Thomson Reuters Tax & Accounting
Tax, accounting, and audit software for firms and corporations with AI-powered research and compliance tools like CoCounsel Tax, UltraTax CS, and ONESOURCE.
- Paid
- Web, Cloud, Desktop (Windows)
- AI Tools for Accounting

What is Thomson Reuters Tax & Accounting?
Key features
CoCounsel Tax and CoCounsel Audit AI assistants with citation-backed answers
UltraTax CS for automated 1040 and business return preparation
ONESOURCE suite for corporate tax determination, income tax, and indirect compliance
Automated tax research and compliance workflows
SafeSend for secure client deliverables and e-signature
Firm workflow tools including Ready to Advise and Ready to Review
Pros & cons
Advantages
- Established, trusted vendor with a broad, integrated tax, accounting, and audit product suite
- AI features (CoCounsel) provide citation-backed research and workflow automation
- Scales from small accounting firms to large corporations and government agencies
Limitations
- No public self-serve pricing; a sales quote is required to buy
- Enterprise-oriented, with complexity and cost that may not suit individuals or very small firms
- AI capabilities are spread across several separately-licensed products rather than one unified tool
Use cases
Tax return preparation for accounting firms
Corporate tax determination and indirect/sales tax compliance
Audit engagement and assurance workflows
AI-assisted tax research and client advisory
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