Our technology powers the professionals who are shaping the world. Meet the changemakers

Sign into your products
Sign in to manage account

Law firms

Corporations

Tax, audit & accounting firms

Government

Partnerships & alliances

AI for legal
Legal research & guidance
Legal forms
Business development
Legal data & document management
Business practice & procedure
Drafting software, service & guidance
Evidence
Trial readiness, process & case guidance

View all

Business & commercial law
Civil litigation
Criminal defense
Family law

Customer story

Justly Prudent achieves 5 times the ROI with CoCounsel

Learn how Justly Prudent used CoCounsel and Westlaw AI to achieve exceptional return on investment (ROI) — increasing litigation capacity by 100%.

Read case study

Draft, review & legal analysis
Legal research & advisory
Due diligence & compliance
Spend & matter management

View all

Cross-border trade
Periodic financial close
Tax, research & insights
Transactional compliance

View all

Collections & recovery
Continuous monitoring & fraud detection
Investigations
Onboarding due diligence & fraud prevention

View all

Intelligent compliance network
Chief financial officers and heads of tax
General counsel and chief legal officers
Chief risk officers

Customer story

AI that delivers

See how Brinks used CoCounsel to streamline legal work, cut outside counsel spend, and strengthen global operations.

Read case study

Tax workflow
Audit workflow
Professional development

Customer story

Speed meets confidence

Discover how Harris, Hardy & Johnstone reduced hour-long reviews into minutes with CoCounsel.

Read case study

Law enforcement

City attorneys
Courts
Prosecutors
Public defenders

Customer story

Streamlined matter management

See how the Pascua Yaqui Tribe used HighQ to transform legal matter management.

Read case study

About our Partnership program
Become a partner
Find a partner

Insights

Compliance without complexity

Learn how Oracle users consolidate compliance into one platform that reduces complexity while scaling tax and trade.

Read blog

Legal

Tax, audit & accounting

Global trade & supply

Risk & fraud

Books

CoCounsel Legal Integrate research, analysis, and drafting with professional-grade AI grounded in trusted Westlaw and Practical Law content.
Practical Law Deliver confident legal work with AI powered by more than 650 attorney-editors’ guides, templates, and checklists.
HighQ Accelerate legal delivery through secure collaboration, automated workflows, and AI-powered client engagement.
Legal Tracker Maximize legal efficiency while reducing annual spend through AI-powered matter management.

View all

Westlaw Advantage Move from research to strategy faster with agentic AI and comprehensive, verified Westlaw content.
Westlaw Edge Expedite complex legal research with AI tools that deliver precise, verified answers and strategic insights.

Featured

CoCounsel Legal

Complete legal work faster with AI that unites research, analysis, and drafting in one seamless experience.

Learn more

CoCounsel Audit Standardize audit workflows with AI-powered automation that delivers verifiable, citation-backed insights.
CoCounsel Tax Complete tax research and client deliverables faster using AI that centralizes trusted sources and firm data.
Guided Assurance Complete audit engagements efficiently and ensure compliance with automated software that identifies risks using AI.
Ready to Advise Turn client data into actionable tax strategies with AI that identifies opportunities and guides implementation.
Ready to Review Scale tax capacity with AI that automates 1040 return preparation and eliminates manual data-entry tasks.
SafeSend Scale tax capacity with AI that automates 1040 return preparation and eliminates manual data-entry tasks.

View all

CoCounsel Tax Complete tax research and client deliverables faster using AI that centralizes trusted sources and firm data.
ONESOURCE Determination Ensure accurate tax calculations across all systems with a certified, automated software for global indirect taxes.
ONESOURCE Income Tax File accurate corporate tax returns faster with trusted software for federal, state, and international compliance.
ONESOURCE Indirect Compliance Centralize indirect tax compliance with automated software for VAT, GST, and sales tax across all jurisdictions.
ONESOURCE Pagero Streamline e-invoicing compliance globally with integrated software that centralizes tax data and automates reporting.
ONESOURCE Tax Provision Expedite financial close with automated software that calculates tax estimates in seconds and streamlines reporting.

View all

Featured

CoCounsel Tax

Manage export compliance, screening, clearance, and documents in one workflow.

Learn more

ONESOURCE Foreign Trade Zone Management Maximize duty savings and improve cash flow with software that centralizes supply-chain data and automates compliance.
ONESOURCE Global Classification AI Automate trade compliance with an AI software that delivers fast, accurate product classifications for import and export.
ONESOURCE Global Trade Content Power global trade compliance with trusted content, rapid updates, and broad coverage.
ONESOURCE Denied Party Screening Minimize sanctions risk with automated denied-party screening across more than 750 global lists.
ONESOURCE Free Trade Agreement Management Reduce duties and simplify free-trade-agreement qualifications with less manual effort.
ONESOURCE Export Management Manage export compliance, screening, clearance, and documents in one workflow.

View all

Featured

Global Classification AI

Eliminate the complexity of global trade compliance with AI-powered Harmonized System (HS) code classification that's fast, accurate, and always audit ready.

