Section 104 pooling— HMRC's exact method
FIFO— with precise lot tracking and partial lot consumption
UK CGT allowance— £3,000 correctly applied
UK CGT rates— 24% higher rate
US long‑term vs short‑term— 15% / 37% split
Holding days— calculated per disposal, long_term flag at 365 days
Tax year bounds— UK April 6th, US Jan 1st, automatic detection
Historical prices— CoinGecko at exact disposal date (what HMRC requires)
Unrealised gains/losses— live portfolio position
Tax loss harvesting opportunities— identifies which lots to sell to offset gains
Fallback price tracking— audit trail noting where data came from
Mempool pagination— full transaction history, not just last 25
Simple, transparent pricing
Pay with Stripe — instant access to the full engine
Basic Access
£10
- ✅ Full core engine
- ✅ Section 104 / FIFO
- ✅ Historical prices + fallback
- ✅ UK & US tax logic
- ✅ Mempool pagination (up to 500 txs)
Professional
£99
- ✅ Everything in Basic
- ✅ Advanced reports (8949 / HMRC pages)
- ✅ Tax loss harvesting suggestions
- ✅ Unrealised gains dashboard
- ✅ OpenAccountants sync & audit packet