About Thomson Reuters Tax
Thomson Reuters Corp HQ Toronto; live founded **2008** = Corp formation (Thomson + Reuters merger), **not** older Checkpoint/RIA lineage — label carefully. Tax & accounting corporate HQ listed **6160 Warren Parkway, Frisco, TX 75034**; Canada offices include **19 Duncan Street, Toronto, Ontario M5H 3H1**. Hub features UltraTax CS, CoCounsel Tax, ONESOURCE Determination; categories tax planning & preparation, tax research & guidance. Audience: accountants, enterprise. IR (24 Feb 2026): **one million professionals** use CoCounsel across **107 countries and territories**; CoCounsel Legal + Tax and Audit + ONESOURCE+; **4,500+** TR subject-matter experts for validation; multi-model (Anthropic Claude, OpenAI GPT, Google Gemini + proprietary); customer data not repurposed to train third-party models.
CoCounsel Tax: research from Checkpoint, IRC, government sources with citations; document upload/analyze; client deliverables; agentic multi-step workflows. Survey footnote Nov–Dec 2025 self-reported 32% time savings — company disclaimer, not independently verified. Phone 800-968-8900.
Not roster AI-native. Professional-grade CoCounsel Tax with citation-backed outputs and expert-validation narrative — AI on Checkpoint/ONESOURCE franchise, not greenfield AI-only.
Highlights
- CoCounsel Tax + Checkpoint + UltraTax CS + ONESOURCE Determination stack
- 1M CoCounsel users / 107 countries (company IR Feb 2026); demo/sales-led pricing (**thin** public $)
- US research-heavy CoCounsel Tax marketing — do not assume full Blue J IBFD-style multi-jurisdiction parity without primary matrix