UK crypto tax has matured rapidly since 2018. HMRC now treats crypto-asset income with three distinct tax categories: payment for services (income tax + NI), trading profits (income tax), and disposal gains (Capital Gains Tax). This guide covers when crypto appears on your payslip, when it doesn't, and what you must report on Self Assessment.
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The three crypto tax categories
| What you did | Tax category | Rate |
|---|---|---|
| Received crypto as wages from your employer | Income tax + Class 1 NI | Marginal rate (8% NI on top) |
| Mined or staked crypto as a hobby | Income tax (rare) or CGT | Marginal rate |
| Mined or staked crypto as a business | Income tax + Class 4 NI | Marginal rate (8%/2% NI) |
| Received as a gift or airdrop | Income tax usually | Marginal rate |
| Bought, held, then sold crypto | Capital Gains Tax | 18% / 24% (2026/27 rates) |
| Lent crypto for interest (DeFi) | Income tax usually | Marginal rate |
The category determines how it's taxed and where it's reported.
Crypto as wages from your employer
If your UK employer pays you in crypto (full or partial salary), the standard PAYE rules apply:
- The employer values the crypto at the GBP fair-market value at the date of payment.
- That GBP-equivalent value is treated as ordinary income.
- Income tax (PAYE) and Class 1 NI are deducted as if the value had been paid in cash.
- The crypto is transferred to your wallet after deductions.
Practical complication: if your salary is part-cash + part-crypto, the employer must convert enough cash to cover the PAYE + NI on the entire amount. Smaller employers sometimes get this wrong.
If you accept crypto-only wages from a small employer, ensure they're registered with HMRC for PAYE and that they're declaring your income via RTI. Otherwise you're personally liable for the tax + NI when HMRC catches up.
Mining + staking as a hobby vs business
The hobby vs business distinction matters substantially:
Hobby mining/staking
- Small, occasional, no investment in mining infrastructure.
- One-off income event.
- Generally taxed under Miscellaneous Income (Section 779 ITTOIA 2005).
- No NI (it's not employment or trade).
Business mining/staking
- Substantial mining rigs, ASIC investment, electricity costs treated as business expenses.
- Continuous operation, profit motive.
- Taxed as trading income under standard self-employment rules.
- Class 2 NI (voluntary above £6,725 profit) and Class 4 NI (compulsory above £12,570 profit) apply.
The HMRC test: would a third party looking at your activity describe it as a business? Continuous mining for profit = business. Occasional staking of small holdings = hobby.
Receiving crypto via airdrops + gifts
Airdrops (free distribution by a project) are typically taxed as income at the GBP-equivalent fair-market value at the date of receipt.
Gifts of crypto received from a non-spouse:
- For the gift-giver: a disposal for CGT purposes at fair-market value.
- For the recipient: typically tax-free at receipt (it's a gift), BUT a future disposal will use the receipt-date value as the "cost basis".
Spousal gifts are typically not taxable for either party (CGT no-gain-no-loss rule applies).
Capital Gains Tax on crypto disposals
When you sell, exchange or use crypto, you may have a disposal gain or loss:
- Disposal proceeds = GBP fair-market value at disposal.
- Cost basis = GBP fair-market value at acquisition (or s.104 pooling for crypto held in a pool).
- Gain = proceeds minus basis minus allowable costs.
For 2026/27:
- Annual exempt amount: £3,000.
- Basic-rate CGT on crypto: 18%.
- Higher-rate CGT on crypto: 24%.
Crypto-to-crypto trades (e.g. swapping ETH for USDC) ARE disposals, even though no GBP changes hands. You must value both sides at the time of trade and calculate the gain/loss.
The s.104 pooling rules require you to track all acquisitions of the same crypto in a single average-cost pool, with disposals reducing the pool proportionally.
DeFi income - yield farming, lending, staking
DeFi protocols complicate the picture. HMRC's general framework:
- Lending crypto for interest (e.g. via Compound, Aave): interest is income at GBP-equivalent value at the time of receipt.
- Liquidity provision (e.g. Uniswap LP): may involve a disposal of one token + acquisition of LP tokens, with subsequent rewards as income.
- Yield farming: rewards are typically income; the underlying staked tokens may have remained in your possession (no disposal) or been transferred (disposal).
The DeFi tax treatment is complex enough that specialist advice is usually required for any substantial activity.
What to report on Self Assessment
If you have any crypto income or gains exceeding the relevant allowances, you must register for Self Assessment (see our SA registration guide).
Required supplementary pages:
- SA103S or SA103F for self-employment / business mining or trading.
- SA108 for capital gains.
- SA106 if you have foreign-sourced crypto activity (e.g. crypto received from a non-UK exchange).
Records to keep (HMRC requires 6 years):
- Every transaction date, time, type, amount, GBP value at that moment.
- Wallet addresses involved.
- Exchange identifiers and screenshots.
- For DeFi: all smart-contract interactions.
UK crypto-tax software (Koinly, Recap, CoinLedger, Crypto Tax UK) automates much of this work for around £100-£500/year subscription.
Does crypto appear on your payslip?
Only if your employer pays you partly in crypto AND processes it through PAYE properly.
In that case you'll see:
- A GBP-equivalent line for the crypto wage portion (with tax + NI calculated on it).
- A note or comment indicating crypto was the payment method.
Most UK employers DO NOT pay in crypto. If you receive crypto from your employer outside PAYE (e.g. a "bonus" of tokens), this is still taxable as income but you're personally responsible for declaring it via Self Assessment.
Common HMRC enforcement issues
HMRC has substantially upgraded its crypto-tax enforcement:
- Coinbase data: HMRC has received transaction data from major UK exchanges since 2020.
- CryptoCRR (Crypto Asset Reporting Framework): from 2026, a new EU/UK framework requires exchanges to report user transactions to tax authorities.
- Nudge letters: HMRC sends targeted letters to taxpayers it believes have undeclared crypto activity.
- Discovery assessments: HMRC can go back 20 years if they believe deliberate non-disclosure.
If you have prior-year crypto activity you haven't declared, the Worldwide Disclosure Facility lets you bring your records up to date with reduced penalties.
When to talk to a crypto-tax specialist
For simple cases (one or two trades a year, no DeFi, no business mining), DIY using off-the-shelf crypto-tax software is fine. A specialist crypto-tax adviser earns their fee when:
- You have substantial DeFi activity with complex liquidity provision/staking.
- You're a trader or miner at business-scale.
- You have prior-year non-disclosure to regularise via HMRC's Worldwide Disclosure Facility.
- HMRC has opened a discovery assessment or formal enquiry.
- You're considering leaving the UK with substantial crypto holdings (CGT implications).
Disclaimer
PayslipIQ provides automated educational guidance based on the figures you supply. It is not regulated tax advice. Crypto tax is rapidly evolving in the UK - for substantial crypto activity, particularly DeFi, business-scale mining, or undeclared prior-year activity, use a CTA-qualified tax adviser specialising in crypto.
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Check My Payslip FreePayslipIQ provides educational information and estimated calculations only. It does not provide tax, legal, financial, payroll, accounting, pension, benefits or employment advice. Always verify your payslip, tax code, deductions and take-home pay with your employer's payroll department, HMRC, your pension provider, a qualified accountant, tax adviser or another appropriately qualified professional.
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