Crypto futures and derivatives in Spain: how to declare them

Futures contracts, options and other cryptocurrency derivatives are complex financial instruments with their own tax rules. The legal basis exists, although specific criteria for crypto are still under development.

Cryptocurrency Futures

A futures contract is a standardized agreement to buy or sell an asset at a fixed price at a future date. The profit or loss is realized upon closing the position.

Tax classification: Capital gain or loss based on savings.

Time of imputation: When the position is closed (or liquidated), not when it is opened.

Calculation basis:

Result = (Closing price − Opening price) × Number of contracts − Total commissions

Cryptocurrency options

Options give the right (not the obligation) to buy (call) or sell (put) crypto at a certain price. Treatment depends on what position you take:

Option Buyer (long)

• Premium paid: Option acquisition cost (not deductible until closing).
• If you exercise the option: The premium is added to the cost of the underlying acquired.
• If you sell the option: Profit/loss = sale price − premium paid.
• If it expires worthless: The premium paid is a capital loss on the expiration date.

Options seller (short)

• Premium collected: Income that is taxed as capital gain in the collection period (or at closing).
• If the option is exercised: The result of the position in the underlying is calculated normally.
• If it expires worthless: The premium collected remains as profit.

Contracts for difference (CFDs)

Already mentioned in previous articles on leverage. Classified as capital gain/loss when closing each position.

Derivatives exchanges and reports

The large crypto derivatives exchanges (Deribit, CME, Binance Futures, OKX, Bybit) do not withhold at source for Spanish taxpayers. All responsibility for reporting falls on the taxpayer.

History extraction: Download the exchange's P&L (Profit & Loss) CSV, which shows you the net result per closed position. It is the information you need for the declaration.

Derivative Loss Offset

Losses from crypto derivatives are capital losses from the savings base:

• They are offset with capital gains from the same year.
• If there are excess losses, they are carried forward for 4 years.

What about derivative tokens (perp tokens, leveraged tokens)?

Some exchanges issue tokens such as BTCUP, BTCDOWN or margin tokens. These tokens themselves are treated like ordinary cryptocurrencies: capital gain/loss upon transmission. Its internal leverage mechanics affect its price, but do not change the tax classification.

Conclusion

Crypto derivatives are taxed as capital gains/losses on a savings basis, the same as spot trading, but with the particularity that the taxable event occurs when closing the position (not when opening). The complexity is in the volume of operations and in keeping the correct record of premiums, P&L and commissions.