What it is
Practical Law is Thomson Reuters’ know-how library: practice notes, standard documents and clauses with drafting notes, checklists, toolkits and Q&As written and maintained by in-house attorney-editors. Thomson Reuters states 650+ full-time attorney-editors and 118,000+ resources across 17 practice areas. It is not a case-law database — that is Westlaw — and it is not an AI assistant on its own. It is the editorial content that tells a lawyer how a transaction or process is usually done, and what the standard document for it looks like. Thomson Reuters bought the Practical Law Company in 2013.
Its AI layer has arrived in stages. Ask Practical Law AI (question answering over Practical Law content) and Clause Finder (a Word add-in that searches clause language across Practical Law, SEC agreements and your own documents) launched in January 2024 as add-ons. Deep Research on Practical Law entered beta in October 2025 and shipped in the UK in January 2026. The bigger change is that Practical Law is now the grounding layer for CoCounsel drafting: the rebuilt CoCounsel Legal, generally available in the US on 20 August 2026, includes a Drafting Agent in CoCounsel for Word that drafts, edits and reviews agreements using Practical Law content alongside your own documents and playbooks, plus Deep Research Verify, which checks whether cited Westlaw and Practical Law authority supports a specific assertion.
This page covers the know-how and drafting product. Case-law research is covered on Westlaw Advantage; the AI assistant itself on the CoCounsel page.
Why it shows up in legal-ops stacks
- It is the first draft’s starting point. For a transactional or in-house team, a maintained standard document with drafting notes replaces the “find the last deal we did” search, and the drafting notes explain which clauses are negotiable.
- It is what makes CoCounsel’s drafting defensible. The Drafting Agent and Brief Builder cite Practical Law resources rather than an unattributed model answer, which is the property a general-purpose model in Word does not have.
- It reaches Claude. The expanded CoCounsel Legal MCP connection with Claude, announced in August 2026, returns work product grounded in Westlaw, Practical Law and the organization’s own knowledge. Practical Law itself has no public API.
Pricing reality
Thomson Reuters publishes no Practical Law prices online — the plans page directs buyers to sales, says online pricing is for new customers only, offers a 7-day trial on Premium, and says multi-year terms cost less. Third-party listings give the band: G2 (March 2026) shows about $154/month for the law-firm edition, $95/month for government and $252/month for general counsel; Software Advice lists higher law-firm tiers at roughly $279, $430 and $496/month for drafting, premium and multi-practice premium plans. Treat those as entry anchors for small firms, not quotes.
The answer to “do we still need a standalone subscription?” is in the packaging. Practical Law now ships three ways: on its own; as Practical Law Dynamic Tool Set with CoCounsel Essentials (firms of 1-10 attorneys); and inside the top CoCounsel Legal plan, which includes Westlaw Advantage, the Practical Law Dynamic Tool Set and CoCounsel Essentials. If you are buying CoCounsel Legal, a separate Practical Law line is a duplicate. If you only need research, it is not in the Westlaw plan at all.
Best for
A transactional, corporate or in-house team of any size that drafts from standard documents and wants AI drafting grounded in maintained precedent — especially a team already on Westlaw, where the CoCounsel Legal bundle is the cheapest way to get both. Not for a litigation-only firm whose need is case law (buy Westlaw), and not for a team with a mature internal precedent bank and knowledge lawyers who only want AI over their own documents.
Versus the alternatives
Lexis Practical Guidance is the direct substitute and the second incumbent: pick it when LexisNexis Protégé and Shepard’s are already the firm’s platform, because Protégé grounds its answers in Practical Guidance the way CoCounsel grounds in Practical Law, and running two know-how libraries is pure duplication. Bloomberg Law Practical Guidance is the pick for a deal team that values Draft Analyzer’s comparison of a draft against EDGAR filings for market-standard language. Legora is the fastest-growing entrant; pick it when the precedent that matters is your own and the priority is lawyers drafting together with AI on firm documents, not licensed know-how. For template assembly rather than guidance, Avvoka automates your own documents.
If none fit — a small team that drafts a handful of agreement types — a bar-association form library plus Spellbook in Word costs a fraction of a Thomson Reuters contract.
Watch-outs
- You can end up paying for it twice. Practical Law sits in three SKUs, and firms that added CoCounsel Legal often still renew the standalone subscription. Guard: before renewal, list every Thomson Reuters line item and the Practical Law entitlement each includes, and ask for the standalone line to be removed in writing.
- The AI features are on different clocks by country. The rebuilt CoCounsel Legal is US-only, with Canada, the UK and Australia expected later in 2026; Deep Research on Practical Law reached the UK first. Guard: confirm in the order form which features are live in each jurisdiction your lawyers work in, not which ones were in the demo.
- Guidance is secondary authority. A practice note summarizes the law as of its last update; it does not replace checking the primary source. Guard: run anything that will go to a client through Deep Research Verify or KeyCite, and check the resource’s maintained-date before relying on it.
- Clause Finder and Ask Practical Law AI were sold as add-ons. Older contracts may not include them. Guard: map each AI feature to the plan it ships in before assuming the team has it.