UK crypto tax specialists
Crypto Tax Return Filing UK
We file your crypto tax return with full CGT reports, staking income, and HMRC-ready docs. 500+ UK returns submitted.
- HMRC Cryptoasset Manual applied line by line
- Timestamped pricing feeds for every valuation
- Pooling and the 30-day rule handled correctly
Avoid Fines. Keep HMRC Off Your Back. File Your UK Crypto Tax Return The Right Way—The First Time.You made gains. Maybe on-chain. Maybe off. Maybe you held for years. Maybe you were in and out of tokens faster than bots on Uniswap. Now it’s tax season, and you’re staring at a spreadsheet of wallet addresses, CEX exports, and MetaMask chaos… with HMRC expecting a tidy CGT summary and SA100 by deadline.We’re a UK-based crypto tax filing service that sorts this mess for you—line by line, wallet by wallet, tx by taxes—turning your unstructured crypto activity into a clean, HMRC-compliant tax return.At Crypto Tax Accountants We’ve handled portfolios with 10,000+ txs, tracked staking rewards across 8 chains, fixed mismatched cost bases, and helped clients report DeFi losses properly to offset gains. Nothing surprises us anymore.
What We File (And How)
Traditional accountants don’t know what to do with a CSV full of tx hashes, LP token events, wrapped assets, or on-chain bridges. And they shouldn’t. That’s not their world.We’ve submitted over 500+ UK crypto tax returns. We’ve dealt with everything from rug pulls to DAO compensation plans to ETH staking withdrawals. This isn’t new to us. We know how to apply HMRC’s crypto asset manual, handle Section 104 CGT pooling, and prepare audit-ready tax files that hold up under scrutiny.
Wallet & Exchange Data Extraction
We pull transaction histories from all major exchanges (Binance, Coinbase, Kraken, KuCoin, etc.) and wallets (MetaMask, Ledger, Trust Wallet). API integrations or raw CSVs—we handle both.
On-Chain Reconciliation
We normalise token names, fix duplicate txs, trace bridging, LP adds/removes, staking events, and token swaps. Every tx is valued in GBP at time of transaction using reliable pricing sources.
Capital Gains Tax (CGT) Calculation
We calculate gains/losses for every disposal using HMRC-approved Section 104 share pooling rules. Partial disposals? We match correctly. CGT exemption? Applied where relevant.
Income Reporting
We identify and classify all income events (airdrops, staking rewards, referral commissions, mining payouts) under miscellaneous income. We distinguish between income and capital disposals to prevent misfiling.
Filing & Submission
We generate your full SA100 and CGT supplemental pages (SA108). We file via HMRC’s official channels and provide PDF copies of every report. You get a complete audit trail.
Our Services
We don’t guess. We run the data. We align it to tax law. And we file it with confidence.
Standard Crypto Tax Return
For individuals with under 500 txs and up to 3 wallets/exchanges. Includes:From £495. Turnaround: 5 working days.
- Transaction import & reconciliation
- Capital gains calculations
- Income event classification
- SA100 & SA108 filing
- Loss reporting for future offsets
Estate and Succession Planning
For high-volume traders, NFT flippers, or DeFi users with up to 2,000 txs. Includes:From £795. Turnaround: 7–10 working days.
- All features of Standard return
- NFT disposal tracking
- LP token reconciliation
- Bridged asset matching
- Custom logic for wrapped tokens
- Support for multiple wallets and blockchains
High-Frequency Trader / Custom
Unlimited txs, bot-driven wallets, API integrations across multiple chains, including Arbitrum, Optimism, Avalanche, BSC, and Solana. Includes:Quote on request. Full reconciliation in 14 days or less.
- Tax lot tracking (FIFO vs pooling review)
- DeFi protocol-specific tagging
- DAO activity logging
- ETH2 staking withdrawal breakdown
- Detailed cost basis remapping for lost price feeds
Filing Support / Audit Prep
Already filed but worried you got it wrong? We provide:From £250.
- Return audits
- Error detection
- HMRC communication on your behalf
- Amended filing if needed
How Our Service Solves Your Crypto Tax Mess
If you’re trying to file your UK tax return with crypto activity involved, you're staring down a few common walls:We solve that by getting granular. Every tax was reconciled. Every value timestamped. Every disposal linked to its acquisition. We use a mix of software (Koinly, Accounting, our own tools) and human QA to make sure nothing gets misreported. That means less tax if losses are valid and lower audit risk because your report actually makes sense.
- Exchange records that don’t match wallet activity
- Missing fiat on/off ramp records
- Staking rewards and airdrops you didn’t know were taxable
- HMRC deadlines and penalties looming
- Fear of under-reporting and triggering an investigation
Common Client Scenarios
Over 70% of our clients either underreported or misfiled crypto in previous years. We fixed it.
The Day Trader
You used KuCoin, Bybit, and Binance last year. Thousands of trades. Most of them are crypto-to-crypto. You didn’t cash out. You think you owe nothing.Wrong. Every swap is a disposal. We track them, apply share pooling, calculate the net gains, and log your losses to reduce liability.
The NFT Seller
You sold 20+ NFTs, some on OpenSea, others on Blur. Your accountant said NFTs aren’t taxable.Wrong again. HMRC treats them as property assets. We apply CGT, offset costs, and apply negligible value claims to rug pulls so you claim the loss.
The DeFi Power User
You’ve got funds spread across Lido, Curve, Arbitrum, and CEXs. Bridged assets, LP tokens, wrapped ETH, staking rewards. You have no clue how to track the cost basis.We do. We reconcile multi-chain txs, timestamp every action in GBP, match bridging flows, and prevent double-reporting across protocols.
Get Your Crypto Tax Filing Quote Now
If your gut telling you this tax season is going to be a problem, it probably already is. The further you delay, the more complicated your portfolio gets and the less time we have to fix it properly. Let’s get this filed—accurately, legally, and with no late fees. We handle the complexity so you don’t overpay or get flagged by HMRC. Fill out the quote form. We’ll take it from there.
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Book your free crypto tax review
Let's find out what you actually owe — not what you think you might. A 30-minute call is usually all it takes.
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Get a fixed quote for crypto tax return filing uk
Tell us which exchanges and wallets you use and roughly how many transactions you have. We'll come back with a fixed fee and a realistic timeline.
- HMRC Cryptoasset Manual applied line by line
- Timestamped pricing feeds for every valuation
- Pooling and the 30-day rule handled correctly