on a Software development fix. The Software development changes are being implemented at this time and will be expedited through validation and deployment to Production.

We will share another update when the deployment to Production starts.

We apologize for any inconvenience and appreciate your understanding and patience. If you have any questions, please contact Customer Support.
Jun 11, 02:17 CDT

Investigating - ONESOURCE GTM is currently experiencing an issue with the ZONE-TO-ZONE feature with our FOREIGN TRADE ZONE 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.
Jun 11, 00:54 CDT

OSPI Platform – UAT Minor release for June 2026

Completed - The scheduled maintenance has been completed.
Jun 11, 06:01 CDT

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

ONESOURCE API Administration Backend Services June 2026 release in all Production regions

Completed - The scheduled maintenance has been completed.
Jun 11, 06:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 11, 01:00 CDT

Scheduled - 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.
Jun 3, 02:38 CDT

ONESOURCE API Administration Backend Services June 2026 release in UAT.

Completed - The scheduled maintenance has been completed.
Jun 11, 03:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 10, 22:00 CDT

Scheduled - ONESOURCE API Administration will undergo scheduled maintenance to enhance system performance, reliability. 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.
Jun 3, 02:36 CDT

Disruptions accessing IDT User Interface [ UI] in UAT environment

Resolved - This incident has been resolved.
Jun 11, 02:23 CDT

Investigating - Dear Customers, We wanted to inform you that we are observing disruptions while accessing IDT User Interface [ UI] in UAT environment. Technical teams are currently working on it with high priority to restore the services. More details to follow soon. Thank you for your understanding and patience
Jun 11, 01:47 CDT

Jun 10, 2026

ONESOURCE Trust Tax Unscheduled Release and System Downtime for June 10 (AMERS)

Completed - The scheduled maintenance has been completed.
Jun 10, 22:30 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 10, 21:30 CDT

Scheduled - Access to all ONESOURCE Trust Tax applications will be suspended beginning at 9:30 P.M. (CT) on Wednesday, June 10, 2026 to release the fix to the inability to save negative values. The downtime duration is expected to be no more than 1 hour.
Jun 10, 16:40 CDT

Delay in Data for reports and analytics service in AMER PROD

Resolved - The data catch-up process has been completed successfully.
Jun 10, 20:31 CDT

Update - Reports and Analytics Service in AMER PROD is currently experiencing delay of around 7 hours. We are working on the data catch up. Will notify once complete.
Jun 10, 15:16 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.
Jun 10, 03:45 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.
Jun 9, 20:35 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
Jun 9, 07:56 CDT

Update - Reports and Analytics Service in AMER PROD is currently experiencing delay of around 8 hours. We are working on the data catch up. Will notify once complete
Jun 9, 00:58 CDT

Investigating - 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
Jun 8, 20:16 CDT

OSPI Platform – EMEA Emergency deployment in June 2026

Completed - The scheduled maintenance has been completed.
Jun 10, 17:30 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 10, 14:00 CDT

Scheduled - ONESOURCE Platform will be performing emergency 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.
Jun 10, 11:35 CDT

OSPI Platform – APAC Emergency deployment in June 2026

Completed - The scheduled maintenance has been completed.
Jun 10, 13:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 10, 11:45 CDT

ONESOURCE Oracle Fusion Rate to Regime Content release for EMEA JUNE 2026

Completed - The scheduled maintenance has been completed.
Jun 10, 12:30 CDT

Scheduled - ONESOURCE Oracle Fusion Rate to Regime Content release Content for EMEA region for JUNE 2026 has been released. It is available in Integration UI for download.
Jun 9, 06:48 CDT

OSPI Platform – UAT Emergency deployment in June 2026

Completed - The scheduled maintenance has been completed.
Jun 10, 07:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 10, 04:00 CDT

Jun 9, 2026

ONESOURCE IDT Determination Enterprise Cloud – Scheduled maintenance in the AWS AMER PROD environment (June 09)

Completed - The scheduled maintenance has been completed.
Jun 9, 16:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 9, 12:00 CDT

Scheduled - We are performing a scheduled maintenance in ONESOURCE Determination Enterprise Cloud AWS AMER PROD environment on June 09. This activity may cause brief interruptions to tax calculations. Failed transactions must be reprocessed by customers after maintenance.
Jun 5, 03:30 CDT

Reports and Analytics Complementary release version 2026.05 in EMEA UAT region

Completed - The scheduled maintenance has been completed.
Jun 9, 14:40 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 9, 10:40 CDT

Scheduled - We would like to inform you that a complementary maintenance deployment of the Reports and Analytics release version 2026.05 will take place in the EMEA UAT environment on June 9, 2026.

The maintenance window is scheduled from 10:30 AM to 2:30 PM CDT and may be extended if needed to ensure a successful deployment.

During this window, the Reports and Analytics user interface will be temporarily unavailable. However, Indirect Tax calculation services will remain unaffected.

We apologize for any inconvenience caused and appreciate your understanding and patience. If you have any questions or concerns, please feel free to reach out
Jun 9, 10:36 CDT

Instabilidade Momentânea PROD01 - Fila de Importação e Mensageria ECF/REINF (parcialmente mitigado)

Resolved - This incident has been resolved.
Jun 9, 10:11 CDT

Update - Identificamos, durante a manhã, uma instabilidade momentânea no ambiente PROD01, especificamente na fila de importações e na mensageria ECF/REINF.

No que se refere à mensageria ECF/REINF, informamos que o cenário já se encontra normalizado. Em relação à fila de importações, seguimos em análise, ainda com registro de instabilidade.

Nossa equipe técnica permanece atuando na análise e correção do problema. Como medida emergencial, os serviços afetados foram temporariamente interrompidos. Seguimos em avaliação e, neste momento, ainda não há previsão para normalização.

Para identificação do ambiente acesse
Jun 8, 10:18 CDT

Investigating - Instabilidade momentânea no ambiente PROD01, especificamente na fila de importações e na mensageria ECF/REINF.

Nossa equipe técnica já está atuando na análise e correção do problema. Para viabilizar a atuação emergencial, os serviços afetados foram temporariamente interrompidos. A previsão estimada para normalização é de aproximadamente 1 hora.

Para identificação do ambiente acesse.
Jun 8, 08:43 CDT

Jun 8, 2026

INC1711334-Couple of APIs intermittently getting 502 in PROD

Resolved - This incident has been resolved.
Jun 8, 19:24 CDT

Investigating - Intermittent Issues: We are currently experiencing intermittent issues with the Account Tracking and Shipment ODATA (GET) feature with our ONESOURCE Trust Tax Services service.
Jun 8, 10:59 CDT

ONESOURCE IDT Determination Enterprise Cloud - Backend Maintenance in the PROD Environment (AMER-AWS)

Completed - The scheduled maintenance has been completed.
Jun 8, 18:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 8, 16:00 CDT

Scheduled - ONESOURCE Determination Enterprise Cloud (AMER-AWS) - We are performing a maintenance activity in the PROD environment on June 08, 2026, between 05:00 PM - 07:00 PM ET. You may encounter occasional errors with the REST APIs during this activity, which may result in temporary issues with tax calculations. If this happens, simply try your request again.
May 18, 20:25 CDT

Reports and Analytics release Version 2026.05 in AMER UAT region

Completed - The scheduled maintenance has been completed.
Jun 8, 16:30 CDT

Update - The deployment of Reports and Analytics release version 2026.05 in the AMER UAT environment is scheduled for 09:30 AM to 4:30 PM CDT. Rest assured that your tax calculation services will not be affected during this maintenance period. However, the Reports and Analytics User interface will be unavailable until the maintenance is completed.
Jun 8, 09:50 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 8, 06:00 CDT

Update - The deployment of Reports and Analytics release version 2026.05 in the AMER UAT environment is scheduled for 04:00 AM to 11:00 AM CDT. Rest assured that your tax calculation services will not be affected during this maintenance period. However, the Reports and Analytics User interface will be unavailable until the maintenance is completed.
Jun 5, 09:13 CDT

Scheduled - The deployment of Reports and Analytics release version 2026.05 in the AMER UAT environment is scheduled for 06:00 AM to 1:00 PM CDT. Rest assured that your access to the user interface and tax calculation services will not be affected during this maintenance period.
Jun 4, 04:32 CDT

