TL;DR: Not directly, on the current evidence, but your activity is not beyond HMRC's reach. CoinCorner Ltd operates from Douglas and appears to fall within the Cryptoasset Reporting Framework's (CARF) functional definition of a reporting cryptoasset service provider, because it provides exchange services to customers. Subject to the scope and nexus rules, its CARF reporting route would be to the Isle of Man's Assessor of Income Tax, under island rules in force since 1 January 2026 with reportable 2026 data due by 30 June 2027. UK customer data is expected to reach HMRC only once the UK and Isle of Man exchange relationship is in effect, which HMRC's published 2026 lists had not confirmed as at 31 July 2026.
This guide covers which CoinCorner company you are dealing with, how its data can reach HMRC and when, where Coinfloor records went, and how to get a CoinCorner history into shape, as the rules stand in September 2026. A CARF report is a summary of activity, never a tax calculation, so working out the gains is still your job.
Disclaimer
This guide is intended as a generic informative piece. This is not accounting or tax advice that can be relied upon for any UK individual's specific circumstances. Please speak to a qualified tax advisor about your specific circumstances before acting upon any of the information in this article.
Which CoinCorner company are you dealing with?
The exchange is CoinCorner Ltd, Isle of Man company number 129003C, registered with the Isle of Man Financial Services Authority as a designated business for anti-money-laundering oversight. Your pounds and euros can sit in one of two places. Eligible customers, including UK residents, may open an e-money account provided by Mercury Foreign Exchange Limited, an English company authorised by the FCA to issue electronic money, with CoinCorner as its distributor; if you use that product, the account and its payment services are Mercury's. Customers who are not eligible, or who deposit by bank transfer without opening an e-money account, may instead use a fiat currency wallet provided by CoinCorner itself.
CoinCorner's published terms identify the Isle of Man company as the provider of the crypto service and do not identify a UK entity or branch as providing it. A different UK nexus, such as UK tax residence, incorporation, central management or control, or a qualifying UK branch, could change where some activity must be reported under the UK's own reporting regulations and nexus rules.
How CoinCorner data can reach HMRC under CARF
A reporting provider files with the tax authority of the place where it is tax resident, incorporated or managed, and that authority exchanges the data with the countries where the customers live. If CoinCorner is within scope, as its exchange service suggests, the report goes to Douglas first, and the Isle of Man's end is in place: Tynwald approved the Income Tax (Crypto-Asset Reporting) Regulations 2025 on 11 December 2025; they came into operation on 1 January 2026, with 2026 as the first reporting year and returns due by 30 June 2027. The island signed the CARF Multilateral Competent Authority Agreement on 26 November 2024.
The exchange step is not automatic on signature. Under the island's regulations a country only counts as a reportable jurisdiction once an arrangement obliging the Isle of Man to send it information is in effect and the country appears on a list published by the Assessor. The UK works the same way, through its lists of partner jurisdictions and reportable jurisdictions for the 2026 reporting year, and when HMRC last updated them on 31 July 2026 neither list named the Isle of Man, Jersey or Guernsey. HMRC says the lists may change as it concludes agreements facilitating the exchange of CARF information. Until they do, the accurate description is that CoinCorner's reporting route runs to the Isle of Man, and that UK customer data is expected, though not yet confirmed, to be passed on to HMRC.
What goes in the report, and when
Who you are: name, date of birth, address, tax residence and a tax identification number for each jurisdiction, collected through a self-certification (see why crypto exchanges are asking for personal details). And, for users the rules treat as reportable, aggregate values and units for the calendar year's buys, sells, exchanges and transfers, including payments for goods and services.
| Step | Isle of Man providers | UK providers |
|---|---|---|
| Collection starts | 1 January 2026 | 1 January 2026 |
| First report covers | Calendar year 2026 | Calendar year 2026 |
| First report due | By 30 June 2027 | Between 1 January and 31 May 2027 |
| Data on UK residents reaches HMRC | Once an effective UK and Isle of Man exchange relationship exists. Separately, the UK plans first exchanges with participating jurisdictions by 30 September 2027; no Isle of Man-specific date is confirmed | Direct to HMRC |
CARF runs on calendar years, so the first report straddles the 2025/26 and 2026/27 tax years, and nothing before 1 January 2026 is in it.
