OECD CARF — crypto goes transparent.
The OECD Crypto-Asset Reporting Framework takes effect in 2026, with first data exchanges in 2027. What is reported, by whom, and what every Web3 founder needs to do before CARF data lands.
What CARF is
The Crypto-Asset Reporting Framework (CARF) is the OECD\'s extension of the Common Reporting Standard (CRS) to crypto assets. Approved in 2022, opened for signature in 2023, and entering into force on 1 January 2026 for first-wave jurisdictions, CARF requires Reporting Crypto-Asset Service Providers (RCASPs) — exchanges, brokers, dealers and certain wallet providers — to collect and report data on users\' crypto-asset transactions to the user\'s home tax authority via the RCASP\'s home authority.
From the founder perspective, CARF closes the most-significant remaining gap in the global tax-transparency regime. Where CRS already covers fiat bank accounts, CARF now covers crypto. The two regimes between them mean that holding assets offshore — in any form — is no longer a privacy strategy.
First-wave jurisdictions
As of early 2026, 48 jurisdictions have committed to first-wave CARF implementation, including: all EU member states, the UK, the US, Switzerland, Singapore, Hong Kong, Australia, Canada, Japan, the Cayman Islands, the British Virgin Islands, Bermuda, the Bahamas, the Channel Islands, the Isle of Man, the UAE, Liechtenstein, Norway, Iceland, South Korea and several others. First exchange of CARF data will occur in 2027 for 2026 reporting periods.
What gets reported
- User identification. Name, address, jurisdiction of tax residence, TIN, date of birth (individuals) or entity details (entities with reportable controlling persons).
- Aggregate gross transaction values per reportable asset type, including: crypto-to-fiat exchanges, fiat-to-crypto exchanges, crypto-to-crypto exchanges, transfers of crypto, and "Relevant Retail Payment Transactions" above USD 50,000.
- Year-end aggregate balances where the service provider provides custody.
NFTs and stablecoins are within scope. Pure protocol-to-protocol on-chain transfers between a user\'s own wallets are not — but the on-ramp and off-ramp to and from a Reporting Crypto-Asset Service Provider is.
Implications for founders and token issuers
- Personal tax declarations. Founder crypto holdings will be reported to home tax authorities. Treat existing holdings as if they were already disclosed; reconcile any historical underreporting via voluntary disclosure regimes before 2027 reports land.
- Token-issuer KYC. Token issuers conducting sales above USD 50,000 per individual will need to perform full KYC including tax-residence verification. Anonymous public sales above the threshold are no longer compatible with credible exchange listing.
- Tax structuring under tighter scrutiny. CFC rules, transfer-pricing rules, and substance-over-form doctrines applied by home tax authorities will have CARF data feeds. Aggressive structures will be challenged faster.
- Increased value of UAE residency. Where the founder is genuinely tax-resident in the UAE, CARF reporting flows to the UAE FTA — which then has no domestic income tax to assess. UAE residency, properly evidenced, becomes more (not less) commercially valuable in a CARF world.
What ArxSetup does
For Web3 clients we (a) review the existing exchange and custody arrangements to identify CARF reporting flows, (b) audit personal tax-residence documentation to ensure CARF reports land in the desired jurisdiction, (c) advise on voluntary disclosure pathways where pre-2026 reporting gaps exist, and (d) build CARF-compliant KYC and treasury-management policies for token-issuer clients. This is delivered as part of our Web3 structuring engagements or as a standalone "CARF readiness review" at USD 8,500.