From 1 January 2026 exchanges require your tax residence and TIN, and the Slovak tax authority receives data on your 2026 trades in 2027: from providers reporting in Slovakia by 31 May, from elsewhere in the EU by 30 September. We go through what the exchanges will report about you, compare it with your returns and resolve mismatches before the data arrives.
What DAC8 is and why your exchange asks for a TIN is explained on the page Exchange asking for your TIN.
The report contains annual totals for each type of crypto-asset. We compare each total with what is in your return.
| Data in the report | What we compare it with |
|---|---|
| Sales for euros and other currencies | crypto income in your return for that year |
| Crypto-to-crypto exchanges | taxable exchanges and their fair value |
| Purchases | the cost basis of coins you later sold |
| Transfers to private addresses | evidence that these were your own wallets and not a sale |
If the check results in an amended return, we deduct the price of the check from it. If data from several exchanges and wallets needs merging first, the price follows the transaction processing price list.
Before filing your 2026 return, that is by 31 March 2027. You file the return before the tax authority receives the exchange data, and it will compare that data with the return already filed.
Yes, years still within the assessment period. The 2026 report does not contain them directly, but it can point to them through the cost basis.
From €149. If it results in an amended return, we deduct the price of the check from it.
Yes. A company is also a crypto-asset user and the exchange reports on it the same way as on an individual.
Yes. A provider in another EU state reports data to its own tax authority, which sends it to Slovakia by 30 September of the following year.
Source: Act No. 359/2015 Coll. on the automatic exchange of information on financial accounts and crypto-assets, as amended by Act No. 200/2025 Coll.
Tell us which exchanges and wallets you use and for which years you filed a return. We will tell you what the check involves and what it will cost.
We reply within 24 hours. Payment in EUR, USDC or BTC.