Overseas Crypto Exchange: Will HMRC Get My Data?
Updated 17 October 2026
General information, not tax advice. We are not HMRC and are not affiliated with it. Check GOV.UK. Last checked against GOV.UK: 17 October 2026. Anything marked expected should be re-checked. Examples use made-up figures. This page contains no affiliate links. Do not enter personal identifiers (National Insurance number, UTR, name, date of birth) on this site.
Short answer: GOV.UK says you must give your identifying details to every cryptoasset service provider you use, even if it is not based in the UK. If you live in the UK but use a non-UK provider, and that provider's country follows the same rules, that country's tax authority will share your information with HMRC. If you do not live in the UK but use a UK provider, HMRC will share your information with your country's tax authority if your country follows the same rules.
Three situations (GOV.UK, updated 1 January 2026)
| You | The provider | What GOV.UK says |
|---|---|---|
| Live in the UK | UK provider | HMRC uses your information to link your activity to your tax record |
| Live in the UK | Non-UK provider | If that country follows the same rules, its tax authority will share your information with HMRC |
| Live outside the UK | UK provider | If your country follows the same rules, HMRC shares your information with its tax authority |
Penalties (GOV.UK)
Giving inaccurate details, or none, to a UK provider could mean a penalty of up to £300. For non-UK providers "the penalty could be higher". GOV.UK does not give the higher figure on this page.
What GOV.UK does not say
- Which countries follow the same rules, or when they start sharing.
- Whether a provider outside CARF countries will ask you for anything.
- How HMRC will compare shared data with your return. Do not assume data from a particular country will or will not reach HMRC. The safer assumption is to report accurately whatever platform you used. See also the unpaid tax disclosure page below if you missed earlier years.
Related
Several accounts checklist · What HMRC will receive · CARF key dates · Disclosure service
FAQ
I moved abroad. What should I do? The page read covers residence only as the country where you normally live; it does not explain changes of residence. Tell your provider if your details change, and ask an adviser about tax residence.
Do I owe UK tax because a UK provider has my data? Not by that fact alone; tax depends on residence and the transactions, not on the provider.
What we could not verify
Uncertain. These points were not confirmed on the pages read. A re-check of the GOV.UK pages is planned for 1 December 2026.
- The higher penalty for non-UK providers (amount not given).
- List of CARF countries and first data-sharing dates.
- What a change of residence requires in practice (IEIM change-of-circumstances page not found/read).
- How HMRC matches shared data.
Sources (official)
- GOV.UK (HMRC), Information you need to give to UK cryptoasset service providers (published 14 May 2025, last updated 1 January 2026) — https://www.gov.uk/guidance/information-youll-need-to-give-to-uk-cryptoasset-service-providers (read in full 17 October 2026)
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