Badges and tests to decide business
The first legal test is HMRC's badges of trade, applied as a whole. These badges help decide if activity looks like trading or investment.
What the badges are
The badges include frequency, intention to profit, organisation, method of sale, financing and repetition. Treat them as simple clues in a wider picture.
How HMRC weighs them
HMRC applies the badges holistically. No single badge decides the outcome.
The most common error at this point is treating one badge as decisive rather than the overall pattern. That mistake often leads to a reclassification.
A clear score helps avoid late surprises.
How to turn badges into a score
A practical option is a 10-point scoring tree. It converts qualitative badges to numbers and gives thresholds for likely trade, borderline and likely investment.
A simple score helps pick the right tax route before filing. Keep the sheet with your records.
Use a scoring sheet: frequency (0-3), organisation (0-2), profit intent (0-3), scale (0-2). A total 7+ suggests trade; 4-6 is borderline; 0-3 suggests investment. Keep the sheet with your records.
Step 1: Count trades, time spent and automation.
Step 2: Score badges and total points.
Step 3: If score ≥7, treat as income; if ≤3, treat as CGT.
Start: Describe activity and count trades
Frequent, organised, profit-seeking → Likely income
Sporadic sales, long holds → Likely CGT
Typical investor: casual disposals
An investor who buys and holds then sells occasionally usually falls under CGT. Occasional disposals rarely look like trading.
When CGT applies
CGT applies on disposal of an asset when it is sold, exchanged or given away. Keep the date, sale proceeds in GBP, and cost basis for each disposal.
How to report CGT
Report gains on the Self Assessment Capital Gains pages in the tax return for the year of disposal. HM Revenue & Customs gives guidance on crypto reporting on GOV.UK.
GOV.UK: Tax on cryptoassets
What investors must keep
Keep exchange exports, wallet addresses, transaction hashes, timestamps and conversion rates. These items prove how values and dates were calculated.
A typical case: an investor sold three coins over the year and reconciled proceeds using exchange CSVs to avoid an HMRC query.
HMRC matching rules for disposals: same‑day
Capital gains on crypto disposals in the UK use a specific matching order. This order can change gain calculations materially.
- First, any acquisitions and disposals on the same day are matched
- Second, acquisitions in the 30 days after a disposal are matched to that disposal (the 30‑day rule prevents 'bed and breakfast' replacements)
- Third, remaining holdings of the same asset are treated as part of your section 104 pool and gains are calculated using the average cost of that pool
Practical impact: if you bought 1 BTC on 1 January for £20k, another 1 BTC on 10 January for £30k, and sold 1 BTC on 15 January for £45k, the 30‑day rule may match the 10 January acquisition to the 15 January disposal. That match gives a £15k gain (45k−30k) rather than comparing to the earlier 20k cost.
That difference changes CGT on crypto significantly. Transaction CSVs must preserve timestamps and GBP valuation at each acquisition and disposal.
Active trader or provider: income tax route
Regular buying and selling, market making, or receiving crypto as payment often creates trading income. Such patterns usually attract Income Tax and possibly National Insurance.
When trading income arises
Income arises where activity shows a trading pattern, or when mining, staking or providing services generates proceeds. Mining and staking rewards can be taxable as income when received.
Registering and paying NICs
If treated as self‑employment, register for Self Assessment and for Class 2/Class 4 National Insurance if applicable. Running as a company changes the tax regime to Corporation Tax and may require PAYE.
What most guides omit on classification
Most guides say to check the badges of trade, but they often omit the effect of timing and valuation on receipt of staking or mining rewards.
The timing of recognition can change the tax year and tax type. That timing can alter whether income or CGT applies.
Practical steps to register and incorporate
If your scoring sheet suggests trading income rather than casual investment, follow simple date-based steps so HMRC deadlines are met. Record responsibilities for crypto tax in the UK.
If operating as a sole trader: register for Self Assessment and as self‑employed on GOV.UK, no later than 5 October following the end of the tax year you started trading. Apply for a Unique Taxpayer Reference and set up online Self Assessment access so filing and Class 2/Class 4 National Insurance can be done.
If a corporate structure is preferred, incorporate a UK limited company at Companies House and register the company for Corporation Tax within three months of starting to trade. Set up PAYE if the company will employ staff or pay a salary. The company must keep statutory accounts and file a Company Tax Return.
For either route, keep a dated record of when you began trading. That date is key for registration deadlines, accounting periods and for Self Assessment reporting.
Practical checklist: gather your ID, UTR (if existing), business start date, bank and exchange records, and a badges score to attach to your first filing or adviser meeting.
Calculations, examples and spreadsheets
A side-by-side calculation shows whether Income Tax or CGT leaves a lower net tax bill. The comparison needs real numbers and allowances.
Worked example: casual investor
Assume purchase: 10 BTC at £3,000 each (total cost £30,000). Sold 2 BTC at £50,000 each (sale proceeds £100,000).
Realised gain equals sale proceeds minus apportioned cost and fees. For illustration: apportioned cost = (2/10)*£30,000 = £6,000.
Gain = £100,000 - £6,000 = £94,000 before reliefs and costs. Apply annual CGT allowance where available and CGT rates to compute tax due.
Worked example: active trader
Take same economic numbers but treat profits as trading income. Trading profit equals receipts less allowable trading expenses.
Deductible items include exchange fees, platform subscriptions, hardware and a reasonable share of home office costs. Income Tax and NICs apply to the net profit.
