Crypto Tax Return Filing UK
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:
- Transaction import & reconciliation
- Capital gains calculations
- Income event classification
- SA100 & SA108 filing
- Loss reporting for future offsets
From £495. Turnaround: 5 working days.
Estate and Succession Planning
For high-volume traders, NFT flippers, or DeFi users with up to 2,000 txs. Includes:
- 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
From £795. Turnaround: 7–10 working days.
High-Frequency Trader / Custom
Unlimited txs, bot-driven wallets, API integrations across multiple chains, including Arbitrum, Optimism, Avalanche, BSC, and Solana. Includes:
- 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
Quote on request. Full reconciliation in 14 days or less.
Filing Support / Audit Prep
Already filed but worried you got it wrong? We provide:
- Return audits
- Error detection
- HMRC communication on your behalf
- Amended filing if needed
From £250.
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:
- 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
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.
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.
FAQs
At Crypto Tax Accountant, we specialise exclusively in cryptocurrency tax services. Our experts are well-versed in the complexities of crypto tax regulations in the UK, ensuring your tax return is filed accurately and compliantly. We handle everything from calculating capital gains to managing staking rewards, ensuring a hassle-free experience for you.
If you’ve made any crypto transactions, whether through trading, mining, or receiving income, you’ll need to file a tax return. Our service is perfect for individuals, traders, or businesses dealing with crypto assets. We help you meet all HMRC requirements without the stress, making sure you stay compliant and avoid penalties.
To get started, all we need is a record of your crypto transactions, including buys, sells, and exchanges. Don’t worry if you’re not sure how to gather this information – our team will guide you every step of the way. We ensure your filing is accurate, no matter how complex your transaction history is.
Yes! We handle all types of crypto transactions, including trading, staking, mining, and even NFTs. Whether you’ve used multiple exchanges or have various wallets, we’ll manage it all. Our service is designed to cover the full range of crypto activities, ensuring that everything is reported correctly and in line with UK tax law.
Once we have all your necessary transaction data, we aim to complete your filing within a few weeks. We work efficiently to ensure that your tax return is filed on time, allowing you to focus on your crypto activities without worrying about deadlines or compliance issues.
Absolutely! If you’ve missed filing for previous years or believe there’s an error in a past return, we can assist with amendments. Our team will review your previous filings and make the necessary corrections, ensuring everything aligns with HMRC’s current crypto tax regulations.
Don’t worry if you’re missing some transaction details. Our team can help you track down the information you need from exchanges and wallets. We’ll guide you in gathering your data and ensuring everything is accounted for in your tax filing.
Yes, our service is designed for both individuals and businesses dealing with cryptocurrency. Whether you run a crypto-based business or accept payments in crypto, we can handle your tax filing with expertise. We cater to the specific needs of crypto businesses, ensuring that all reporting and compliance requirements are met.
Our team keeps up to date with the latest HMRC crypto tax regulations. We ensure that your tax return is filed in full compliance, avoiding penalties and ensuring accuracy. You can trust that we follow every regulation closely, so your filing is always correct and secure.
We are specialists in crypto tax returns, offering tailored services that ensure compliance, accuracy, and peace of mind. Our team takes the time to understand your specific crypto activities and provides a clear, efficient service. With us, you can be confident that your taxes are handled professionally and on time.
Simply reach out to us through our contact form or phone. We’ll schedule a consultation, review your crypto activity, and guide you through the steps needed to start your tax filing. We make the process as easy and transparent as possible.
We’ll handle the heavy lifting! We’ll just need you to provide transaction data, and we’ll take care of the calculations, tax forms, and filing. Throughout the process, we’ll keep you informed and ensure you understand every step.
Yes! Our focus is on accuracy and compliance, which means we make sure everything is filed correctly. With our expert team handling your return, you can rest easy knowing you’re avoiding penalties and fulfilling your tax obligations correctly.
Our pricing is transparent and based on the complexity of your crypto activities. Whether you have simple or complex returns, we offer competitive pricing. Reach out for a personalised quote based on your specific needs.
Yes, we offer ongoing support to ensure you remain compliant in future tax years. Whether you’re trading, mining, or staking, we’re here to assist with tax filings year after year, keeping everything in order so you don’t need to worry.
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.