Thomson Reuters Expands CoCounsel AI Suite Across Legal, Tax, and Audit Workflows

SHERIDAN, WYOMING - April 14, 2026 - Thomson Reuters has introduced new enhancements to its CoCounsel Legal platform, extending AI-driven capabilities across legal research, analysis, and drafting while simultaneously positioning CoCounsel Tax and CoCounsel Audit as core tools for accounting and compliance professionals. The company's AI suite now spans legal practice, corporate tax, audit automation, global trade compliance, and risk investigation, anchored by the Westlaw content database and the Practical Law editorial network. For law firms, corporate legal departments, and tax and audit professionals, the expansion signals a shift toward unified, AI-first workflow platforms in place of standalone point solutions.

Business Impact

The CoCounsel suite is structured as an integrated layer above Thomson Reuters' existing content assets. CoCounsel Legal draws on Westlaw - built on 150 years of legal expertise - and Practical Law, which is supported by more than 650 attorney-editors producing guides, templates, and checklists. The combination allows firms to move from research to drafted deliverables within a single environment rather than switching between platforms. Two case studies referenced by the company illustrate operational scope: Brinks used CoCounsel to streamline legal operations, reduce outside counsel spend, and strengthen global operations, while Harris, Hardy & Johnstone converted document reviews that previously took an hour into tasks completed in minutes. For law firms and corporate legal teams evaluating AI integration, these examples indicate measurable efficiency gains are achievable within existing workflows.

Tax and Audit Workflow Automation

CoCounsel Tax automates tax research and client deliverable preparation by centralizing firm data alongside trusted external content sources. CoCounsel Audit standardizes audit workflows through AI-powered automation that delivers citation-backed insights, enabling audit teams to verify outputs directly against source material. Two additional products extend the automation footprint for accounting firms: SafeSend and Ready to Review both target 1040 return preparation, automating manual data-entry tasks to help practices scale capacity without proportional headcount increases. The ONESOURCE suite addresses corporate tax complexity at the multi-entity and multi-jurisdiction level, covering income tax filing, indirect compliance across VAT, GST, and sales tax, and global e-invoicing through ONESOURCE Pagero.

Global Trade and Risk Compliance

ONESOURCE Global Classification AI automates Harmonized System code classification for import and export, a compliance function that typically demands specialist knowledge and is subject to frequent regulatory change. ONESOURCE Denied Party Screening monitors against more than 750 global sanctions and restricted-party lists, providing automated screening for organizations with cross-border exposure. The CLEAR platform addresses investigation and fraud-detection use cases, combining public-records data with AI-driven workflows for identity verification, adverse media monitoring, and risk scoring. Thomson Reuters is positioning this compliance and risk layer for corporate risk teams, trade compliance professionals, and public-sector investigators, including law enforcement and government users.

Key facts:

  • CoCounsel Legal is grounded in Westlaw content built on 150 years of legal expertise and Practical Law's 650+ attorney-editors
  • Brinks reduced outside counsel spend and strengthened global legal operations using CoCounsel
  • Harris, Hardy & Johnstone cut hour-long document reviews to minutes with CoCounsel
  • ONESOURCE Denied Party Screening covers more than 750 global sanctions and restricted-party lists
  • SafeSend and Ready to Review automate 1040 return preparation to eliminate manual data-entry tasks
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