Could HMRC already ask about older CoinCorner or Coinfloor activity?
CARF is not HMRC's only route to information. Schedule 23 to the Finance Act 2011 lets HMRC require relevant data from specified data-holders, with treaty exchange of information as the route for data-holders outside the UK, and Schedule 36 to the Finance Act 2008 information notices can be served at an address outside the UK. A Mercury e-money account may leave UK-held payment records, though that does not mean Mercury holds your CoinCorner crypto history. No public evidence was found that HMRC has obtained CoinCorner or Coinfloor customer data in bulk; Coinbase is the well-known public example of these powers in use. HMRC also sent 64,982 crypto nudge letters in 2024/25, according to a UHY Hacker Young freedom-of-information request; a letter means HMRC thinks you may need to check your position, not that tax is due, and our guide to responding to a nudge letter covers the next steps.
Is CoinCorner regulated in the UK?
CoinCorner's cryptoasset services are not regulated by the FCA. Its own footer says that CoinCorner and investments in cryptoassets are not regulated by the Financial Conduct Authority, are not covered by the Financial Ombudsman Service and are not subject to FSCS protection; the crypto activity is registered with the Isle of Man Financial Services Authority as a designated business for anti-money-laundering oversight. On the FCA register, checked in September 2026, the only CoinCorner entry is a former e-money agent record, shown as "EMD Agent Former" since July 2022, and there is no cryptoasset registration for any CoinCorner company. The Mercury e-money product has its own, separate regulatory position.
Since 6 October 2023 UK-based users have not been able to buy Ethereum or Litecoin on CoinCorner, although anyone holding them can still store or sell. An ETH balance you have not been able to add to for three years is still a chargeable asset the day you sell it, and its original cost may sit in a Coinfloor export rather than a CoinCorner statement.
What happened to Coinfloor, and where are your records?
Coinfloor, founded in 2013 and the UK's longest-running Bitcoin exchange, sold its customer base and domains to CoinCorner on 4 October 2021. Accounts not closed by 4 November 2021 were migrated automatically, so some people hold a CoinCorner account they never knowingly opened (log in with the old Coinfloor email after a password reset).
The history did not come across. Your Coinfloor trades are not visible inside CoinCorner; Coinfloor emailed full account activity exports as CSV files to everyone who had transacted, in October 2021, and CoinCorner support will help where it can if that email is gone. Those files set the cost basis for Bitcoin you may still hold today, because a CoinCorner statement alone shows the coins arriving with no purchase price attached. Recap accepts the Coinfloor trade, deposit and withdrawal, and Auto Buy export files as a separate Coinfloor account, so the pre-migration history can be rebuilt from the original files.
Where CoinCorner tax gets missed
The points below cover the Bitcoin, GBP and EUR side of a CoinCorner account, which is what Recap's import reads; the newer USDT, Rewards Account and loan products follow the list.
- One account, three statements. CoinCorner exports a separate file for each balance: GBP, EUR and BTC. A buy appears in the fiat file as the money leaving and in the BTC file as the coins arriving, so reconciling them badly means counting trades twice or missing the fees.
- Recurring buys are many small acquisitions. A monthly Recurring Bitcoin Buy is twelve separate purchases a year, each with its own price and 1% fee, all feeding one Section 104 pool; our cost basis guide explains how they average out.
- Bolt Card taps are disposals. The Bolt Card pays Lightning invoices from your CoinCorner Bitcoin balance, and HMRC lists using tokens to pay for goods or services as a disposal, so a coffee bought with sats is a capital gains event at that day's sterling value, however small. The same applies to any Lightning payment you send.
- Stacking Accounts are usually transfers. A Stacking Account is a labelled sub-account inside your CoinCorner account, with no yield, and HMRC does not treat moving tokens between wallets you control as a disposal. If one is used to give Bitcoin to someone else, as CoinCorner suggests for family members, beneficial ownership may have changed and the tax treatment can differ.
- Euro trades need converting. UK tax is worked out in pound sterling, so each trade priced in euros needs a sterling value at its own date.
