New Cryptoasset Reporting Framework (CARF) implemented - how might it affect you?
min readFor years, the "crypto-curious" and the "crypto-serious" have enjoyed a certain… administrative distance from HMRC. But as of 1 January 2026, that gap is closing.
HMRC is about to see your crypto transactions the way it sees your bank account.
What's changing?
Under the Cryptoasset Reporting Framework (CARF), UK-based crypto exchanges and wallet providers are now required to hand over the "who, what and where" of your crypto transactions. This data can also be shared across CARF jurisdictions — including the EU, the UAE (signatory only; implementation expected around 2028), Switzerland and the US.
Individuals won't file CARF reports themselves; the platforms will. However, HMRC will then reconcile platform data against Self Assessment (UK tax returns now include a dedicated crypto section for declaring crypto gains and losses).
Practical steps to sleep at night
1. Ensure every platform you use has accurate personal and tax details. If your platform still thinks that you live in a different country, fix it. Inconsistent data is the sure way to trigger a "nudge" letter from the tax office.
2. Keep clean, timestamped records of all disposals (trades, swaps, transfers, staking etc).
3. Ask your platform for a copy of the data they submit. It is much easier to correct a typo today than to explain it to an inspector later.
4. If you have historic undeclared gains, consider voluntary disclosure (which can be cheaper than being "discovered"!).
The new reporting requirements will make it more difficult for taxpayers to avoid reporting under the Common Reporting Standard (CRS), which allows tax authorities to exchange information about financial accounts, by moving their money into cryptoassets.
