Paid ETH into an ICO and received tokens you cannot sell for 12 months? For an England tax resident, swapping ETH, BTC or another cryptoasset for locked tokens can create a Capital Gains Tax (CGT) disposal on the payment date, even where no cash changed hands.
Paying crypto into an ICO can trigger CGT
Paying crypto into a token sale normally disposes of the crypto paid and may create a capital gain or loss.
HM Revenue & Customs (HMRC) generally treats an exchange of one cryptoasset for another asset, or for a contractual right to receive tokens, as a disposal for CGT. If ETH cost £2,000 and was worth £7,000 when sent to an ICO wallet, the starting point is a £5,000 gain, subject to pooling, fees and other relevant rules.
If ETH cost you £2,000 and was worth £7,000 when you sent it to an ICO wallet, the starting point is a £5,000 capital gain on the ETH. A token lock-up does not automatically remove that earlier disposal.
Stablecoins remain cryptoassets for this purpose. USDC, USDT and DAI can create a gain or loss when used for a token purchase because of GBP exchange-rate movements, fees and the original purchase price.
Which date matters for the ICO payment?
The relevant date is often when the wallet transaction became effective, although a SAFT or other contract may create a token right before delivery. Keep the transaction hash, wallet address, sale terms and allocation email, as these records can establish what was acquired and when.
ICO tax dates from payment to sale
An ICO is a series of potential tax events rather than one event.
| ICO milestone | Main UK tax question | Evidence to keep |
|---|
| Crypto payment | Did the disposal of ETH, BTC or a stablecoin create a gain? | Transaction hash, GBP price, gas fee |
| Allocation or TGE | What right or token was acquired, and when? | SAFT, sale terms, allocation notice |
| Lock-up or vesting | Was ownership unconditional or still subject to forfeiture? | Vesting schedule, employment terms |
| Sale, swap or spend | What proceeds arose in GBP? | Exchange export, wallet records, fees |
Does a lock-up defer all tax?
A lock-up limits saleability but does not automatically mean nothing was acquired when payment was made. The position is more fact-sensitive where tokens vest over time, can be forfeited, or are linked to employment or founder status.
A listing is not the acquisition date
A listing creates a visible market price but does not rewrite an earlier acquisition date. An investor who paid ETH in a private sale may have acquired a contractual right months before a token lists, so using the first exchange price as the ICO cost basis may be inaccurate.
A simple ICO tax trail
1. Pay crypto
Check disposal gain on ETH, BTC or stablecoin.
2. Get rights
Save sale terms and GBP valuation evidence.
3. Receive tokens
Check income treatment if linked to work.
4. Sell or swap
Calculate the later gain or loss separately.
Calculate ICO gains using GBP evidence
Use GBP values available at the relevant transaction date rather than automatically adopting a later listing price.
HMRC’s Cryptoassets Manual sets out its general approach to cryptoasset records and disposals. The Taxation of Chargeable Gains Act 1992 remains central to CGT analysis.
Work out the gain on crypto paid
Start with the GBP value of the crypto disposed of and deduct its allowable cost and directly linked fees, applying UK pooling and matching rules. If Priya bought ETH for £3,000, sent it to an ICO worth £8,000 and paid £60 gas, her starting ETH gain is approximately £4,940 before other adjustments.
Set the token cost basis carefully
Tokens or a contractual token right normally need a GBP acquisition value supported by sale terms, allocation records, the contemporaneous crypto price and on-chain timestamps. A later token sale is a separate calculation: tokens worth £8,000 when acquired and later sold for £11,500 with £300 fees could produce a £3,200 later gain.
Keep costs and matching rules separate
Later purchases and sales may affect pooled cost, while same-day and 30-day matching rules can override the pool. Gas fees may be allowable when directly linked to acquisition or disposal, but failed fees and broad research costs require greater care.
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Picked for you
A UK-focused crypto tax reference book can help when you are rebuilding old wallet activity and need a paper record beside your transaction exports. It is most useful when ICO terms, token dates and tax calculations do not line up neatly.
- Helps you compare ICO payment dates with later token allocation and sale dates
- Provides a desk reference while preparing figures for a Self Assessment return
- Useful for retaining a clear calculation trail alongside wallet and exchange exports
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Tokens received for work can be income
Tokens received for employment, advisory, coding, marketing, referrals or promotion can be taxable income before any later capital gain.
The relevant question is what you did to receive them. If tokens were earned for identifiable services, calling them an airdrop or community reward does not necessarily change their tax character.