If you have used USDT, a Rewards Account or a loan. CoinCorner now lets customers buy and sell USDT for GBP or EUR and send or receive it on the Tron network, earn Bitcoin through a Rewards Account on eligible BTC or USDT balances, paid monthly, and, for UK customers, take a USDT loan against Bitcoin collateral of up to 50% of its value, with collateral liquidated if the loan-to-value ratio rises too far (whether posting that collateral is itself a disposal depends on who acquires beneficial ownership). Every USDT buy and sell is an acquisition or disposal in its own right. Rewards may be taxable as income at their sterling value when received, but HMRC says the result depends on how the product is structured and whether the return is revenue or capital. CoinCorner's terms say that moving assets into a Reward Account grants CoinCorner broad rights to loan, deploy or use them in its own name. Those rights are an indicator that beneficial ownership may pass; HMRC's lending and staking guidance says a disposal occurs where the recipient acquires beneficial ownership, so the contract and facts need examining. Repayments, fees and any liquidation also need classifying from the terms and transaction records, and professional advice is worth having. Keep CoinCorner's records for all of it, because Recap's CoinCorner import currently reads the GBP, EUR and BTC statements only.
How CoinCorner gains are worked out
UK disposals follow HMRC's matching order: same-day acquisitions first, then any bought in the following 30 days, then the pooled average cost of everything else you hold; the walkthrough is in our comprehensive UK crypto tax guide. CoinCorner accounts have one quirk with that order: when a recurring buy is running, a Bolt Card tap on the 3rd of the month is matched against the buy that lands on the 15th under the 30-day rule before it reaches the pool, so the cost of that coffee is the price you paid a fortnight later rather than your long-run average.
Suppose your pooled Bitcoin cost works out at £42,000 per coin. In March 2026 you sell 0.05 BTC for £3,300 against pooled cost of £2,100, a £1,200 gain, and across the year 40 Bolt Card taps spend 0.012 BTC worth £760 against pooled cost of £504, a further £256. Assuming all of these disposals match against the pool and there are no allowable losses, total gains are £1,456, inside the £3,000 annual exempt amount, so no Capital Gains Tax is due, and proceeds of £4,060 are well below the £50,000 figure that triggers the capital gains pages for someone already filing Self Assessment. Confirming that no CGT is due still meant valuing 41 disposals in sterling.
What should I do if I have undeclared CoinCorner gains?
Start with the statements, plus any Coinfloor exports, and work each tax year through in sterling; many quiet years will fall inside the annual exempt amount once the pooling is done properly. Where a year does not, gains from the current or previous tax year belong on a Self Assessment return; a return you have already filed can normally be corrected within 12 months of its filing deadline; once that window has closed HMRC's guidance is to write to it; and unpaid crypto tax from older years that sits outside the normal return route can be settled through the Cryptoasset Disclosure Facility, open since November 2023. Unprompted disclosures can attract lower minimum penalty ranges than prompted ones, though the outcome depends on the circumstances, and for larger sums a crypto-specialist accountant is worth the fee.
How Recap helps with CoinCorner tax
Recap has a dedicated CoinCorner statement import: download the GBP, EUR and BTC exports from the Accounts page in CoinCorner, add a CoinCorner account in Recap and upload all three (the help article has screenshots). Recap reads the trades from the fiat files, the on-chain and Lightning sends and receives from the BTC file, and the bank deposits and withdrawals, de-duplicating anything that appears in more than one export and valuing euro-priced trades in sterling at their dates. Payments to other people arrive as withdrawals; mark the ones that were spends as a Purchase and Recap treats them as disposals under the same-day, 30-day and Section 104 rules. Coinfloor exports go into their own Coinfloor account so the older cost basis carries forward; USDT, Rewards Account and loan activity is not read from the statements, so add it manually from CoinCorner's records. Recap is built in the UK and encrypts your data end to end on your device, so we never see your portfolio.
Key takeaways
- CoinCorner appears to report under Isle of Man CARF rules, not directly to HMRC. Those rules have been in force since 1 January 2026, with reportable 2026 activity due by 30 June 2027; exchange with HMRC is expected once the relationship is in effect, which HMRC's 2026 lists had not confirmed at 31 July 2026.
- Two providers can sit behind your sterling balance: an FCA-authorised e-money account from Mercury Foreign Exchange, or a fiat wallet from CoinCorner itself, depending on your account setup.
- Every Bolt Card tap and Lightning payment is a disposal at that day's sterling value, and purchases in the 30 days after a spend are matched to it before the pool is touched. A move into your own Stacking Account is not a disposal, provided you remain the beneficial owner.
- Newer products and older history need their own records. USDT trades, Rewards Account activity and loans are outside the three statements Recap reads, and Coinfloor history lives in an October 2021 email rather than the app.
References
Legislation
- The Reporting Cryptoasset Service Providers (Due Diligence and Reporting Requirements) Regulations 2025 (SI 2025/744)
- Schedule 23, Finance Act 2011 (data-gathering powers)
- Schedule 36, Finance Act 2008 (information notices)
Isle of Man
- Income Tax (Crypto-Asset Reporting) Regulations 2025, SD 2025/0229 (commencement 1 January 2026; definitions of competent authority agreements, Partner Jurisdiction and Reportable Jurisdiction)
- Isle of Man Income Tax Division: Industry Advisory Notice, 18 December 2025 (CARF in effect 1 January 2026; first returns due 30 June 2027)
- Isle of Man Government: Crypto-Asset Reporting Framework
HMRC and gov.uk
- HMRC IEIM8000110: definition of a reporting cryptoasset service provider
- HMRC IEIM8000320: CARF nexus rules (entity hierarchy)
- HMRC IEIM8000710: CARF partner jurisdictions (2026 list)
- HMRC IEIM8000720: CARF reportable jurisdictions (2026 list)
- HMRC: domestic reporting of UK-resident cryptoasset users under CARF
- HMRC transformation roadmap progress update 2026 (first international exchanges by 30 September 2027)
- HMRC CH28010: Schedule 23 data-gathering and overseas data-holders
- HMRC CH223150: Schedule 36 notices served outside the UK
- HMRC CRYPTO22100: what is a disposal (paying for goods or services; transfers between your own wallets)
- HMRC CRYPTO22200: pooling and matching rules
- HMRC CRYPTO61130: lending and staking returns depend on the operating model
- HMRC CRYPTO61214: whether a lending or staking return is revenue or capital
- HMRC CRYPTO61213: sterling value where the return is income
- HMRC CRYPTO61620: making a lending or staking transfer and beneficial ownership
- HMRC CRYPTO61640: loan collateral and beneficial ownership
- HMRC: check if you need to pay tax when you sell cryptoassets (sterling valuation)
- HMRC: Capital Gains Tax rates and allowances
- HMRC: Self Assessment corrections (12-month amendment window)
- HMRC: tell HMRC about unpaid tax on cryptoassets (Cryptoasset Disclosure Facility)
Regulators and statistics
- FCA register: CoinCorner Ltd, firm reference 903018 (EMD Agent Former)
- UHY Hacker Young: FOI on HMRC crypto nudge letters (64,982 in 2024/25)
CoinCorner
- CoinCorner: Terms of Use (Mercury Foreign Exchange Limited; FCA regulatory statement)
- CoinCorner: Isle of Man Terms of Use and Privacy Policy (CoinCorner Ltd, 129003C; e-money accounts and fiat currency wallets; Reward Account)
- CoinCorner support: depositing by bank transfer (with or without an e-money account)
- CoinCorner blog: CoinCorner acquires Coinfloor's customer base and domains (4 October 2021)
- CoinCorner support: accessing migrated Coinfloor accounts
- CoinCorner support: Coinfloor transaction history
- CoinCorner support: altcoins (UK buying of ETH and LTC ended 6 October 2023)
- CoinCorner support: using Stacking Accounts
- CoinCorner blog: The Bolt Card (17 May 2022)
- CoinCorner support: fees and limits (1% trading fee)
- CoinCorner support: buying and selling USDT
- CoinCorner support: sending and receiving USDT (Tron network)
- CoinCorner support: what is a Rewards Account
- CoinCorner support: Bitcoin-backed USDT loans for UK customers
Recap
- Recap: CoinCorner integration
- Recap: Coinfloor integration
- Recap Help Centre: Adding your CoinCorner account
- Recap: Does Coinbase report to HMRC?
- Recap: Why is my crypto exchange asking for my personal details?
- Recap: How to respond to a HMRC crypto nudge letter
- Recap: Crypto cost basis, what it is and how to calculate it
- Recap: Crypto Tax UK, a comprehensive guide
- Recap: crypto accountants directory