Jun 7, 2026

ONESOURCE Statutory Reporting - Legacy [EMEA]

Completed - The scheduled maintenance has been completed.
Jun 7, 22:30 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 7, 18:30 CDT

Update - ONESOURCE Statutory Reporting - Legacy [EMEA] will be undergoing scheduled maintenance during June 8, 2026 00:30 BST to June 8, 2026 04:30 BST.
Jun 3, 04:14 CDT

Scheduled - ONESOURCE Statutory Reporting - Legacy [EMEA] will be undergoing scheduled maintenance during June 8, 2026 00:30 BST to June 8, 2026 04:30 BST.
Jun 3, 03:52 CDT

ONESOURCE GTM – AWS Maintenance

Completed - The scheduled maintenance has been completed.
Jun 7, 17:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 7, 00:00 CDT

Scheduled - Thomson Reuters will be performing scheduled maintenance on Sunday, June 7th, 2026 beginning at 1 AM Eastern time and will conclude by Sunday, June 7th, 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.
Feb 25, 12:44 CST

ONESOURCE Statutory Reporting - Web [EMEA]

Completed - The scheduled maintenance has been completed.
Jun 7, 02:30 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 6, 16:30 CDT

Scheduled - ONESOURCE Statutory Reporting - Web [EMEA] will be undergoing scheduled maintenance during June 6, 2026 22:30 BST to June 7, 2026 08:30 BST.
Jun 4, 07:00 CDT

Jun 6, 2026

ONESOURCE IDT Determination Enterprise Cloud – Scheduled maintenance in the AWS AMER PROD environment (June 06)

Completed - The scheduled maintenance has been completed.
Jun 6, 09:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 6, 05:00 CDT

Scheduled - We are performing a scheduled maintenance in ONESOURCE Determination Enterprise Cloud AWS AMER PROD environment on June 06. This activity may cause brief interruptions to tax calculations. Failed transactions must be reprocessed by customers after maintenance.
Jun 3, 00:46 CDT

Delay in Data for reports and analytics service in AMER PROD

Resolved - This incident has been resolved.
Jun 6, 06:09 CDT

Investigating - Reports and Analytics Service in AMER PROD is currently experiencing delay of around 7 hours. We are working on the data catch up. Will notify once complete.
Jun 6, 00:09 CDT

ONESOURCE Statutory Reporting - Web [AMERS]

Completed - The scheduled maintenance has been completed.
Jun 6, 01:30 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 5, 15:30 CDT

Scheduled - ONESOURCE Statutory Reporting - Web [AMERS] will be undergoing scheduled maintenance during June 5, 2026 16:30 EDT to June 6, 2026 02:30 EDT.
Jun 4, 06:58 CDT

Jun 5, 2026

OSPI Platform – Emergency deployment in June 2026

Completed - The scheduled maintenance has been completed.
Jun 5, 19:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 5, 13:00 CDT

Reports and Analytics release Version 2026.05 in EMEA UAT region

Completed - The scheduled maintenance has been completed.
Jun 5, 15:00 CDT

Update - The deployment of Reports and Analytics release version 2026.05 in the EMEA UAT environment is scheduled for 08:00 AM to 3:00 PM CDT. Rest assured that your access to the user interface and tax calculation services will not be affected during this maintenance period. However, the Reports and Analytics User interface will be unavailable until the maintenance is completed.
Jun 5, 09:12 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 5, 08:00 CDT

Scheduled - The deployment of Reports and Analytics release version 2026.05 in the EMEA UAT environment is scheduled for 08:00 AM to 3:00 PM CDT. Rest assured that your access to the user interface and tax calculation services will not be affected during this maintenance period.
Jun 4, 04:33 CDT

OSPI Platform – APAC Emergency deployment in June 2026

Completed - The scheduled maintenance has been completed.
Jun 5, 11:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 5, 05:00 CDT

OSPI Platform – UAT Emergency deployment in June 2026

Completed - The scheduled maintenance has been completed.
Jun 5, 06:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 5, 00:00 CDT

