CoCounsel Tax

Most AI research tools pull from publicly available sources and leave the practitioner to verify against primary authority. CoCounsel Tax works differently: it queries the full Thomson Reuters Checkpoint library directly, covering the Internal Revenue Code, Treasury regulations, IRS rulings and notices, federal case law, and expert-written commentary, and serves small and mid-sized accounting firms through a conversational interface. Each answer is sourced and links back to the primary authority so the reasoning is traceable and defensible.

Typical research tasks include checking the current rules on a deduction, summarising recent IRS guidance, or comparing treatment across states. The assistant handles follow-up questions in context, so a multi-step research path does not require restarting from scratch. Drafting support covers memo outlines and client-communication summaries built from the sources it retrieves.

CoCounsel Tax is available to existing Checkpoint subscribers and as part of broader Thomson Reuters Professional tier packages. It is most useful for small to mid-sized accounting firms that rely on Checkpoint for primary source research and want to reduce the time spent reading through dense regulatory text.

For firms already in the Thomson Reuters stack, CoCounsel Tax sits naturally alongside existing Checkpoint workflows. Cited answers link directly to the source pages your team already knows. Firms without a Checkpoint subscription cannot access it, which is the main practical limitation.

The closest alternative is Blue J, which covers similar jurisdictions but operates independently with its own source library. The choice usually comes down to whether your firm is committed to the Thomson Reuters ecosystem or prefers a standalone tool.

Pricing is bundled with Checkpoint subscriptions and is not published publicly. Firms need to contact Thomson Reuters to understand licensing costs, which depend on the number of users and the existing Checkpoint subscription level.