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Once Source Tax Provision and ONESOURCE Uncertain Tax Positions become unavailable to customers

Incident Report for Thomson Reuters Corporates

Resolved

This incident has been resolved.
Posted Nov 10, 2026 - 11:25 CST

Update

We are continuing to investigate this issue.
Posted Nov 10, 2026 - 11:06 CST

Investigating

We are currently experiencing an issue with OnceSource Tax Provision and ONESOURCE Uncertain Tax Positions 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.
Posted Nov 10, 2026 - 10:56 CST
This incident affected: Direct Tax (AMERS Tax Provision, AMERS Uncertain Tax Positions).