HMRC crypto guidance·25 guides · updated 5 May 2026

UK crypto tax,
explained plainly.

Practical, no-nonsense guides to how HMRC taxes crypto — from exchange trades to liquidity pools, airdrops, and bridges. Written by people who actually use these tools.

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Latest guide

Getting started

Year-End Crypto Tax Planning UK: What to Do Before 5 April

£3,000 AEA resets on 6 April. The HMRC-correct year-end playbook: realising losses, the 30-day B&B trap, same-day consolidation, and what SA108 expects.

HMRCCGTSection 104Capital Losses
13 min readRead guide
01

Getting started

The HMRC rules, thresholds, and forms every UK investor needs to understand first.

8 guides
Getting started

SA108 Crypto 2024/25: Boxes 13.1-13.8 Explained

2024/25 adds crypto boxes to SA108 and split-year CGT rates. See every box, worked examples, and the Box 51 adjustment too.

14 min readRead
Getting started

Do I Need to Report Crypto to HMRC? The Complete Checklist

Sold, swapped, staked, or earned crypto? Learn when HMRC requires a Self Assessment return, what triggers reporting, and DeFi thresholds.

11 min readRead
Getting started

Same-Day & 30-Day B&B Rules: How HMRC Matches Crypto Sales

When you sell crypto, HMRC matches same-day buys first, then 30-day, then your Section 104 pool. Worked examples and the loss-harvesting trap that breaks the rules.

9 min readRead
Getting started

CARF 2026: What UK Crypto Investors Need to Know

From 2026, around 50 UK platforms report crypto data to HMRC under CARF. Learn what they report, why DeFi is the gap, and what to do now.

9 min readRead
Getting started

Are Crypto Losses Tax Deductible UK? HMRC Rules + How to Claim

Yes — crypto losses are tax deductible in the UK, but HMRC won't apply them automatically. Learn how to claim, carry forward and avoid the 30-day B&B trap.

11 min readRead
Getting started

Section 104 Pool Explained: HMRC's Crypto Cost-Basis Rule

HMRC pools your crypto into one Section 104 average cost — not FIFO like Coinbase. Worked ETH example, same-day rule, 30-day B&B, and the trap Koinly misses.

11 min readRead
Getting started

UK Crypto Tax 2024/25 Guide: SA108, £3K, Split-Year CGT

Your 2024/25 return needs SA108 boxes 13.1–13.8, the 30 Oct 18%/24% CGT split, and the £3,000 exemption. Step-by-step guide for UK crypto investors.

14 min readRead
Getting started

HMRC Crypto Warning Letters: What to Do Next

HMRC has sent over 100,000 crypto warning letters since 2020, and CARF adds exchange reporting. Learn what changed and what to do next.

8 min readRead
02

Exchange guides

Filing when you trade on Coinbase, Binance, or Kraken — and why their reports don’t satisfy HMRC.

4 guides
03

DeFi & advanced

LPs, bridges, staking, airdrops, NFTs — the cases where most crypto tax tools quietly fail.

11 guides
DeFi & advanced

DeFi NGNL Tax UK: HMRC's No Gain/No Loss Regime

HMRC's planned NGNL DeFi regime changes lending, borrowing and LP tax. What the consultation covers, what it excludes, and what to do now.

11 min readRead
DeFi & advanced

Crypto Airdrops Tax UK: When HMRC Taxes Free Tokens

Most tools treat airdrops as zero-cost tokens, overstating gains later. Here's how HMRC taxes crypto airdrops and why cost basis matters.

10 min readRead
DeFi & advanced

DeFi Income vs Capital Gains UK: HMRC Tax Guide

Staking rewards are income, swaps are capital gains, and Aave deposits are different again. Learn the UK tax treatment before you file.

12 min readRead
DeFi & advanced

NFT Taxes UK: HMRC Rules for Buying, Selling and Minting

NFT taxes in the UK aren't intuitive. Buying with crypto is a disposal, selling is a disposal of the NFT, minting is an acquisition. Worked examples for HMRC.

10 min readRead
DeFi & advanced

How HMRC Taxes DeFi Token Swaps (Uniswap, 1inch, Curve)

Every token-to-token swap is a CGT disposal, even without fiat. Learn how HMRC taxes DEX swaps, routing and stablecoin trades.

11 min readRead
DeFi & advanced

Aave Lending Tax UK: HMRC Rules for DeFi Lending

Most Aave actions are not disposals, but wrong sorting can create tax you do not owe. Learn HMRC treatment for supply, borrow, repay and interest.

10 min readRead
DeFi & advanced

Curve Finance Tax UK: CRV Rewards, Swaps and LPs

Curve rewards are income, not capital gains. Learn how HMRC taxes CRV claims, stablecoin swaps, LP deposits, veCRV locks and admin fees.

9 min readRead
DeFi & advanced

Wrapped Tokens Tax UK: WETH, wstETH, rETH and cbETH

Is wrapping ETH to WETH taxable? What about stETH to wstETH or rETH? Learn when HMRC sees a representation change or a token swap.

9 min readRead
DeFi & advanced

Is Bridging Crypto Taxable in the UK? HMRC's Carryover Rule

Bridging crypto is usually not a taxable disposal under HMRC rules — cost basis carries across chains. Learn when it counts and why some tools overstate gains.

10 min readRead
DeFi & advanced

Report Staking Rewards to HMRC: Lido, Rocket Pool, Aave

Staking rewards are usually miscellaneous income, not capital gains. Learn how HMRC treats Lido rebases, Rocket Pool rETH and Aave.

12 min readRead
DeFi & advanced

Uniswap Tax UK: How HMRC Taxes Your LP Position

Uniswap tax in the UK is more than swap fees. HMRC treats LP add, remove, and fee accrual as separate taxable events. Plain-English guide with worked examples.

10 min readRead

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