Delay in Data for reports and analytics service in AMER PROD

Resolved - The Data catchup has been completed.
Jun 5, 05:14 CDT

Update - Reports and Analytics Service in AMER PROD is currently experiencing delay of around 7 hours. We are working on the data catch up. Will notify once complete.
Jun 5, 00:08 CDT

Investigating - Reports and Analytics Service in AMER PROD is currently experiencing delay of around 7 hours. We are working on the data catch up. Will notify once complete.
Jun 4, 19:06 CDT

ONESOURCE Determination Original Cloud: UAT OS Patching

Completed - The scheduled maintenance has been completed.
Jun 5, 04:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 4, 23:00 CDT

Scheduled - ONESOURCE Determination Original Cloud UAT is undergoing monthly OS patching from June 04, 2026 at 11:00 PM CST to June 05, 2026, at 4:00 AM CST. During this maintenance window, you will not be able to access the ONESOURCE Determination Original Cloud application in the UAT Environment. However, you can continue to access the Tax Calculation services and other Determination functions.
Jun 3, 16:47 CDT

Jun 4, 2026

ONESOURCE Indirect Compliance Maintenance Event (R2026.06) planned on Thursday 04th June 2026

Completed - The scheduled maintenance has been completed.
Jun 4, 23:30 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 4, 19:30 CDT

Scheduled - Database maintenance event in progress to deploy R2026.06

There will be limited service during this deployment.
May 25, 11:45 CDT

OSPI Platform – UAT, APAC, EMEA, AMER – User Administration Emergency deployments completed on June 4, 2026

Completed - The scheduled maintenance has been completed.
Jun 4, 18:05 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 4, 17:00 CDT

Scheduled - ONESOURCE Platform performed emergency maintenance to fix issues across UAT, APAC, EMEA and AMER on June 4, 2026.

Thank you for your cooperation.
Jun 4, 16:57 CDT

ONESOURCE API Administration UI Emergency Maintenance June 2026 – EMEA

Completed - The scheduled maintenance has been completed.
Jun 4, 17:01 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 4, 13:00 CDT

Scheduled - ONESOURCE API Administration will undergo Emergency maintenance to fix an issue in EMEA. 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.
Jun 3, 09:30 CDT

ONESOURCE Indirect Compliance Maintenance Event (R2026.06) planned on Thursday 4th June 2026

Completed - The scheduled maintenance has been completed.
Jun 4, 12:01 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 4, 08:00 CDT

Scheduled - Database maintenance event in progress to deploy R2026.06

There will be limited service during this deployment.
May 25, 11:50 CDT

ONESOURCE Determination Anywhere – Version 2026.03 Release Information (PROD environment)

Completed - The scheduled maintenance has been completed.
Jun 4, 12:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 4, 06:00 CDT

Scheduled - ONESOURCE Determination Anywhere – Version 2026.03 is being deployed in the PROD environment on June 04, 2026. Your access to the tax calculation services and the application will not be interrupted.
May 1, 06:59 CDT

ONESOURCE Fringe Benefits Tax

Completed - The scheduled maintenance has been completed.
Jun 4, 10:30 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 4, 09:30 CDT

Scheduled - ONESOURCE Fringe Benefits Tax will be unavailable from Friday 5th June 2026, 00:30 AEST to Friday 5th June 2026 01:30 AEST
Jun 4, 01:17 CDT

ONESOURCE Determination Enterprise Cloud– Version 2026.03 Release Information (PROD AMER environment)

Completed - The scheduled maintenance has been completed.
Jun 4, 10:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 4, 04:00 CDT

Scheduled - ONESOURCE Determination Enterprise Cloud– Version 2026.03 is being deployed in the PROD AMER environment on June 04, 2026. Your access to the tax calculation services and the application will not be interrupted.
May 1, 06:53 CDT

ONESOURCE API Administration UI Emergency Maintenance June 2026 – APAC

Completed - The scheduled maintenance has been completed.
Jun 4, 09:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 4, 05:00 CDT

Scheduled - ONESOURCE API Administration will undergo Emergency maintenance to fix an issue in APAC . 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.
Jun 3, 09:29 CDT

OSPI Platform – AMER Emergency deployment in June 2026

Completed - The scheduled maintenance has been completed.
Jun 4, 06:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 4, 00:00 CDT

