Can I declare my crypto in Spain without software?

Short answer: If you have fewer than 30 simple transactions, you could try manually. For anything more complex, the risk of error is very high.

When manual is possible

1. Fewer than 30 total transactions
2. Only centralized exchanges (no DeFi, no on-chain wallets)
3. Only buy/sell operations (no staking, airdrops, lending)
4. One or very few exchanges
5. Enough time for manual FIFO calculations

The real cost of "saving" by doing it manually

Errors can result in AEAT penalties of 10-150% of the difference, plus interest. kointax starts at €29/year — minimal cost for peace of mind.

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