Newsletter
Join the Community
Subscribe to our newsletter for the latest news and updates
Thomson Reuters professional tax software for accounting firms
UltraTax CS is Thomson Reuters' flagship professional tax preparation software, widely regarded as the industry standard for mid-to-large accounting firms preparing complex federal and state returns. Part of the CS Professional Suite, UltraTax CS provides comprehensive coverage of all return types with seamless integration to other CS modules. The software handles 1040, 1120, 1120S, 1065, 1041, 706, 709, 990, and all states with sophisticated handling of complex situations including foreign tax credits, complex depreciation, alternative minimum tax, and consolidated returns. The Return Comparison tool highlights changes year-over-year, helping preparers identify unusual fluctuations. Automatic data flow between return types minimizes redundant entry for related returns. Integration with Accounting CS enables direct import of trial balance data for business return preparation. The review process is supported by detailed diagnostics and item-level notes. UltraTax CS's integration with Thomson Reuters Checkpoint provides authoritative tax research within the preparation workflow. The platform's depth of coverage for complex situations—multi-state, international, complex entity structures—is its primary strength. While the interface reflects its desktop heritage, the onvio cloud platform increasingly enables web-based workflows. UltraTax is used by many of the top 100 CPA firms as their primary tax preparation platform. The software's reliability during tax season peaks and comprehensive state coverage are particularly valued by large firm operations managers.