Thomson Reuters brings fiduciary‑grade agentic AI to Australian legal and corporate professionals

SYDNEY, March 12, 2026 — Thomson Reuters  (TSX/Nasdaq: TRI), a global content and technology company, today announced the launch of two professional agentic AI solutions to the Australian market. ONESOURCE+ and Westlaw Advantage Australia, the company’s most advanced AI offering in Australia to date, bring fiduciary-grade AI into the daily workflows of legal, tax, and compliance professionals. 

Unveiled at the third SYNERGY Sydney conference, the launches reflect a broader shift underway in regulated industries: AI is moving from pilots to production systems embedded into daily professional workflows.

“In regulated professions, AI can’t just be impressive — it has to be accountable. Legal, tax and compliance professionals in Australia are moving beyond experimentation and demanding AI they can rely on for high-stakes work," said Vishal Bali, Managing Director of Asia and Emerging Markets. "By bringing Westlaw Advantage Australia and ONESOURCE+ to market, we’re embedding fiduciary‑grade agentic AI directly into the workflows professionals use every day — grounded in authoritative content, deep domain expertise, and governed by design.”

CoCounsel: the technology powering the innovations

CoCounsel, Thomson Reuters AI technology chosen by one million professionals globally, is embedded across its legal and corporate solutions. It integrates into the tools professionals already use, is grounded in licensed authoritative content, and applies expert‑defined validation shaped by more than 4,500 subject‑matter experts. It operates with data boundaries by design and a governed multi‑model architecture that combines frontier models with proprietary technology and structured datasets to maintain system‑level oversight - enabling AI to support the completion of high‑stakes professional work, not just assistance. 

Powered by CoCounsel, Thomson Reuters today brings agentic AI to Australia in: 

Westlaw Advantage Australia  

Westlaw Advantage with Deep Research – the legal industry’s first fiduciary-grade agentic AI research capability - is now available for professionals across Australia, following successful launches in the U.S., UK and Canada.

Designed to directly address the verification burden that has limited the value of generic AI tools, Deep Research enables legal professionals to hand off full research questions to an AI agent that not only understands the assignment — it autonomously builds legal research strategies, explains its process, sources its answers, and builds the argument foundations, with human oversight. This is trusted Australian legal content and intelligent automation working together, transforming manual searching into genuine insight with unmatched confidence and speed. 

Westlaw Advantage marks the start of Thomson Reuters plans to bring the full suite of CoCounsel Legal capabilities to Australia, with Deep Research on Practical Law, CoCounsel integrations, Tabular analysis and more agentic workflows coming in 2026.  

Furthermore, Thomson Reuters is set to bring Deep Research to Singapore, Hong Kong, and New Zealand in the coming 12 months. 

ONESOURCE+  

Now live across Asia-Pacific and MENA, ONESOURCE+ is the only Intelligent Compliance Network that brings together tax, trade, legal, and risk solutions to help organisations drive efficiency, reduce risk, and unlock growth. 

Built as a scalable network - not a single platform - ONESOURCE+ connects data, content, and workflows to give organisations a coordinated, governed view of their global risk exposures, turning disconnected compliance activities into outcome-driven operations for corporations worldwide. 
 
In Australia, key product highlights coming soon include: 

• ONESOURCE Global Indirect Compliance leverages agentic AI and human-in-the-loop oversight to deliver touchless compliance. From data import to ready-to-review returns for multi-jurisdictional filing, ONESOURCE Global Indirect Compliance is fully automated and fully auditable. New local compliance data and calculations will be added to the platform throughout 2026. 
• ONESOURCE Sales and Use Tax AI also harnesses agentic AI and end-to-end automation to eliminate manual processes, enabling US entities to file accurate, signature-ready returns across thousands of jurisdictions, reduce audit risk, and save 40–60% in preparation time —empowering teams to focus on strategic business initiatives. 
• CoCounsel Legal is a next-generation agentic AI solution that brings together legal research, essential workflow automation, intelligent document search and AI-powered legal assistance within one unified solution. 

Thomson Reuters

Thomson Reuters (TSX/Nasdaq: TRI) informs the way forward by bringing together the trusted content and technology that people and organizations need to make the right decisions. The company serves professionals across legal, tax, audit, accounting, compliance, government, and media. Its products combine highly specialized software and insights to empower professionals with the data, intelligence, and solutions needed to make informed decisions, and to help institutions in their pursuit of justice, truth, and transparency. Reuters, part of Thomson Reuters, is a world-leading provider of trusted journalism and news. For more information, visit tr.com.