Free Chrome Extension · UK HMRC
Crypto tax done in
30 seconds
Drop your exchange CSV. Get your HMRC capital gains figure instantly.
No account. No upload. Everything runs locally in your browser.
Supported exchanges
CoinbaseBinanceBybitKrakenCrypto.com+ any CSV
How it works
1
Install the free extension from Chrome Web Store
2
Export CSV from your exchange (Coinbase, Binance, Bybit, Kraken, Crypto.com)
3
Drop the file into the extension — results appear instantly
🔒
Fully private
Runs 100% in your browser. We never see your data or keys.
⚡
Instant results
Upload CSV, get your HMRC capital gains figure in under 3 seconds.
📊
HMRC-accurate
All 3 matching rules: same-day, 30-day bed & breakfasting, Section 104 pool.
Pricing
Free
£0
✓ Capital gains calculation
✓ HMRC 3-rule matching
✓ Coinbase, Binance, Bybit, Kraken, Crypto.com
✓ Any CSV with column mapping
✓ On-screen summary
Add to ChromePopular
Premium
$20
one-time · no subscription
✓ Everything in Free
✓ PDF report for HMRC / accountant
✓ Tax loss harvesting analysis
✓ Merge CSVs from multiple exchanges
✓ Lifetime updates