ONESOURCE API Administration UI Emergency Maintenance June 2026 – UAT

Completed - The scheduled maintenance has been completed.
Jun 4, 04:01 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 4, 00:00 CDT

Scheduled - ONESOURCE API Administration will undergo Emergency maintenance to fix an issue in UAT. 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.
Jun 3, 09:28 CDT

Delay in Data for reports and analytics service in AMER PROD

Resolved - The Data catchup has been completed.
Jun 4, 02:38 CDT

Update - Reports and Analytics Service in AMER PROD is currently experiencing delay of around 8 hrs 30 mins hours. We are working on the data catch up. Will notify once complete.
Jun 3, 23:09 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.
Jun 3, 18:59 CDT

Investigating - Reports and Analytics Service in AMER PROD is currently experiencing delay of around 8 hours. We are working on the data catch up. Will notify once complete.
Jun 3, 11:00 CDT

ONESOURCE Statutory Reporting - Web [AMERS]

Completed - The scheduled maintenance has been completed.
Jun 4, 01:30 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 3, 15:30 CDT

Scheduled - ONESOURCE Statutory Reporting - Web [AMERS] will be undergoing scheduled maintenance during June 3, 2026 16:30 EDT to June 4, 2026 02:30 EDT.
May 29, 15:54 CDT

Jun 3, 2026

ONESOURCE Income Tax Maintenance

Completed - The scheduled maintenance has been completed.
Jun 3, 21:30 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 3, 21:00 CDT

Scheduled - ONESOURCE Income Tax - AMERS will be undergoing maintenance on Wednesday, June 3rd 9pm - 9:30pm CT. ONESOURCE Income Tax - AMERS will be unavailable during this time.
Jun 3, 15:21 CDT

ONESOURCE Statutory Reporting - Web [APAC]

Completed - The scheduled maintenance has been completed.
Jun 3, 15:00 CDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 3, 05:00 CDT

Scheduled - ONESOURCE Statutory Reporting - Web [APAC] will be undergoing scheduled maintenance during June 3, 2026 20:00 AEDT to June 4, 2026 06:00 AEDT.
May 29, 15:54 CDT

Trust Tax Application is experiencing Technical issues and currently processing is unavailable

Resolved - This incident has been resolved.
Jun 3, 12:48 CDT

Investigating - We are currently experiencing an issue with the processing feature with our Trust Tax service, which is temporarily unavailable.
Jun 3, 10:28 CDT

Delay in Data for reports and analytics service in AMER PROD

Resolved - The data catch-up process has been completed successfully
Jun 3, 03:38 CDT

Update - Reports and Analytics Service in AMER PROD is currently experiencing delay of around 8 hours. We are working on the data catch up. Will notify once complete.
Jun 2, 21:10 CDT

Update - Reports and Analytics Service in AMER PROD is currently experiencing delay of around 7 hours. We are working on the data catch up. Will notify once complete.
Jun 2, 15:39 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.
Jun 2, 04:00 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.
Jun 1, 21:52 CDT

Identified - Reports and Analytics Service in AMER PROD is currently experiencing delay of around 8 hours. We are working on the data catch up, will notify once complete.
Jun 1, 15:33 CDT

All Systems Operational

Scheduled Maintenance

ONESOURCE Oracle Fusion Rate to Regime Content release for LATAM JUNE 2026 Jun 16, 2026 12:30 - Jun 17, 2026 12:30 CDT

ONESOURCE Tax Provision Maintenance EMEA Jun 18, 2026 15:00-17:00 CDT

ONESOURCE Corporate Tax [EMEA] - Release Update Jun 18, 2026 17:30-23:30 CDT

ONESOURCE Tax Provision Maintenance AMERS Jun 18, 2026 23:00 - Jun 19, 2026 02:00 CDT

OSPI Platform – UAT User Administration Minor release for June 2026 Jun 19, 2026 00:00-06:00 CDT

ONESOURCE Trusts [APAC] - Release Update Jun 19, 2026 10:30-16:30 CDT

ONESOURCE Corporate Tax [APAC] - Release Update Jun 19, 2026 10:30-16:30 CDT

ONESOURCE Tax Provision Maintenance Jun 19, 2026 18:00 - Jun 21, 2026 09:30 CDT

Abacus EMEA OCT and OAP Citrix servers security patching Jun 19, 2026 19:00-23:00 CDT

