Bitcoin (BTC) — UK Wallet Tracker & Tax Calculator

Bitcoin is the original cryptocurrency. Track your BTC across 7 EVM chains + Solana, calculate your UK Capital Gains Tax, and discover your biggest fumbles — all free on CryptoLens.

BTC Price
£1.72K
Scan Your Wallet

See all your BTC holdings, value in GBP, and multi-chain breakdown in seconds.

Calculate UK Tax

Estimate your Capital Gains Tax on BTC disposals. HMRC 2025/26 rules applied.

Check Fumbles

Did you sell BTCtoo early? See what you'd have if you held to the ATH.

How to Track Bitcoin in the UK

CryptoLens is the UK's first free multi-chain crypto analytics platform. Just paste any Ethereum-compatible or Solana wallet address and we'll scan all 7 EVM chains (Ethereum, BSC, Polygon, Arbitrum, Optimism, Base, Avalanche) plus Solana to find your BTC holdings. No sign-up required — your portfolio value appears in GBP within seconds.

UK Capital Gains Tax on Bitcoin

HMRC treats BTC as a capital asset. Every time you sell, swap, or spend your Bitcoin, it's a taxable disposal. For the 2025/26 tax year, you have a £3,000 annual exempt amount. Gains above that are taxed at 10% for basic-rate taxpayers and 20% for higher-rate taxpayers. CryptoLens scans your on-chain history to calculate your exact liability using Section 104 pooling, with an optional HMRC-ready PDF export for Pro members.

Bitcoin Fumble Checker

The Fumble Checker analyses your wallet for any BTCyou sold before it reached its all-time high. It compares your sell transactions against ATH prices and shows you the profit you left on the table. Share your fumble score on Twitter/X to compare with friends — it's become one of our most viral features.

Frequently Asked Questions

How do I track my Bitcoin (BTC) holdings?▾
Paste your wallet address into the CryptoLens scanner. It automatically detects BTC across all major EVM chains (Ethereum, BSC, Polygon, Arbitrum, Optimism, Base, Avalanche) plus Solana, showing your total balance and current value in GBP.
Do I need to pay UK tax on Bitcoin?▾
In the UK, you may owe Capital Gains Tax when you sell, swap, or spend BTC. HMRC treats crypto as property. You get a £3,000 annual exempt amount (2025/26). CryptoLens calculates your exact liability using on-chain data.
What is a Bitcoin fumble?▾
A fumble is when you sold BTC before it hit its all-time high. CryptoLens compares your historical sells against ATH prices to show you exactly how much you missed out on — painful but fun.
Is CryptoLens free for Bitcoin tracking?▾
Yes. Wallet scanning, portfolio tracking, fumble checking, and basic tax estimates are all free. Pro members (£19.99/mo) get HMRC-ready PDF/CSV tax reports, price alerts, and priority API access.

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Data sourced from public blockchain networks. Not financial advice. Always consult a qualified tax professional.