Every UK crypto tax return must accurately declare income and capital gains from cryptocurrency trading, staking rewards, DeFi yields, NFT sales and prediction market trades. HMRC requires full disclosure of digital asset transactions, and failure to file a complete crypto tax return, including your prediction market activity, can result in penalties and interest. Whether you trade occasionally, farm DeFi yields, or take positions on Polymarket and other crypto prediction markets, our crypto tax return service ensures your income and capital gains are calculated correctly, reported accurately, and filed on time with HMRC.
HMRC Crypto Tax Return Expertise
Filing an accurate crypto tax return requires more than basic accounting knowledge. We calculate every capital gain, staking reward, airdrop, DeFi income event and prediction market trade using HMRC-compliant cost basis and pooling rules, ensuring your self assessment crypto tax return reflects your true tax liability. From first-time filers to clients with years of unreported transactions, including prediction market winnings and losses, our crypto tax return service applies the correct allowances, reliefs and exemptions so you don’t pay more than you owe.
How we Prepare your
Crypto Tax Return
Every UK crypto tax return starts with complete transaction reconciliation. We import data from every exchange, wallet, blockchain and prediction market platform you use, reconcile transfers, swaps, staking rewards, liquidity pool income and prediction market trades, and calculate accurate cost basis using specialist crypto tax software. Whether your portfolio spans Bitcoin, Ethereum, Solana, DeFi protocols or prediction market positions, we capture every taxable event and build a defensible crypto tax return that meets HMRC standards.
Why Myna for your
Crypto Tax Return?
We are specialist crypto tax return accountants with a proven track record filing UK crypto tax returns for traders, investors, family offices and businesses. Having completed hundreds of crypto tax returns across every major exchange, blockchain, DeFi protocol and prediction market, we understand how to handle complex transaction histories, cross-chain transfers, prediction market tax calculations, tax loss harvesting and HMRC disclosure requirements. We reconcile all your data, including your prediction market activity, calculate your full tax position, and submit your HMRC crypto tax return accurately and on time.