Learn more

CLEAR Advance your investigations with trusted public-records technology that reveals critical connections in one platform.
CLEAR Investigate Surface critical connections faster with AI-driven research workflows integrated with premium public-records data.
CLEAR Adverse Media Screen for risky individuals and businesses with automated monitoring of adverse media across the globe.
CLEAR ID Confirm Verify identities faster with customizable software that delivers confidence scores across public-records data.
CLEAR Risk Inform Quickly identify risk with customizable assessment software that delivers calculated scores and adverse flags.
Fraud Detect Detect complex fraud schemes with machine-learning technology that delivers risk scoring and actionable insights.

View all

Featured

CLEAR Investigate

Surface critical connections faster with AI-driven research workflows integrated with premium public records data.

Learn more

Legal books by category
Legal books by jurisdiction
Shop all legal books
Tax books by brand
Tax books by organization
Tax books by practice area
Shop all tax books

Featured

Tax Quickfinder

Simplify tax research with quick-reference handbooks that deliver accurate answers in a concise, practical format.

Learn more

Law firms under 10 attorneys

Law firms over 10 attorneys

Corporations

Tax, audit & accounting firms

Government

Books

Westlaw Edge
Westlaw Edge with AI-Assisted Research
Westlaw Advantage
Westlaw Advantage with CoCounsel Essentials
CoCounsel Essentials
CoCounsel Legal
Practical Law
Practical Law Dynamic Tool Set with CoCounsel Essentials

Tailored solutions

Small firms

Discover legal research and drafting tools designed to help solo practitioners and small firms compete and scale efficiently.

Learn more

Contact us about plans for law firms Discover the right plan for your law firm with the help of a knowledgeable sales representative.

Featured

CoCounsel Legal

Complete legal work faster with AI that unites research, analysis, and drafting in one seamless experience.

Learn more

Westlaw Edge
Westlaw Advantage
CoCounsel Essentials
CoCounsel Legal
Practical Law
Practical Law Dynamic Tool Set with CoCounsel Essentials

Get started

Contact sales

Connect with our sales team to explore legal solutions tailored to your professional needs and business goals.

Contact us about plans for tax, audit & accounting firms Get expert guidance on tax, audit, and accounting solutions for your firm.

Featured

CoCounsel Tax

Manage export compliance, screening, clearance, and documents in one workflow.

Learn more

Westlaw Edge
CoCounsel Essentials
Practical Law

Get started

Contact sales

Connect with our sales team to explore legal solutions tailored to your professional needs and business goals.

Shop all legal books
Black's Law Dictionary
ProView e-books
Shop all tax books
Tax best sellers
Tax Quickfinder
Audit & accounting titles

Featured

ProView

Access your entire professional library anywhere, anytime with the only e-reader platform built from the ground up for legal and tax professionals.

Learn more

Insights

Events

Product training

Product communities

Developers

Thomson Reuters Institute Access expert research and trends that empower professionals to navigate industry transformation with confidence.
Innovation @ Thomson Reuters Learn how innovation powers the future of professional work through technology and strategic transformation.
Legal insights Explore thought leadership and practical insights that help legal professionals navigate industry changes.
Tax insights Navigate tax complexities with expert commentary, news, and analysis for accounting professionals nationwide.

Insights

Human intelligence

See how expert human intelligence shapes the AI that’s redefining legal work — and what that means for your practice.

Read blog

Upcoming events Connect with industry experts at events that provide actionable insights for legal and tax professionals.
On-demand webinars Access expert-led webinars on demand to learn practical strategies and insights at your convenience.

Webinar

Legal enhancements

Explore the latest CoCounsel Legal enhancements — smarter AI, deeper research, and new workflows built for the way you practice.

Legal learning hub Enhance product knowledge with on-demand training designed to improve skills and maximize software value.
Tax, audit & accounting professional services Achieve faster results with professional services that provide expert guidance and comprehensive product training.
On-demand learning Access flexible training modules that enhance product knowledge and accelerate professional productivity.
ONESOURCE University Maximize ONESOURCE value with comprehensive training that builds expertise and accelerates software proficiency.

Legal Connect with legal professionals worldwide to share insights, solve challenges, and discover best practices.
Tax, audit & accounting Engage with professionals to gain practical insights, ask questions, and build your tax and accounting network.
All communities Join Thomson Reuters professionals across industries to share expertise, solve challenges, and grow together.

Developer portal Access comprehensive APIs and developer tools that enable seamless integration with Thomson Reuters platforms.
API catalogue Explore a comprehensive API catalog with detailed documentation to integrate Thomson Reuters data and services.
Use case library Explore a comprehensive API catalog with detailed documentation to integrate Thomson Reuters data and services.
Developer community Collaborate with developer peers to troubleshoot issues, share best practices, and accelerate project success.

Help with account management
Help & support
Contact us

Report

2020 Q4 Peer Monitor Index (PMI)

2020 Q4 Peer Monitor Index

Thank you. Download your copy of the 2020 Q4 Peer Monitor Index report below.

Download report

About us

Learn more

Reuters

Core Publishing Solutions
- Book printing for publishers

Connect with us
- Facebook
- Instagram
- LinkedIn
- X
- YouTube

Thomson Reuters

Do not sell or share my personal information and limit the use of my sensitive personal information