ONESOURCE Income Tax Maintenance Jun 19, 2026 20:00 - Jun 20, 2026 02:00 CDT

ONESOURCE Determination Enterprise Cloud — Emergency Database Maintenance (AMER PROD) Jun 20, 2026 02:00-14:00 CDT

AMER - ONESOURCE Platform Emergency Database Maintenance - June 2026. Jun 20, 2026 02:00-14:00 CDT

ONESOURCE GTM – AWS Maintenance Jun 21, 2026 00:00-17:00 CDT

OSPI Platform – APAC User Administration Minor release for June 2026 Jun 22, 2026 05:00-11:00 CDT

OSPI Platform – EMEA User Administration Minor release for June 2026 Jun 22, 2026 13:00-19:00 CDT

ONESOURCE Data Query Maintenance Jun 22, 2026 19:00-22:00 CDT

OSPI Platform – AMER User Administration Minor release for June 2026 Jun 23, 2026 00:00-06:00 CDT

ONESOURCE Income Tax Maintenance Jun 23, 2026 00:00-01:30 CDT

OSPI Platform – UAT Major release for June 2026 Jun 25, 2026 00:00-06:00 CDT

OSPI Platform – APAC Major release for June 2026 Jun 26, 2026 05:00-11:00 CDT

OSPI Platform – EMEA Major release for June 2026 Jun 26, 2026 13:00-19:00 CDT

ONESOURCE Tax Provision Next Gen Maintenance Jun 26, 2026 18:00 - Jun 27, 2026 06:00 CDT

GoSystem Tax RS Maintenance Jun 26, 2026 18:00 - Jun 27, 2026 06:00 CDT

ONESOURCE Tax Provision Next Gen Maintenance Jun 26, 2026 18:00 - Jun 27, 2026 06:00 CDT

ONESOURCE Income Tax Maintenance Jun 26, 2026 18:00 - Jun 27, 2026 06:00 CDT

ONESOURCE Tax Provision Maintenance Jun 26, 2026 18:00 - Jun 27, 2026 06:00 CDT

ONESOURCE Trust Tax Maintenance Jun 26, 2026 18:00 - Jun 27, 2026 06:00 CDT

ONESOURCE General Ledger Manager Maintenance Jun 26, 2026 18:00 - Jun 27, 2026 06:00 CDT

ONESOURCE Sales & Use Tax Compliance Maintenance Jun 26, 2026 18:00 - Jun 27, 2026 06:00 CDT

ONESOURCE Workpapers Maintenance Jun 26, 2026 18:00 - Jun 27, 2026 06:00 CDT

ONESOURCE DataFlow NextGen Maintenance Jun 26, 2026 18:00 - Jun 27, 2026 06:00 CDT

ONESOURCE Income Tax Workpapers Maintenance Jun 26, 2026 18:00 - Jun 27, 2026 06:00 CDT

ONESOURCE State Apportionment Maintenance Jun 26, 2026 18:00 - Jun 27, 2026 06:00 CDT

ONESOURCE Tax Information Reporting Maintenance Jun 27, 2026 22:00 - Jun 28, 2026 07:00 CDT

ONESOURCE Tax Information Reporting System Maintenance 27th June 2026 (AMERS) Jun 27, 2026 22:00 - Jun 28, 2026 07:00 CDT

OSPI Platform – AMER Major release for June 2026 Jun 29, 2026 00:00-06:00 CDT

End of Life Notice: ONESOURCE Determination Original – Service Retirement on July 01, 2026 Jun 30, 2026 23:00 - Jul 1, 2026 00:00 CDT

ONESOURCE Statutory Reporting - Web [AMERS] Jul 2, 2026 21:30-22:30 CDT

ONESOURCE GTM – AWS Maintenance Jul 5, 2026 00:00-17:00 CDT

ONESOURCE GTM – AWS Maintenance Jul 19, 2026 00:00-17:00 CDT

ONESOURCE Tax Information Reporting System Maintenance 25th July 2026 (AMERS) Jul 25, 2026 22:00 - Jul 26, 2026 07:00 CDT

