Thomson Reuters Launches Agentic AI Platform for Legal and Tax Professionals

Thomson Reuters launches agentic AI for legal and tax work

Thomson Reuters launched agentic AI systems on June 2, 2025, starting with CoCounsel for tax, audit, and accounting professionals, to perform complex tasks with transparency and precision. This development follows the acquisition of Materia, an AI copilot startup specializing in agentic systems. Agentic AI plans, reasons, acts, and reacts within real workflows, differing from AI assistants that simply respond to prompts. Thomson Reuters agents are refined by experts to align with professional standards, ensuring human oversight for validation and decisions. David Wong, Chief Product Officer at Thomson Reuters, stated, "Agentic AI isn't a marketing buzzword. It's a new blueprint for how complex work gets done." He added that the AI breaks complex tasks into steps and escalates for human input when needed. The Thomson Reuters agentic platform has been in development for over a year and is now integrated into legal, tax, risk, and compliance platforms. This approach re-architects core product experiences, utilizing features and content from platforms like Checkpoint, Westlaw, and Practical Law. Wong said, "We're not just rebranding AI assistants. We're engineering full agentic systems -- backed by trusted content, custom-trained models, and real domain expertise." CoCounsel, the first live agentic experience, is designed for tax and accounting professionals. It automates tasks, such as client file review and memo drafting, connecting firm knowledge, Checkpoint, IRS code, and internal documents into an AI-guided workspace. Kevin Merlini, Vice President of Product at Thomson Reuters and former CEO of Materia, stated, "This isn't GenAI in a prettier wrapper -- it's a fully integrated, intelligent system built to do the work." Olivier Godement, Head of Product, Platform at OpenAI, said, "As more platforms launch agentic capabilities, OpenAI is thrilled to power use cases like the ones Thomson Reuters is bringing to its vast ecosystem of professional users." Rich Marlatt, Chief Information Officer at BLISS 1041, said that CoCounsel reduced the review time for residency and filing codes across 36 states from half a week to under an hour. "We built our own templates in CoCounsel for 1041 returns across 50 states and now due to agentic research and reusable templates, we can feed client-specific factors and instantly understand how each state handles them," Marlatt said. Launching next is Ready to Review, an agentic tax prep application built on the GoSystem Tax Engine that drafts returns, adapts to feedback, and resolves diagnostics independently. Thomson Reuters plans to expand agentic systems across legal, risk, and compliance domains, including intelligent workflows for drafting, policy generation, deposition analysis, and risk assessments. These systems are: Thomson Reuters possesses assets, including over 20 billion documents, 15 petabytes of data, and 500 content assets. The company has 4,500 subject matter experts and 180 AI engineers and serves over 500,000 customers, including the Fortune 100 and the U.S. federal court system. Deep integrations include OpenAI, Anthropic, AWS, and Google. The enterprise-grade platform has ISO 42001 certification and a secure, zero-retention architecture.

Thomson Reuters Debuts Agentic AI Platform, Targets Professional Workflow Automation | PYMNTS.com

Thomson Reuters has launched an artificial intelligence (AI) platform designed to help professionals automate complex workflows. The platform -- Agentic Intelligence -- integrates with professional applications to plan, reason and act across tasks while maintaining audit trails and data controls. The launch also includes a new tool, CoCounsel for Tax, developed for tax, audit and accounting professionals. It connects internal knowledge, regulatory materials and firm-specific data into a single workspace. According to Thomson Reuters, early users report gains in speed and accuracy. Accounting firm BLISS 1041 used the system to reduce residency and filing code reviews from several days to under an hour. CoCounsel for Tax is now available in the U.S., with expanded features and geographies expected by year-end. The company said Agentic Intelligence draws on more than 20 billion proprietary and public documents and is supported by 4,500 subject matter experts. It leverages recent investments in AI infrastructure and partnerships with OpenAI, Anthropic, Google Cloud and AWS. Agentic Intelligence marks a broader shift toward embedding AI across industries once reliant on manual expertise. The next product, Ready to Review, will focus on tax return preparation. Thomson Reuters plans to expand the platform into legal, compliance and risk sectors in 2025. CoCounsel for Tax builds on recent acquisitions such as the 2024 purchase of Materia and 2023 purchase of Casetext, a legal AI company that developed one of the first GPT-powered tools for lawyers. Since then, the company has made AI a central pillar of its growth strategy. "Agentic AI isn't a marketing buzzword. It's a new blueprint for how complex work gets done," said David Wong, chief product officer at Thomson Reuters. "We're delivering systems that don't just assist but operate inside the workflows professionals use every day. The AI understands the goal, breaks it into steps, takes action, and knows when to escalate for human input -- all with human oversight built in to ensure accountability and trust."