TaxButler

How it works

Our agentic system does the paperwork. Rules do the maths. You submit it.

TaxButler is our proprietary agentic tax system, led by humans in the loop. It combines three things: trained models that read and organise your documents in milliseconds, a tax engine that calculates using published HMRC rates, and validation against HMRC's rules before you submit.

  1. 1

    Tell us about your income

    A few quick questions. No account, no card, no UTR needed to start.

  2. 2

    We gather and calculate

    Enter your figures, or on a paid plan drop in documents. Our tax engine does the maths using published HMRC rates.

  3. 3

    See your return for free

    Every figure explained, with step-by-step instructions to submit it on HMRC yourself.

  4. 4

    Validate and submit

    On a paid plan we validate your return against HMRC's rules and you submit it to HMRC directly, in minutes.

What happens behind the scenes

  1. 01

    You upload or connect

  2. 02

    Our agentic system gathers and organises

  3. 03

    Tax rules calculate

  4. 04

    We validate

  5. 05

    You sign the declaration

  6. 06

    You submit to HMRC

Tax sorted. Without the usual bill.

Calculate for free. Validate and submit yourself from £79.

Calculate my tax for free