ONESOURCE GTM – AWS Maintenance Aug 9, 2026 00:00-17:00 CDT

ONESOURCE Tax Information Release OTIR Release 26.03 11th August 2026 (AMERS) Aug 11, 2026 19:00 - Aug 12, 2026 06:00 CDT

2026 Disaster Recovery Testing for ONESOURCE Determination Enterprise Cloud (AWS EMEA) Aug 22, 2026 00:00-06:00 CDT

2026 Disaster Recovery Testing for ONESOURCE Determination Enterprise Cloud and Determination Anywhere (AWS AMER) Aug 22, 2026 00:00-06:00 CDT

ONESOURCE Tax Information Reporting System Maintenance 22nd August 2026 (AMERS) Aug 22, 2026 22:00 - Aug 23, 2026 07:00 CDT

ONESOURCE GTM – AWS Maintenance Aug 23, 2026 00:00-17:00 CDT

ONESOURCE GTM – AWS Maintenance Sep 6, 2026 00:00-17:00 CDT

ONESOURCE GTM – AWS Maintenance Sep 20, 2026 00:00-17:00 CDT

ONESOURCE Tax Information Release OTIR Release 26.04 20th October 2026 (AMERS) Oct 20, 2026 19:00 - Oct 21, 2026 06:00 CDT

Past Incidents

ONESOURCE Oracle Fusion Rate to Regime Content release for LATAM JUNE 2026 Jun `16`, `2026` `12:30` - Jun `17`, `2026` `12:30` CDT

ONESOURCE Tax Provision Maintenance EMEA Jun `18`, `2026` `15:00`-`17:00` CDT

ONESOURCE Corporate Tax [EMEA] - Release Update Jun `18`, `2026` `17:30`-`23:30` CDT

ONESOURCE Tax Provision Maintenance AMERS Jun `18`, `2026` `23:00` - Jun `19`, `2026` `02:00` CDT

OSPI Platform – UAT User Administration Minor release for June 2026 Jun `19`, `2026` `00:00`-`06:00` CDT

ONESOURCE Trusts [APAC] - Release Update Jun `19`, `2026` `10:30`-`16:30` CDT

ONESOURCE Corporate Tax [APAC] - Release Update Jun `19`, `2026` `10:30`-`16:30` CDT

ONESOURCE Tax Provision Maintenance Jun `19`, `2026` `18:00` - Jun `21`, `2026` `09:30` CDT

Abacus EMEA OCT and OAP Citrix servers security patching Jun `19`, `2026` `19:00`-`23:00` CDT

ONESOURCE Income Tax Maintenance Jun `19`, `2026` `20:00` - Jun `20`, `2026` `02:00` CDT

ONESOURCE Determination Enterprise Cloud — Emergency Database Maintenance (AMER PROD) Jun `20`, `2026` `02:00`-`14:00` CDT

AMER - ONESOURCE Platform Emergency Database Maintenance - June 2026. Jun `20`, `2026` `02:00`-`14:00` CDT

ONESOURCE GTM – AWS Maintenance Jun `21`, `2026` `00:00`-`17:00` CDT

OSPI Platform – APAC User Administration Minor release for June 2026 Jun `22`, `2026` `05:00`-`11:00` CDT

OSPI Platform – EMEA User Administration Minor release for June 2026 Jun `22`, `2026` `13:00`-`19:00` CDT

ONESOURCE Data Query Maintenance Jun `22`, `2026` `19:00`-`22:00` CDT

OSPI Platform – AMER User Administration Minor release for June 2026 Jun `23`, `2026` `00:00`-`06:00` CDT

ONESOURCE Income Tax Maintenance Jun `23`, `2026` `00:00`-`01:30` CDT

OSPI Platform – UAT Major release for June 2026 Jun `25`, `2026` `00:00`-`06:00` CDT

OSPI Platform – APAC Major release for June 2026 Jun `26`, `2026` `05:00`-`11:00` CDT

OSPI Platform – EMEA Major release for June 2026 Jun `26`, `2026` `13:00`-`19:00` CDT

ONESOURCE Tax Provision Next Gen Maintenance Jun `26`, `2026` `18:00` - Jun `27`, `2026` `06:00` CDT

