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For active traders and DeFi users

Trading and DeFi:
thousands of transactions, one return

Every swap of one crypto-asset for another is a taxable sale for an individual. Active trading therefore creates hundreds or thousands of taxable events across exchanges, wallets and networks. Without a reliable reconstruction of purchase prices, the tax cannot be correctly calculated or defended.

How common situations are treated

SituationTreatment
Swap on an exchange or DEXsale of a crypto-asset, income valued at fair value on the day of the exchange
Transfer between your own walletsnot a sale, but it must be matched in the data or it is easily taxed by mistake
Fees paid in cryptoexchange of a crypto-asset for a service, so also a sale
Staking, LP positions, airdropsthe law has no explicit rule for each type. An approach has to be chosen, justified and applied consistently
Perpetuals and futuresderivatives with a different regime from spot trades

The same approach every year. For staking rewards or LP positions, a justified and consistent approach matters more than finding the most favourable reading for one year. An audit also looks at whether the approach changed depending on what suited.

What we do with the data

When to consider an s.r.o.

More on the page A company that trades.

How it works

  1. ConsultationA list of exchanges, wallets and networks and an approximate number of transactions. From that we set the scope and price.
  2. RecordsExports, read-only API keys or public addresses. We never need private keys or seed phrases.
  3. ReconciliationMerging sources, matching transfers, filling in rates and calculating the tax base.
  4. ReturnThe report and the return with an annex, filed for you if you wish.

Price

ServicePrice
Reconciliation Basic: 1 to 2 exchanges, up to 300 transactions, no DeFi€149
Reconciliation Standard: more sources, staking and airdrops, up to 1,500 transactions€349
Reconciliation Complex: DeFi, LP positions, defunct exchanges, several yearsfrom €690
Full service with a tax advisorfrom €250 (2% of the § 8 tax base, capped at €1,500)

From our practice

Cases are anonymised.

Related

Frequently asked questions

Is every swap taxable?

Yes. Exchanging a crypto-asset for another crypto-asset is a sale under the law, and the income is valued at fair value on the day of the exchange.

Is staking taxed when the reward is credited?

The law does not explicitly address every type of staking and DeFi. We therefore choose an approach, justify it in writing and apply it consistently across all years.

Do you need my private keys?

No. Exports, read-only API keys or public wallet addresses are enough.

I have tens of thousands of transactions. Can you handle it?

Yes. For large volumes of on-chain data we use our own tools and verify the result against balances.

My exchange shut down and I have no exports. What now?

Purchase prices can be reconstructed from other sources: remaining statements, on-chain data, bank transfers and historical rates.

Can I offset losses on one exchange against gains on another?

Yes. Within one year, crypto gains and losses offset each other regardless of where you traded.

Sources: Act No. 595/2003 Coll. on Income Tax, § 2(ai) and § 8(1)(t), and the Slovak Financial Administration’s practical guidance on income from the sale of crypto-assets.

Transactions in a mess? We will sort them out.

Tell us where you trade and roughly how many transactions you have. We will give you the scope and price before any work starts.

We reply within 24 hours. Payment in EUR, USDC or BTC.