Official-source checkpoint
1 January 2027 to 31 May 2027 reporting window
GOV.UK says the first CARF report must be submitted between 1 January 2027 and 31 May 2027, covering 1 January 2026 to 31 December 2026.
UK CARF cryptoasset reporting visibility
UK CARF First Reporting Window and Crypto-Tax Evidence
For UK crypto holders and advisers who want transaction records organised before HMRC receives richer cryptoasset reporting data.
Action path
What to do before relying on any date.
Use this as a triage path. Confirm the official rule, identify whether the problem applies, then use the specific product only if the gap is real.
Step 1
Reconstruct wallet, exchange, cost-basis and missing transaction evidence before a nudge letter arrives.
Step 2
Use qualified tax advice for disclosures, penalties, disputes or uncertain tax positions.
Step 3
Treat CARF as a visibility trigger, not a substitute for correct Self Assessment reporting.
Reviewed product routes
Start with the diagnostic or decision guide.
Each product card links to the public offer, the free diagnostic where available, the decision guide and the individual checkout.
Tax, Accounting and Finance / Rank 2
CryptoTax Rescue UK
A UK crypto holder who just opened an HMRC 'nudge' letter (or fears one once CARF data lands) goes from 3am panic to a calm, organised position in a weekend: years of messy...
PriceGBP 79
Sales to GBP 100013