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kointax vs. manually declaring crypto in Renta Web: why use specialized software?

Why not just manually declare crypto in AEAT's Renta Web? Comparison of advantages of using kointax.

Equipo kointax·October 26, 2026·3 min read

kointax vs. manual declaration in Renta Web

You technically can calculate gains manually and enter them in Renta Web — feasible for users with few simple operations.

Why it gets complicated quickly:

  • Global portfolio FIFO is error-prone to calculate manually
  • DeFi users can have hundreds of swap events
  • Multiple exchanges/wallets require complex consolidation
  • Models 172/173 must be consistent with IRPF

kointax vs. manual:

FeatureManualkointax
Auto global FIFO
300+ exchange imports
Auto DeFi classification
Models 172/173 generated
10 operations time~2h~15min
500 operations timeWeeks~1h

Manual is OK for: <10 operations/year, only simple buy/sell, no DeFi.

kointax needed for: Active DeFi, staking/farming/NFTs, multiple exchanges/wallets, needs Models 172/173.

👉 Save time with kointax

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