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The 7 most common mistakes when declaring crypto in Spain (and how to avoid them)

Analysis of the most frequent mistakes Spanish investors make when declaring cryptocurrencies.

Equipo kointax·July 15, 2025·8 min read

The 7 most common mistakes when declaring crypto in Spain

  1. Not declaring losses — mandatory, and needed for 4-year offset
  2. Not filing Models 172 and 173 — mandatory for foreign exchange accounts (€250/error fine)
  3. Treating swaps as non-taxable — every crypto swap is a taxable "permuta" in Spain
  4. Not including fees correctly — buy fees add to acquisition cost; sell fees reduce sale price
  5. Wrong FIFO method — Spain requires global FIFO per asset, not per exchange
  6. Misclassifying staking — staking is "capital income", not capital gain
  7. Forgetting Model 720 — mandatory for >€50,000 in foreign exchanges

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