HMRC Crypto Tax Record Keeping in the UK: What Clients Must Track (and Why It Matters)

A practical record-keeping guide for UK crypto holders: what HMRC expects, what evidence is useful, and how professionals can prevent chaos later.

Introduction

[Back to Insights](/insights) UK crypto tax outcomes often fail for one simple reason: poor records. Clients trade across multiple platforms, move assets between wallets, and lose track of dates, values, and fees. When HMRC asks questions, missing evidence becomes expensive and stressful. This guide summarises what to track, how to organise it, and why it also improves inheritance readiness. Non-custodial coordination. Not financial advice.

What HMRC expects in practice

HMRC guidance emphasises keeping records of cryptoasset transactions. In practical terms, clients should track: - Dates of transactions - Type of cryptoasset and quantity - Value in GBP at the time of the transaction - Wallet addresses where relevant - Fees paid and the purpose of the transaction - Records of exchanges and platforms used

A professional-friendly minimum viable crypto record pack

1) A single ledger (spreadsheet is fine) One place that lists every movement with date, time and GBP value. 2) Evidence folder Exports from exchanges, confirmations, and any relevant statements. 3) A platform map Which exchanges, which wallets, which devices. This doubles as a continuity asset for executors, without revealing keys.

Why this matters for inheritance as well as tax

When a person dies or loses capacity, families must identify what exists before they can value or recover it. If the record pack is missing, probate becomes slower and families become targets. See also: /executor-crypto-checklist and /inheritance

Security note: never store secrets in your records

Records should not contain seed phrases, private keys, or passwords. If those are embedded in documents, the records become a theft target. See also: /insights/seed-phrase-storage-best-practices-uk

Where Bitzo fits

Bitzo coordinates documentation and verification workflows without taking custody of assets.

Next steps

If clients hold crypto, make record keeping part of the continuity plan. - Adviser programme: /advisers - Book a call: /book - Security overview: /security [Back to Insights](/insights)