Tab1: Transactions
Columns: Date, Type (buy/sell/stake), Asset, Units, GBP value, Fee GBP, Wallet TXID
Tab2: Cost basis
Columns: Asset, Method (FIFO), Units held, Total cost GBP, Avg cost per unit (formula)
Tab3: Badges score
Columns: Badge, Score (0-3), Notes
Tab4: Tax calc
Columns: Scenario, Profit, Allowable expenses, Taxable, Tax rate used, Tax due
Net tax flip example
A simple comparison table helps see the tipping point between CGT and Income Tax. Net tax can flip once expenses and allowances are added.
| Scenario |
Tax basis |
Taxable amount |
Approx tax due |
| Investor example |
CGT |
£94,000 |
£18,800 (at 20%) |
| Trader example |
Income Tax + NICs |
£88,000 (after expenses) |
£26,720 (20% IT + 9% NI illustrative) |
Note: the numbers in these worked examples are illustrative. Check up-to-date rates on GOV.UK before filing.
This highlights the importance of including expenses and allowances in the comparison.
What counts as allowable expenses for a trading business
Trading businesses can deduct allowable expenses when calculating crypto trading tax. The rules require sensible apportionment and supporting evidence.
Typical deductible items include exchange fees, subscription costs for charting or accounting software, bank charges, platform commissions, professional fees (accountant/legal), advertising, and proportionate home-office costs. For mining or staking, electricity and hardware costs may be partially deductible.
Electricity is a running expense that must be apportioned between personal and business use. Hardware such as rigs or computers is likely a capital item and should be claimed through capital allowances or amortised rather than entirely expensed in one year.
Example: if a miner runs a rig 70% for mining and 30% for personal use, only 70% of the electricity and a 70% share of allowable depreciation are normally allowable.
Always keep receipts, invoices and a clear note of the apportionment method. Time used, watts used or hours operated are common bases for apportionment.
Good crypto record keeping showing receipts, dates and calculations reduces the risk of challenge and helps compare the crypto trading tax outcome with CGT on disposals.
NFTs, DeFi and LP tokens
NFTs, DeFi and LP tokens raise specific tax traps and often create multiple taxable events. These areas need careful notes and timestamps.
NFT creators vs collectors
Creators who mint and sell frequently resemble traders and often have trading income. Collectors who buy and sell occasionally usually face CGT on disposals.
DeFi events that trigger tax
Token swaps usually count as disposals, rewards and yield may be taxable on receipt, and airdrops need careful treatment. Keep every transaction hash and timestamp for valuation.
LP tokens and how to apportion cost
Supplying liquidity can create several taxable events: supplying, receiving rewards, and withdrawing underlying tokens. Allocate cost across received tokens and keep notes on impermanent loss.
Preparing for an HMRC review
An HMRC review requires clear reconciliations and a durable audit trail. Prepare evidence before contact to shorten disputes.
HMRC review checklist
Have export CSVs, wallet proofs, exchange statements, bank statements, invoices for services and a badges scoring sheet ready. Also prepare a transaction reconciliation showing how each disposal maps to an entry in your ledger.
Templates and ready replies
Prepare short written explanations for HMRC covering trading pattern, method of valuation, and expense claims. A template letter explaining trading intent and attaching the badges score reduces time in dispute.
Penalties and appeals
Penalties apply where there is deliberate or careless omission. Voluntary disclosure often reduces penalties.
If disagreement persists, appeals can go to UK Tax Tribunals after internal review. Seek written professional advice before appealing.
This guidance does NOT apply if the activity runs through a UK limited company (Corporation Tax rules apply), if the taxpayer is non‑UK resident, or where there is already a formal HMRC ruling or bespoke professional tax advice. VAT and employer PAYE obligations follow separate rules and may still apply.
Frequently asked questions
Do you get taxed on crypto profits in the UK?
Yes, crypto profits are taxed either as income or as capital gains depending on the nature of the activity. The taxpayer reports disposals and income through Self Assessment and follows HMRC guidance on cryptoassets.
Is crypto considered a hobby?
Possibly: casual holding and occasional sales with no organised profit motive often classify as an investment rather than a trade. Apply the badges of trade and the scoring sheet to decide.
How to avoid paying crypto tax in the UK?
Tax avoidance through concealment is illegal; lawful planning uses available reliefs and timing. Use the annual CGT exemption where available and claim allowable trading expenses when trading.
When must I register for Self Assessment?
Register if trading income arises or if taxable crypto proceeds are not taxed at source and exceed personal allowances. Registration deadlines are strict, so check GOV.UK guidance and register early.
How are staking or mining rewards taxed?
Staking and mining rewards can be taxable as income when received and may create a separate capital event on disposal. Treat valuation at market value on receipt and record supporting evidence for HMRC queries.
What records does HMRC expect for DeFi activity?
HMRC expects a clear audit trail: transaction hashes, timestamps, wallet addresses, conversion rates to GBP, and notes explaining complex swaps or pooled transactions. Reconciliation showing how totals match exchange reports helps resolve queries.
What to do next
Start by scoring your activity with the badges sheet and running the spreadsheet examples against your numbers. If the score indicates trading, register for Self Assessment or consider incorporation depending on scale and liability preferences.
If the score is borderline, keep full records, run both tax scenarios with real numbers, and get independent review if net tax or penalties could be material.
Contact a specialist tax adviser only if numbers show significant tax at stake or if HMRC opens an enquiry. Prepare the badges scoring, reconciliations and written explanations before that meeting.
Will HMRC know if I sell crypto?
Data sharing and AML reporting make detection increasingly likely, especially where fiat flows into bank accounts. Keeping accurate records and making voluntary disclosures reduces penalties if past returns were incomplete.