GoSystem Tax RS Maintenance Jun `26`, `2026` `18:00` - Jun `27`, `2026` `06:00` CDT

ONESOURCE Tax Provision Next Gen Maintenance Jun `26`, `2026` `18:00` - Jun `27`, `2026` `06:00` CDT

ONESOURCE Income Tax Maintenance Jun `26`, `2026` `18:00` - Jun `27`, `2026` `06:00` CDT

ONESOURCE Tax Provision Maintenance Jun `26`, `2026` `18:00` - Jun `27`, `2026` `06:00` CDT

ONESOURCE Trust Tax Maintenance Jun `26`, `2026` `18:00` - Jun `27`, `2026` `06:00` CDT

ONESOURCE General Ledger Manager Maintenance Jun `26`, `2026` `18:00` - Jun `27`, `2026` `06:00` CDT

ONESOURCE Sales & Use Tax Compliance Maintenance Jun `26`, `2026` `18:00` - Jun `27`, `2026` `06:00` CDT

ONESOURCE Workpapers Maintenance Jun `26`, `2026` `18:00` - Jun `27`, `2026` `06:00` CDT

ONESOURCE DataFlow NextGen Maintenance Jun `26`, `2026` `18:00` - Jun `27`, `2026` `06:00` CDT

ONESOURCE Income Tax Workpapers Maintenance Jun `26`, `2026` `18:00` - Jun `27`, `2026` `06:00` CDT

ONESOURCE State Apportionment Maintenance Jun `26`, `2026` `18:00` - Jun `27`, `2026` `06:00` CDT

ONESOURCE Tax Information Reporting Maintenance Jun `27`, `2026` `22:00` - Jun `28`, `2026` `07:00` CDT

ONESOURCE Tax Information Reporting System Maintenance 27th June 2026 (AMERS) Jun `27`, `2026` `22:00` - Jun `28`, `2026` `07:00` CDT

OSPI Platform – AMER Major release for June 2026 Jun `29`, `2026` `00:00`-`06:00` CDT

End of Life Notice: ONESOURCE Determination Original – Service Retirement on July 01, 2026 Jun `30`, `2026` `23:00` - Jul `1`, `2026` `00:00` CDT

ONESOURCE Statutory Reporting - Web [AMERS] Jul `2`, `2026` `21:30`-`22:30` CDT

ONESOURCE GTM – AWS Maintenance Jul `5`, `2026` `00:00`-`17:00` CDT

ONESOURCE GTM – AWS Maintenance Jul `19`, `2026` `00:00`-`17:00` CDT

ONESOURCE Tax Information Reporting System Maintenance 25th July 2026 (AMERS) Jul `25`, `2026` `22:00` - Jul `26`, `2026` `07:00` CDT

ONESOURCE GTM – AWS Maintenance Aug `9`, `2026` `00:00`-`17:00` CDT

ONESOURCE Tax Information Release OTIR Release 26.03 11th August 2026 (AMERS) Aug `11`, `2026` `19:00` - Aug `12`, `2026` `06:00` CDT

2026 Disaster Recovery Testing for ONESOURCE Determination Enterprise Cloud (AWS EMEA) Aug `22`, `2026` `00:00`-`06:00` CDT

2026 Disaster Recovery Testing for ONESOURCE Determination Enterprise Cloud and Determination Anywhere (AWS AMER) Aug `22`, `2026` `00:00`-`06:00` CDT

ONESOURCE Tax Information Reporting System Maintenance 22nd August 2026 (AMERS) Aug `22`, `2026` `22:00` - Aug `23`, `2026` `07:00` CDT

ONESOURCE GTM – AWS Maintenance Aug `23`, `2026` `00:00`-`17:00` CDT

ONESOURCE GTM – AWS Maintenance Sep `6`, `2026` `00:00`-`17:00` CDT

ONESOURCE GTM – AWS Maintenance Sep `20`, `2026` `00:00`-`17:00` CDT

ONESOURCE Tax Information Release OTIR Release 26.04 20th October 2026 (AMERS) Oct `20`, `2026` `19:00` - Oct `21`, `2026` `06:00` CDT