Koinly + Binance in Spain: common problems
Problem 1: Missing transactions — Binance API only goes back 6 months; older transactions need CSV
Problem 2: Stablecoins don't reconcile — Earn, Launchpool, auto-conversions often missed
Problem 3: Binance Futures — Spanish derivative tax rules not implemented in Koinly
Problem 4: BNB commission micro-transactions — Each creates a potential taxable event
The complete solution: kointax with optimized Binance integration (API + CSV + Spanish rules for futures and BNB commissions).