Bitcoin explained for UK holders
Quick answer: Bitcoin (BTC) is a fungible cryptoasset. UK tax rules treat disposals as potentially liable to CGT. Buy through FCA-registered firms, keep records, and understand that FSCS does not protect your holdings.
Bitcoin is the first widely adopted cryptoasset — a decentralised digital token recorded on a public blockchain. In the UK it is treated as property for tax purposes and is not legal tender.
What bitcoin is
Bitcoin runs on a peer-to-peer network without a central issuer. Transactions are recorded on a public ledger (the blockchain) and secured by cryptography. Units are divisible to eight decimal places (satoshis).
UK tax treatment
HMRC classifies bitcoin as an exchange token — a type of cryptoasset. Buying, selling, swapping or spending BTC can trigger CGT. Receiving BTC as payment for work triggers Income Tax and National Insurance in the usual way.
Regulation and risk
Retail spot bitcoin trading is not fully regulated as an investment product, but AML registration and financial promotions rules apply to UK-facing firms. The FCA considers crypto high-risk; prices are volatile.
Frequently asked questions
Is bitcoin legal in the UK?+
Yes. Holding and trading bitcoin is legal subject to tax and regulatory compliance.