Aave and Compound in Spain: DeFi lending taxes
Supply (lending):
- Deposit ETH → receive aETH/cETH: NOT a taxable event (deposit, not sale)
- Interest accumulates automatically in token balance
- On withdrawal: ETH received minus ETH deposited = capital income
Borrow: Taking a loan = NOT taxable (it's debt, not a gain). Interest paid = potentially deductible if loan used for investment.
Collateral liquidation: Forced sale = taxable event. Capital gain/loss = liquidation price - collateral acquisition cost.
Governance tokens (AAVE, COMP): Capital income at market value when received.
kointax imports complete Aave/Compound history.