Tolley+™ Research

Find trusted tax answers fast, backed by unmatched depth, authoritative sources and expert insight you can stand behind.

When the answer matters, trust the source.

Get all the tax and accountancy intelligence your business needs with the largest reference library of its kind in the UK.

Tax research is not just about finding an answer. It is about finding the right authority, understanding the full picture and giving advice that can stand up to scrutiny.

Tolley+™ Research brings together an unrivalled depth of tax legislation, case law, HMRC material, expert commentary and news in one connected research experience. Explore more than 500 sources across UK and international tax, with coverage spanning over 100 jurisdictions and specialist titles including Simon’s and De Voil.

Unmatched depth. Unrivalled trust. Follow cross-linked content from legislation to commentary, cases and HMRC materials, so you can see how the sources connect—not just the first result that appears. Tolley sources are cited in court and Parliament and regularly used by HMRC, giving your team a stronger foundation for technical decisions and client advice.

Stay current with legislation available within 24 hours, supported by annotations and links to related commentary and HMRC guidance. Search naturally, refine precisely and use Starting Points to get up to speed on complex topics. See exactly what has changed in HMRC guidance with Tolley’s HMRC Manual Comparator, then save notes, organise sources and return to your research without starting again.

From an urgent client query to deep technical analysis, Tolley+ Research gives you the breadth to cover more, the depth to go further and the authority to advise with confidence.

Visit Tolley at the Digital Accountancy Show and discover the trusted research platform built for the questions that matter.