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    Tax research

    UK Tax Research AI

    Explore UK income tax, corporation tax, VAT and HMRC procedure with Cassandra. Build a research brief around the relevant tax year, transaction and devolved context.

    Tax researchUnited Kingdom

    A focused starting point
    for your next piece of work.

    Tax research for United Kingdom, covering legislation, regulatory guidance and practical questions.

    Use the workflow below to prepare the relevant facts and identify the parts of the output that need your review.

    Ways to use United Kingdom Tax

    • Research income tax, corporation tax and capital allowances for the relevant period.
    • Explore VAT and UK treaty questions for domestic or cross-border transactions.
    • Prepare an HMRC enquiry, clearance, disclosure or appeal research brief.

    What to bring to the conversation

    • UK nation, taxpayer type, tax year or accounting period, residence and transaction dates.
    • Relevant transaction, assessment, notice or event dates and the supporting documents.
    • The United Kingdom research question, other jurisdictions involved and the memo, comparison or action list your team needs.

    What to check before using the output

    • Check commencement dates, Finance Act changes and devolved tax differences.
    • Verify cited provisions, judgments, figures and effective dates against the sources for the matter.

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    AI outputs need independent verification. Engine access depends on your plan and current platform settings. Catalogue reviewed 19 October 2026.

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