Crypto margin trading in Spain: taxation
How it works: Leveraged positions (e.g., 10x). Example: €1,000 collateral controls €10,000 BTC position.
Gains/losses: Capital gain/loss in base del ahorro (19-28%). Losses can offset other capital gains; uncompensated losses carry forward 4 years.
Margin interest: Reduces net PnL. Treated as cost reducing the gain or increasing the loss.
Liquidation: Collateral lost = capital loss in the year of liquidation.
kointax imports margin trading history from Binance, Bybit, OKX and calculates net PnL including margin interest.