Tax & Regulation
What's changing in 2026? (CARF reporting)
From January 2026, UK exchanges auto-report to HMRC under CARF. Miners must declare all income. See what changes and what stays the same.
From 1 January 2026, the UK adopts the OECD Crypto-Asset Reporting Framework (CARF). This is a major change that affects all UK crypto users.
| Change | What It Means | Impact on Miners |
|---|---|---|
| CARF reporting | Exchanges report your data to HMRC | HMRC will see all your disposals automatically |
| Data collected | Name, address, TIN, transaction details | No more "flying under the radar" |
| Who reports | UK-based crypto service providers | Exchanges, brokers, custodians |
| Self Assessment | New crypto sections on 2024/25 returns | Dedicated crypto reporting fields |
⚠️ What this means practically: If you've been selling mined crypto through exchanges without declaring it, HMRC will now have that data automatically. The message is clear: declare everything properly going forward. HMRC's crypto nudge letters have already begun.
For compliant miners, this changes nothing — you should already be declaring mining income and CGT on disposals. The upside is that CARF may actually help honest miners by providing automatic records of exchange transactions.
ℹ️ Mining pool payouts to your own wallet are not exchange transactions and won't be captured by CARF. You still need to maintain your own records of coins received from pools.