Was there work or a service?
Look at the actual bargain between the parties. Writing content, advising founders, introducing buyers or moderating Discord can all support an Income Tax analysis.
Income first, capital later
Where tokens are taxed as income, their GBP value at receipt normally becomes the starting cost for a later CGT calculation. An adviser receiving tokens worth £6,000 may have taxable income then; a later sale for £9,000 after £200 fees could create a broadly £2,800 capital gain.
Token labels and issuer duties need facts
Token labels do not decide the tax result; rights, consideration and commercial reality do.
A utility token can still trigger a disposal of ETH when bought or income when received for marketing work. FCA classification may matter for regulation, but it is not a shortcut to HMRC’s tax treatment.
A UK issuer may need to consider Corporation Tax, accounting, VAT, contractual promises and record keeping. ICO proceeds are not automatically taxable income, capital, deferred revenue or outside VAT.
This guide is for UK-resident private investors and general project participants. It is not a substitute for a tailored review where a company issues tokens, activity amounts to trading, tokens form employment remuneration, a sale may involve regulated securities, or you are non-UK resident or non-UK domiciled. Those facts can change the result materially.
For ICO tax and token sale tax, the token’s marketing label is only a starting point. A utility token may provide future access to a network, an exchange token may be intended as a means of exchange, a governance token may carry voting rights, and a security-like token may provide rights to revenue, assets or profits. The tax analysis should instead start with the legal and economic rights actually acquired under the sale terms or SAFT agreement.
Those rights can affect whether the buyer acquired a token immediately or a contractual right, how a GBP value is supported, and whether a payment is linked to an investment, a service or another commercial arrangement.
The position also differs by participant. A buyer will usually focus on the cryptoasset disposal used to fund the purchase and the later token disposal. A founder may need to establish whether an allocation was acquired for investment, received for services, or remains subject to genuine forfeiture conditions during token vesting. An employee’s token award can raise employment income, PAYE and National Insurance questions, while an adviser or influencer may have trading or miscellaneous income before any later CGT.
For a company issuing or holding tokens, Corporation Tax follows the accounting and commercial facts; the receipt of subscription funds, obligations to deliver goods or services, staff remuneration and VAT all need to be assessed separately rather than treated as one ICO outcome.
Frequently asked questions
Do I pay tax when I buy ICO tokens with ETH?
Yes, paying ETH into an ICO can create a CGT disposal of ETH on the payment date. The new tokens or token right then need their own GBP cost basis.
Can HMRC see my crypto wallet?
HMRC may link wallet activity through exchange data, AML checks, blockchain analysis and information requests. A public wallet is not anonymous once linked to an account, contract or payment trail.
Are locked tokens taxable before I can sell them?
They can matter before sale if you acquired an enforceable right or received tokens for work. A lock-up does not automatically cancel an earlier disposal or income receipt.
Do I report an ICO loss to HMRC?
An allowable capital loss can usually be claimed where a disposal produces a genuine loss, subject to the facts and UK matching rules.
What records does HMRC expect for a token sale?
Keep wallet addresses, transaction hashes, dates, GBP values, exchange exports, ICO terms, SAFTs and fee records.
Build your ICO evidence pack before filing
Record the GBP value and cost of crypto paid, then separately track the token right, token receipt and later disposal.
For the tax year ending 5 April, online Self Assessment returns are normally due by 31 January after the tax year ends. First-time registration is usually due by 5 October following that tax year.
The essential points:- Sending crypto into an ICO can create a taxable disposal before the new token can trade.
- Use evidence from the relevant date, not automatically the later listing price, to establish GBP values.
- Tokens earned through employment, advice, marketing or referrals may be Income Tax first and capital gains later.
- Keep the sale contract, transaction hash, allocation records and fee evidence before preparing Self Assessment.
When completing Self Assessment, calculate the total gains and allowable losses for the tax year across all relevant transactions, not just the token sale that produced cash. Keep a calculation showing each crypto cost basis and each cryptoasset disposal, then retain the supporting workings even where only summary figures are entered on the Capital Gains pages. This includes CGT on ETH used to subscribe, a Bitcoin disposal used to buy tokens, and stablecoin tax events: USDC tax, USDT tax and DAI tax can arise despite a token being designed to track a currency.
HMRC crypto rules still require GBP valuations, pooling where applicable and evidence for fees, dates and matching-rule adjustments.
Related sources
These articles can help you explore the topic in more depth:
