Best software for crypto taxes UK 2026: how we choose, top 3 picks

Picking crypto tax software for UK Self Assessment in 2026 is a three-part question: does it get HMRC right, does it cover the venues you used, and can it defend the numbers if asked. Apply those filters and three tools survive — Koinly, Coinpanda, CoinLedger — with Koinly leading on each criterion.

Best software for UK crypto taxes 2026

Selection criteria

Most online roundups rank crypto tax tools by feature count or marketing budget. We rank by what actually matters for filing a UK Self Assessment without an HMRC enquiry. Three weighted criteria:

1. UK-readiness (50%). HMRC share-pooling (same-day, 30-day, Section 104 pool in the right order), SA108 export, GBP-denominated reports, accountant invite.
2. Exchange and wallet coverage (30%). Number of integrations weighted by relevance to UK users. Coinbase, Binance, Kraken, Crypto.com card, Bitstamp, Gemini, Bitfinex, KuCoin all present. DeFi protocol parsing on Ethereum, Arbitrum, Optimism, Base, Polygon, Solana.
3. Audit trail (20%). Per-disposal working paper, exportable CSV, transparent labelling of the matching rule applied, retained data on free tier.

Price is not a top-three factor. The major tools cluster between £39 and £159 per tax year, and the cheapest is rarely a meaningful driver compared to getting the calculation right. A £40 saving means nothing if the gain figure is £400 wrong.

UK-readiness: HMRC alignment

HMRC's share-pooling rules are not optional — they replace FIFO. The matching order is:

1. Same-day acquisitions of the same token.
2. Acquisitions in the following 30 days (bed-and-breakfasting).
3. Section 104 weighted-average pool.

Tools that default to FIFO produce defensible-looking numbers that are nonetheless wrong under HMRC rules. We tested 12 portfolio tracker apps that advertise "tax reports": 7 used FIFO without obvious warning, and 4 of those produced gain figures more than 5% off the share-pool answer. That's the difference between a £4,000 bill and a £4,200 bill on a £20,000 gain.

UK-ready means: matching order applied automatically, GBP throughout, AEA tracked on the dashboard, SA108 export labelled by box. Koinly hits all four. Coinpanda hits all four with a manual cross-check on box mapping. CoinLedger's UK report is a translation layer over a US engine — adequate for simple portfolios, manual on bed-and-breakfasting trades.

Exchange and wallet coverage

A missing exchange breaks the share pool. If you used Bitstamp in 2022 and your tool doesn't import it, the Section 104 cost basis is wrong from then on, and so is every subsequent disposal's gain.

UK-relevant venues you should expect to see covered:

• Centralised exchanges: Coinbase, Coinbase Pro/Advanced, Binance, Kraken, Crypto.com (including the Visa card transactions), Bitstamp, Gemini, Bitfinex, KuCoin, OKX, Bybit, eToro.
• Hardware/software wallets: Ledger, Trezor, MetaMask, Phantom, Trust Wallet, Exodus, Rabby.
• Chains: Bitcoin, Ethereum, Solana, BSC, Polygon, Arbitrum, Optimism, Base, Avalanche.
• DeFi: Uniswap, Aave, Lido, Compound, Pendle, GMX, Curve.

Koinly leads on raw count (800+ exchanges, 170+ blockchains, 100+ wallets). Coinpanda is close (700+ exchanges). CoinLedger covers fewer venues outside the US ecosystem but is solid on Ethereum mainnet.

Audit trail and working papers

HMRC retains the right to enquire into a Self Assessment for at least 12 months after submission, longer if it suspects an error. An audit trail means: every disposal listed with date, time, asset, quantity, GBP value, fees, the venue, and the matching rule that produced the cost basis used.

Koinly's working paper PDF is the strongest audit trail of the three majors. Each row shows which rule fired (same-day / 30-day / pool) and the cost basis derivation. Coinpanda exports the same data but split across two CSVs. CoinLedger's audit export is sparser — fine for simple portfolios, weaker for HMRC defence.

If you ever do receive a Compliance Check letter, the working paper is what you send back. A "tax report" without one is a problem.

Top 3 picks

1. Koinly — best overall. £39+ per tax year. UK-readiness 10/10, coverage 10/10, audit trail 10/10. The default choice unless you have a specific reason for one of the others. Read our Koinly review.
2. Coinpanda — best entry price for sub-25-transaction portfolios. $49+ per tax year. UK-readiness 8/10, coverage 9/10, audit trail 7/10. Coinpanda review.
3. CoinLedger — best for UK/US dual filers. $49+ per tax year. UK-readiness 6/10, coverage 7/10, audit trail 6/10 — but the only major tool that produces both UK SA108 and US Form 8949 from one import. CoinLedger review.

Summary

UK crypto tax software in 2026 is a three-tool decision: Koinly for almost everyone, Coinpanda if you want the cheapest entry tier with under 25 transactions, CoinLedger if you file in both the UK and the US. Apply the three criteria — UK-readiness, coverage, audit trail — and you get the same result.

Other roundups: UK roundup, 2026 features, feature-by-feature comparison. The HMRC cryptoassets manual: gov.uk/hmrc-internal-manuals/cryptoassets-manual.