Koinly Review UK (2026): Pricing, HMRC Rules, Who It Suits

Koinly is a capable, well-established crypto tax platform that produces a UK-specific report and handles the messy end of crypto — DeFi, NFTs, margin trades and hundreds of wallets — better than most. It is the tool we point our own users to when their history goes beyond what our calculator supports. It is also a cloud service with per-year pricing that adds up if you need several back years, and for a straightforward exchange-only investor it is more than you need. This review covers what Koinly does, what it costs as published on 27 September 2026, how it deals with HMRC's rules, and when a simpler tool will do — for 2025/26 (return due 31 January 2027) and for catching up on earlier years.

What is Koinly?

Koinly is a web-based crypto tax and portfolio tracking service. You connect exchange accounts by read-only API key or upload their CSV exports, add wallet addresses so on-chain activity syncs automatically, and Koinly builds a full transaction history, works out your gains and income under your country's rules, and lets you download tax reports for each year once you buy a plan.

Its pricing page lists the headline features: exchange API sync, auto-sync for EVM chains plus Solana, Cardano and others, xPub import for bitcoin wallets, DeFi and NFT support, margin trades, smart transfer matching between your own wallets, tracking of mining, staking, lending and airdrops, fee tracking, bulk editing and rules, spam detection, 20,000-plus cryptocurrencies and "8+ years of historical spot prices". It offers specialised tax reports for the UK alongside the USA, Canada, Australia, Germany, Norway, Denmark and Sweden, and supports up to 100,000 transactions on regular accounts.

How much does Koinly cost in the UK?

Koinly charges per tax year, and the plan you need is set by the number of transactions in that year (and, for the current year, your account-wide total). Previewing your gains is free; you pay to download reports. On 27 September 2026 the pricing page showed these plans, displayed in US dollars from our server's location:

The pricing page's comparison table runs up to 10,000 transactions, and its FAQ says that if you exceed the top plan's limit you can buy additional transactions in the app, with regular accounts supporting up to 100,000 transactions. Koinly localises prices, so visitors from the UK should see pound figures; we could not verify the exact GBP amounts from where we checked, so look at the pricing page yourself before you buy.

Three things follow from the pricing model. Plans are sold per tax year, so if you need reports for several years — common for people responding to an HMRC letter — you buy a plan for each, and a five-year catch-up on the Hodler tier is five purchases. If you go over your plan's limit, Koinly says you can upgrade by paying the difference. And because you can generate and download unlimited reports for a year you have paid for, correcting mistakes does not cost extra.

Is there a Koinly promo code?

We do not publish or invent Koinly discount codes. Our only link to Koinly is our affiliate link, which gives you the standard price shown on Koinly's site. If Koinly runs a promotion, it appears on its own pricing page. Treat third-party sites listing "exclusive" codes with caution — many are expired or never existed.

Does Koinly apply HMRC's rules correctly?

Koinly's UK report uses share pooling — HMRC's section 104 pool with same-day and 30-day matching — rather than the FIFO or LIFO methods it offers for other countries. Crypto-to-crypto swaps are treated as disposals, transfers between your own wallets are matched and excluded, and staking, mining and lending rewards are recorded as income at their sterling value on receipt, which then becomes the cost of those tokens.

Two honest caveats. First, HMRC does not approve, recognise or endorse any crypto tax software, Koinly included; the calculation and the figures on your return are your responsibility. HMRC's disclosure guidance simply asks whether you used a "cryptoasset commercial calculator" and which one. Second, the quality of any result depends on the quality of the input: missing exchanges, unlabelled transfers or unrecognised transactions will produce wrong pools whichever tool you use. Koinly's negative balance warnings and error reconciliation tools help you find those gaps, but you still have to fix them.

We recommend checking a couple of disposals by hand against HMRC's own examples in the Cryptoassets Manual (CRYPTO22250 onwards) whichever software you use. Our section 104 pool guide shows how.

What is Koinly good at?

Breadth. If you have used a DeFi lending protocol, provided liquidity, traded NFTs, used a margin product or spread activity across many wallets and chains, Koinly can ingest most of it and give you something to work with. Manual approaches and narrower tools, including ours, cannot.

Automation. Read-only API keys and wallet addresses mean you are not hunting for CSV exports every January, and the portfolio view is useful year-round. Transfer matching between your own accounts is largely automatic, and the tax optimisation tools and capital gains preview let you see the position before the year ends.

Price history. Eight-plus years of historical prices matter for people reconstructing 2019/20 or 2020/21, where exchange exports may not include sterling values.

Where does Koinly fall short?

It is a cloud service, so your complete transaction history is uploaded and stored on Koinly's servers. That is standard for the category and Koinly connects to exchanges with read-only keys, but if you would rather not upload years of financial history, a tool that processes files locally is the alternative.

Per-year pricing gets expensive for multi-year catch-ups, and its plan tiers step up sharply: 1,001 transactions in a year puts you on the Trader tier. Exchanges that split one order into many fills can inflate counts, although Koinly says it groups those and excludes most spam and small reward transactions.

Its transparency is good but not total: you can see the gain on every transaction, but the per-disposal breakdown into same-day, 30-day and pool components — the thing HMRC's examples are built around — is less prominent than in a tool designed only for the UK. For a simple exchange-only year it is also more product than you need, and the free preview will tell you that quickly.

Who should use Koinly?

Koinly is the right choice if any of these apply:

• You have DeFi, NFT, margin or futures activity in the years you need to report.
• You have used many exchanges and wallets and want them to sync automatically.
• Your transaction count runs into the thousands.
• You want ongoing portfolio tracking, not just a once-a-year report.
• You need a tool that also handles another country's taxes.

If that is you, start with the free preview: import everything, check the balances reconcile, and only pay when you are ready to download the report for a given year.

When is a simpler tool enough?

If your crypto life happened on Coinbase, Kraken, Binance, Crypto.com or Revolut, with buys, sells and swaps but no DeFi or NFTs, you do not need wallet syncing or a cloud account. Our own calculator takes the exchange exports, applies HMRC's same-day, 30-day and pooling rules in your browser, shows the rule behind every disposal, and gives you the per-year numbers free. A Tax Year Report is £29 and the HMRC Letter Pack, which covers up to six years with a disclosure worksheet, is £59. Your files never leave your device.

That is not a claim to be better than Koinly. It is a narrower tool for a narrower job, and when our import detects DeFi, NFT or margin transactions, or an exchange we do not support, we say so and suggest Koinly.

Verdict

Koinly does what it says: it turns a sprawling crypto history into a UK tax report, and for complex portfolios it is one of the two tools (Recap being the other) we would recommend. Its costs are fair for what it does but climb with multiple years, and its cloud model is a trade-off some users will not want to make. For exchange-only investors, try a free estimate with a UK-specific calculator first and step up to Koinly only if you need its breadth. Whatever you use, remember that HMRC does not approve any calculator, and the return is yours.

If HMRC has written to you about crypto, our letter helper will work out which years you need to calculate before you choose any software.

Sources

• Koinly — Tax plans and pricing — checked 27 September 2026
• Check if you need to pay tax when you sell cryptoassets — GOV.UK
• CRYPTO22200 — Pooling — HMRC Cryptoassets Manual
• CRYPTO23000 — Valuation — HMRC Cryptoassets Manual
• Tell HMRC about unpaid tax on cryptoassets — GOV.UK
• Online affiliate marketing — ASA/CAP guidance