Sync Your Portfolio
Connect from 800+ exchanges, wallets, and blockchains. API, CSV, or direct sync done in seconds.

Built for UK crypto investors. Compliant with HMRC rules.

No Credit Card Required

KoinX’s extensive integration with 800+ crypto exchanges makes calculating crypto taxes incredibly easy.
Connect from 800+ exchanges, wallets, and blockchains. API, CSV, or direct sync done in seconds.

KoinX auto-classifies every trade. Buy, sell, swap, staking, airdrops, DeFi, internal transfers and calculates gains automatically.

Get your Self Assessment report instantly. Pay only when you're ready to download. No surprises.

It takes under 10 minutes
Rated 4.5/5 by over 10.5k users
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Sync all your wallets & exchanges
✨ Processing
Plug in your wallets and exchanges. Watch your portfolio come alive.
800+ Integrations
Direct API and CSV support for Coinbase, Kraken, Crypto.com, Binance, Metamask, and institutional custodians.




Internal Transfer Detection


Multiple Inventory Methods
Auto-LabellingAuto-Labeling for Web3
Automatically identifies Staking rewards, Airdrops, Minting fees, and LP entries across 50+ chains including Ethereum, Solana, and Polygon.
We don't just "calculate" taxes. We solve for HMRC. KoinX is built with the specific logic required for Self Assessment and Capital Gains reporting.
Generate one-click reports ready for your accountant or Self Assessment filing

Our platform is packed with advanced features, including real-time market data, in-depth analysis, and reporting. It has also been cleverly designed to simplify and expediate the process of tax report generation.
Download Sample Reports
We never ask for your private keys. We only sync public data via read-only APIs.
Bank-level encryption and data privacy protocols to ensure your financial footprint remains confidential.
We use TLS for data in transit and AES-256 encryption at rest to keep your data secure and unreadable at every stage.
KoinX is a global crypto tax and accounting platform trusted by over 1.5 million users across 100+ countries. It automatically imports transaction data from exchanges, wallets, and blockchains, calculates your tax liability, and generates compliance-ready reports. It supports individual investors and tax professionals, with dedicated products for crypto tax filing, portfolio tracking, and accounting.
KoinX is certified under ISO 27001:2022 and SOC 2 Type II and is fully GDPR compliant, meaning your financial data is protected by enterprise-grade security standards. The platform connects to your exchanges via read-only API access and does not store your private keys or execute trades on your behalf. Your assets remain under your control at all times.
KoinX supports integrations with 800+ exchanges, wallets, and blockchains, including major platforms such as Coinbase, Kraken, Binance, Revolut, and Bybit, as well as hardware wallets and DeFi protocols. You can connect accounts via API or CSV import, and all transactions are automatically consolidated into a single HMRC-ready tax dashboard.
Yes. KoinX generates a Complete Tax Report specifically structured for UK users under HMRC rules. It includes an HMRC Capital Gains Summary, crypto income statement, derivatives income summary, asset-wise profit and loss, and beginning and end-of-year balances. The report is formatted for Self Assessment filing and can be shared directly with your accountant.
Yes. KoinX automatically applies Section 104 pooling when generating your UK tax report. Rather than tracking individual units separately, KoinX calculates an average cost per unit across all your holdings of each asset and applies this to every disposal. This ensures your capital gains calculations remain fully aligned with HMRC's required cost basis methodology.
Yes. KoinX automatically applies the 30-day rule when generating your UK tax report. If you sell a crypto asset and repurchase the same asset within 30 days, KoinX matches the sale to the repurchase price rather than the Section 104 pool. This ensures your cost basis calculations remain fully compliant with HMRC matching rules.
The KoinX UK Complete Tax Report is structured to support Self Assessment filing, specifically Form SA108 for reporting capital gains. The report provides all the figures required to complete both forms, including total disposal proceeds, allowable costs, net gains, and a full breakdown of crypto income events.
KoinX provides tax optimisation insights that help UK users make informed decisions about their crypto holdings. The platform highlights unrealised losses that can be harvested to offset taxable gains, tracks your Capital Gains Tax allowance usage, and gives you a clear picture of your total tax exposure before the end of each UK tax year.
HMRC treats cryptocurrency as property, not money or foreign currency. Gains from selling, swapping, or spending crypto are subject to capital gains tax, while crypto received through staking, mining, airdrops, or as payment is treated as income and subject to Income Tax. Both taxes can apply to the same asset at different points in time.
Each UK taxpayer has an annual Capital Gains Tax allowance of £3,000 for the 2025-26 tax year onwards. Only gains above this threshold are taxable. Gains falling within the basic rate band are taxed at 18%, while gains in the higher rate band are taxed at 24%, both calculated after applying the annual allowance.
Yes. Crypto capital losses can be offset against any other capital gains in the same tax year, including gains from shares or property. If losses exceed gains for the year, the unused amount can be carried forward indefinitely to reduce Capital Gains Tax in future years. Losses must be reported to HMRC within four years to remain valid.
Failure to report crypto to HMRC carries penalties based on the nature of the non-disclosure. Honest errors can be reviewed up to 4 years later, careless reporting up to 6 years, and deliberate concealment up to 20 years. Penalties, interest on unpaid tax, and potential criminal liability apply depending on the severity and intent of the case.
HMRC uses multiple methods to track crypto activity, including data sharing arrangements with UK and international exchanges, KYC records, and blockchain analysis tools. From 2026, under the Crypto-Asset Reporting Framework, exchanges operating in the UK must report user identities and transaction data directly to HMRC, making undisclosed crypto activity significantly harder to conceal.
Crypto income, including staking rewards, mining income, and airdrops received in exchange for a service, is taxed at standard UK income tax rates. The personal allowance of £12,570 applies first. Above that threshold, earnings are taxed at 20% under the basic rate, 40% under the higher rate, or 45% under the additional rate, based on total annual income.
No more spreadsheets. Just clean, HMRC ready reports in minutes.
