CryptoTax UK · Guide
Trezor Wallet Tax UK — HMRC Guide for 2025/26
Trezor is a popular hardware wallet for self-custody of crypto assets. This guide explains how UK tax rules apply to Trezor transactions and how to build a complete history for your HMRC Self Assessment. Educational only — not tax advice.
Calculate my Trezor wallet tax →Trezor transactions and UK tax
Holding crypto in a Trezor is not a taxable event. Disposals — selling, swapping, spending or gifting crypto from your Trezor — are subject to Capital Gains Tax in the usual way. The wallet type is irrelevant; HMRC taxes the underlying economic event.
Exporting your Trezor history
Trezor Suite allows you to export transaction history per account as a CSV. Go to Trezor Suite > select account > Transactions > Export. For DeFi interactions, use block explorers such as Etherscan or Blockchain.com.
Combining Trezor and exchange records
Many Trezor users also use centralised exchanges to buy crypto before moving it to cold storage. Always keep the original exchange purchase records — they establish the acquisition cost you will need when you eventually dispose of those assets.
Frequently asked questions
If I swap coins using Trezor Suite's built-in exchange, is that taxable?
Yes — using Trezor Suite's built-in swap feature exchanges one crypto for another, which is a disposal of the first asset for CGT purposes.
How do I track the cost basis for crypto held in Trezor for years?
Your cost basis is the GBP value at the time of the original acquisition — typically when you bought on an exchange. Retrieve the original exchange record to find this.
Can CryptoTax UK import Trezor exports?
Yes — upload your Trezor Suite CSVs via Import CSV (Premium) and CryptoTax UK will apply HMRC's matching rules and calculate your gain or loss per disposal.
More UK crypto-tax guides
Ready to estimate your UK crypto tax?
Free calculator. No sign-up needed.
Calculate my Trezor wallet tax →Educational guidance only. CryptoTax UK is not a regulated tax adviser and the information above does not constitute tax, legal or financial advice. Always confirm your specific position with HMRC or a qualified accountant before filing.