Using the wrong crypto tax calculator could cost you more than you think
If you own crypto, calculating your tax isn’t simply a matter of subtracting what you paid from what you sold.
Your tax position depends on your complete transaction history, including transfers between wallets, token swaps, staking rewards and airdrops.
Generic tax calculators and manual spreadsheets may not reconstruct this history correctly, increasing the risk of reporting inaccurate figures in your tax return.

From crypto transactions to tax-ready figures
Connect your exchanges, wallets and blockchain addresses. Finbooks imports your transactions, reconstructs your complete tax history and applies the relevant HMRC rules.
It calculates your capital gains, losses and crypto income, then generates pre-filled tax reports and supporting documentation for your Self Assessment.

Turn scattered transactions into clear, compliant crypto tax reports
- 1
Bring your crypto together
Connect all your exchanges and wallets. Finbooks brings your fragmented activity into one tax position.
- 2
Check and reconstruct your data
Finbooks identifies missing movements, reconciles transfers between your accounts and helps resolve inconsistencies before they affect your tax calculations.
- 3
Get accurate calculations that follow HMRC rules
Once your data is ready, Finbooks applies the relevant UK tax treatment to calculate capital gains, losses and taxable crypto income.
- 4
Generate your Self Assessment reports
Turn your calculations into pre-filled tax reports, supporting documentation and filing guidance you can use yourself or share with your tax adviser.
Import data from anywhere
Finbooks integrates 600+ sources across brokers, trading accounts, banks, wallets and crypto exchanges. Secure, read-only connections.

| Spreadsheet | Generic crypto tax software | Finbooks | |
|---|---|---|---|
| Import multiple exchanges & wallets | Manual | ✓ | ✓ |
| Detect missing or inconsistent data | ✗ | Limited | ✓ |
| Identify internal transfers | Manual | Limited | ✓ |
| Apply UK tax rules | Manual | ✗ | ✓ |
| Calculate capital gains & losses | Manual | ✓ | ✓ |
| Calculate crypto income | Manual | ✓ | ✓ |
| Pre-filled reports for Self Assessment | ✗ | ✗ | ✓ |
| Detailed supporting calculations | ✗ | ✗ | ✓ |
Already paid for another crypto tax software?
Switch to Finbooks at no cost.
If you've already purchased another software to declare your investments, Finbooks currently offers to refund 100% of that software's cost after you activate a Finbooks plan and provide proof of purchase.


