Crypto tax software for HMRC — how to choose (UK 2025/26)
Quick answer: Choose software that applies HMRC share pooling, same-day and 30-day rules automatically and outputs SA108-ready totals. Popular UK-compatible options include Koinly, Recap and Coinpanda. HMRC does not endorse any tool — you remain responsible for your return. Review every figure before filing.
Calculating crypto tax by hand is painful with dozens of swaps. Software can help — but UK rules (Section 104 pooling, 30-day matching) differ from US tools that default to FIFO.
What good UK software must do
Import exchange and wallet history, classify transactions (buy, sell, swap, income), apply Section 104 pooling with same-day and 30-day matching, convert to sterling at transaction dates, separate income from capital gains, and export totals for SA108 boxes.
Koinly, Recap and Coinpanda
Koinly and Coinpanda are widely used in the UK with HMRC-oriented reports. Recap is UK-native. All require accurate API or CSV imports. Compare pricing per tax year if you only need one back year amended.
Limitations and manual review
Software misclassifies DeFi, internal transfers and wrapped tokens. Review ‘unknown’ transactions. HMRC may ask for your working — software output is not proof on its own.
Accountant vs DIY
DIY with software suits straightforward exchange trading. Complex DeFi, business trading or large undisclosed years may need an accountant. See our voluntary disclosure guide if catching up.
Frequently asked questions
Does HMRC accept Koinly reports directly?+
You enter totals on Self Assessment — attach workings only if HMRC asks.