How to Declare Cryptocurrencies in the Income Tax Return in Spain (2025 tax year)
Discover how to correctly declare your cryptocurrencies in the 2025 Income Tax Return in Spain. We explain which transactions are taxable, how to apply the FIFO method, what documentation you need, and what risks exist if you do not do it properly. Clear and updated guide with professional advice on crypto taxation.
Errors in CoinTracking, Koinly, and others: how to fix them in 2025
Thousands of users reach the tax season with the same nightmare: CoinTracking or Koinly import their transactions, but the figures DO NOT add up. Negative balances, invented income, misinterpreted swaps, duplicated transactions, or complete gaps in chains like BNB Chain, Polygon, or Solana. In this guide, I analyze why this happens, what mistakes taxpayers make, what tax risks they face, and how to identify them before it is too late. I also explain how we at IN DIEM & Cryptoveritas 360 correct these errors professionally so that your report remains clean, traceable, and tax-secure.