For years, crypto tax largely ran on the honour system: authorities knew what you chose to tell them. That era is ending. A wave of rules — DAC8 in the EU, CARF at the OECD, and Form 1099-DA in the US — is switching crypto onto the same automatic information-sharing rails that already apply to bank accounts worldwide.
The practical shift is simple and profound: from 2026, the exchange you trade on reports your activity directly to the tax authorities, who then share it across borders. This explainer breaks down each rule — what it does, when it bites, and what it means for you.
The four rules at a glance
| Rule | Scope | What it does | Key dates | Official source |
|---|---|---|---|---|
| DAC8 | EU (tax reporting) | Crypto-asset service providers report users’ crypto data to national tax authorities | Applies from 1 Jan 2026; first reports by 30 Sep 2027 (2026 data) | European Commission |
| CARF | OECD / global (tax reporting) | Global standard for the automatic exchange of crypto data between countries | Data collected from 2026; first exchanges 2027 (US, Singapore, UAE, HK: 2028) | OECD |
| MiCA | EU (market regulation — not tax) | Licenses exchanges (CASPs), regulates stablecoins and consumer protection | Stablecoins: 30 Jun 2024; CASP rules: 30 Dec 2024; transition ends 1 Jul 2026 | ESMA |
| 1099-DA | US (tax reporting) | US brokers report your digital-asset transactions to the IRS (and send you a copy) | Gross proceeds from 2025; cost basis from 2026 | IRS |
Each rule, explained
DAC8 — the EU’s crypto reporting directive
DAC8 extends the EU’s existing tax-information-exchange system to crypto. It requires crypto-asset service providers (exchanges, brokers, some wallet providers) to collect and report their users’ identity and transaction data to national tax authorities, which then share it between EU member states. It applies from 1 January 2026 — so providers have been collecting data since the start of 2026 — with the first reports (covering 2026) due by 30 September 2027. DAC8 is deliberately aligned with the OECD’s CARF.
CARF — the global standard (OECD)
The Crypto-Asset Reporting Framework is the international counterpart of DAC8: an OECD standard for the automatic exchange of crypto data between countries, modelled on the Common Reporting Standard used for bank accounts. Dozens of jurisdictions have committed. First-wave countries collect data from 2026 and make their first exchanges in 2027; a second wave — including the US, Singapore, the UAE and Hong Kong — has committed to first exchanges in 2028. The effect: activity on an offshore exchange no longer stays out of your home country’s view.
MiCA — market rules, not a tax (but it matters)
MiCA is often mentioned in the same breath, but it is not a tax rule. It is the EU’s market regulation for crypto: it licenses exchanges and service providers (CASPs), regulates stablecoins, and sets consumer-protection standards. Stablecoin rules applied from 30 June 2024 and CASP authorization from 30 December 2024, with a transitional period for existing providers ending 1 July 2026 (shorter in some member states). Why it matters for tax: MiCA professionalizes and formalizes the exchanges — the same regulated entities that must then comply with DAC8/CARF reporting.
1099-DA — the US broker report
Form 1099-DA is the US equivalent: it requires digital-asset brokers (centralized exchanges such as Coinbase, Kraken and others) to report your transactions to the IRS and send you a copy. Brokers report gross proceeds for sales from 1 January 2025, and add cost-basis reporting for covered assets from 1 January 2026. The form reaches you in early in the following year (typically by 31 January or 15 February). The catch: the proceeds the IRS sees may not match your real gain unless your cost basis is complete — which is exactly where pre-broker history gaps cause trouble.
What it means for you
- Your exchange data reaches the taxman automatically — declaring accurately is no longer optional, and an undeclared gain is far more likely to surface.
- Cross-border no longer hides anything: offshore exchange activity is shared back to your country of residence.
- Cost basis is the weak point: brokers only know what happened on their platform. Transfers in, older buys, and DeFi activity can leave gaps that make the reported proceeds look like pure profit.
- The fix is good records and a clean reconciliation of your full history — across every exchange and wallet, not just the one that files the report.
Sources
Dates and scope are taken from the official bodies: the European Commission (DAC8), the OECD (CARF), ESMA (MiCA) and the IRS (Form 1099-DA), linked in the table above. Implementation dates can shift and vary by country; confirm specifics with your national authority. This is educational information, not tax or legal advice.
Get ahead of automatic reporting
The safest response to automatic reporting is a complete, accurate report of your own — reconciled across every exchange and wallet, with cost basis intact. SafeTax imports your full history from 500+ platforms and produces a country-specific report you can file, in minutes, with zero data retention. safetax.io.
→ See how much tax each country charges · Check your country’s filing deadline · Binance & the MiCA deadline (June 2026)
Frequently asked questions
What is DAC8?
DAC8 is an EU directive that extends automatic tax-information exchange to crypto. From 1 January 2026, crypto-asset service providers must report their users’ identity and transaction data to national tax authorities, which share it across the EU; the first reports (covering 2026) are due by 30 September 2027.
What is CARF and when does it start?
CARF is the OECD’s global standard for automatic exchange of crypto data between countries — the international counterpart of DAC8. First-wave jurisdictions collect data from 2026 and exchange it in 2027; others, including the US, Singapore, the UAE and Hong Kong, have committed to first exchanges in 2028.
Is MiCA a crypto tax?
No. MiCA is the EU’s market regulation for crypto — it licenses exchanges (CASPs), regulates stablecoins and protects consumers. It is not a tax rule, but it matters because it formalizes the exchanges that must then comply with DAC8/CARF tax reporting. Stablecoin rules applied from 30 June 2024, CASP rules from 30 December 2024, with a transition ending 1 July 2026.
What is Form 1099-DA?
Form 1099-DA is the US report that digital-asset brokers file with the IRS (and send to you). Brokers report gross proceeds for sales from 2025 and add cost-basis reporting from 2026. Because brokers only know activity on their own platform, the reported proceeds can overstate your real gain if your cost basis is incomplete — so reconciling your full history matters.
This explainer is general in nature and isn’t a substitute for personalised tax or legal advice. Implementation dates can change and vary by country; confirm specifics with the official source and your national authority.