United Kingdom · Tax year 2025/26

The quiet room between you and HMRC.

A private estimator that reads the year as an accountant would: income, allowable cost, the pound you keep, and the claim that is not worth the risk.

England, Wales, NI bands £15 Pro · not £150 a return No filing until the numbers earn it
Gryffin · Live bookOn track
Tax to reserve
£6,410
Adobe annual-£118 tax
Client rail fare-£36 tax
iPad · mixed useReview 70%
Self Assessment · Class 4 NIC · Capital Gains · Trading allowance · Receipt intelligence · What-if claims · Open Banking later · Self Assessment · Class 4 NIC · Capital Gains ·

Built like a practice.
Priced like software.

The difference is not another form. It is the sentence under each line: if you claim this, here is the cash, here is the risk.

01

Gold-leaf ledger

Turnover, expenses and gains sit in one private book. The reserve figure updates as you type.

02

Receipt intelligence Live

Photograph the slip. Merchant, VAT and a first-pass wholly-and-exclusively flag. You still decide. Free to try in the Studio right now.

03

The honest 20%

IR35, mixed-use kit, foreign income: we package the file for a human instead of faking certainty.

Stay under the accountant.
Never look cheap.

A sole trader in Britain often pays £600–£1,500 a year. Gryffin Tax is the room before that invoice.

Chamber
£0 /yr
  • Live income-tax estimate
  • Class 4 NIC + CGT sketch
  • Manual expenses
Open estimator
Studio Coming soon
£29 /mo
  • Open Banking import
  • Card-spend matching
  • MTD-ready books
  • Accountant handoff pack
See what's built so far

Pro's receipt capture, deduction radar and what-if panel are free to use in Studio today — Pro adds the billing, account and history layer around them, not new calculations.

In confidence

Is this tax advice?

No. Published HMRC rates, applied in software. Grey facts still belong with a qualified accountant.

Can I pay for Pro or Studio today?

Not yet — there's no billing or accounts yet, so nothing is locked behind payment. The Chamber estimator, and Studio's receipt scanner, deduction radar and what-if panel, are all free to use right now. Open Banking import and MTD filing are the genuinely unbuilt parts.

Will it file for me?

Not in this cut. First the estimate must be trusted. HMRC MTD comes after sandbox work.

Scotland?

Not yet. This release uses England, Wales and Northern Ireland bands.