Crypto tax that stands up to HMRC.
From capital gains and self assessment to enquiries and voluntary disclosures, we handle UK cryptocurrency tax with the precision it demands. Specialist accountants for holders, traders, and high net worth individuals.
> confidential / judgement free / every disposal accounted for
Specialist help across the whole crypto tax picture.
Whether you are filing for the first time or untangling several years of activity, we cover every stage with the same rigour.
Self Assessment & Capital Gains
Accurate CGT computations across every disposal, swap, and transfer, prepared and filed on time.
HMRC Enquiries
Calm, expert representation when HMRC comes knocking. We deal with them directly so you do not have to.
Voluntary Disclosures
Bringing historic crypto gains up to date through HMRC's Digital Disclosure Service, on the right terms.
Portfolio Reconciliation
Years of exchange and wallet activity turned into clean, defensible figures using Koinly and bespoke analysis.
Crypto Tax Planning
Structuring disposals, holdings, and gains efficiently and within the rules, before the tax year closes.
Full-Service Accountancy
Beyond crypto: corporation tax, VAT, payroll, and company accounts for businesses and individuals.
You are probably here for one of these reasons.
These are the situations clients arrive with most often. If one sounds like you, you are in the right place.
You've had an HMRC nudge letter
A letter has landed asking about your crypto. It is not a bill, but it is not nothing. We assess your real exposure, get your figures right, and respond properly before it escalates.
Years of activity, no clean records
Several exchanges, wallets, and DeFi, going back years, and nothing resembling a tidy record. We rebuild the whole history into figures that stand up to scrutiny.
Gains you never declared
Disposals in earlier years that never reached a tax return. We bring them up to date through HMRC's Digital Disclosure Service, on the best available terms.
A tax bill that looks terrifying
A headline gain that feels impossible. Once losses, allowable costs, and share pooling are applied correctly, the real figure is very often far smaller than you feared.
You want to get ahead of it
No letter yet, but you know CARF means HMRC will soon have your data. Coming forward first, cleanly, is the strongest position you can be in.
You just want it done right
You can afford to pay what you owe. You cannot afford to get it wrong. You want a genuine specialist who treats it with the seriousness it deserves.
You deal with Robin, not a call centre.
Robin Thatcher is the founder and Managing Director of By The Book Accountancy, and the specialist behind cryptotaxhelp.co.uk. He built the practice around one of the most misunderstood corners of UK tax: cryptocurrency.
A Bitcoiner himself, Robin understands these assets from the inside. He speaks on crypto tax at events including Bitcoin Prague, FAB.UK, and Competitive Advantage, and shares regular commentary as @bitcointaxuk.
Plain talk on where crypto tax is heading.
The rules are moving fast. Here is what actually matters right now.
CARF, and why "HMRC won't see it" is over
From January 2026, UK exchanges report your activity straight to HMRC. What that means if you have gains you have not yet declared.
Read →How a voluntary disclosure actually works
Coming forward before HMRC contacts you changes your penalty position. The Digital Disclosure Service, explained.
Read →Getting your position right before year end
Allowances, loss relief, and pooling can meaningfully change what you owe, but only if acted on in time.
Read →Let's get your crypto tax in order.
A short WhatsApp message describing your situation is the best first step. Confidential, and judgement free.