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


