Crypto Platforms to Report User Transactions to Spanish Tax Authorities from 2026

Starting January 2026, a significant regulatory shift will affect both cryptocurrency firms operating in Spain and the individuals who use their platforms. Under new regulations approved by the Spanish Tax Agency (AEAT), crypto exchanges and wallet providers will be obligated to report detailed information about user transactions—both domestic and cross-border. This initiative aligns Spain with the OECD’s Crypto-Asset Reporting Framework (CARF) and marks a decisive step towards tighter tax compliance in the digital asset space.

For individuals and entities holding or trading crypto assets in Spain—or considering doing so—the implications are far-reaching. At Lullius Partners, as tax lawyers in Spain, we are already assisting a growing number of clients in adapting their investment structures and reporting obligations in light of these evolving requirements.

Who Will Be Affected?

From January 2026 onwards, all entities classified as crypto-asset service providers (CASPs), including both Spanish-based firms and international platforms serving Spanish residents, will need to:

  • Report the identities of their users (including non-residents).
  • Declare annual purchase, sale, and exchange operations.
  • Provide information on crypto holdings and wallet balances.

This new reporting obligation applies regardless of whether the crypto activity is conducted through decentralized platforms, custodial wallets, or cross-border exchanges.

Implications for Crypto Investors in Spain

For investors—particularly expats or digital nomads under the Beckham Law regime—the new regulation means greater scrutiny and an increased need for proactive tax planning. Failing to properly disclose crypto holdings or gains may result in penalties, audits, or even criminal proceedings under Spain’s anti-fraud framework.

We anticipate that these developments will lead to:

  • Increased transparency requirements for high-net-worth individuals and crypto entrepreneurs.
  • A rise in voluntary disclosures and tax regularizations ahead of the 2026 deadline.
  • More cross-border coordination between tax authorities, especially within the EU and OECD.

As crypto taxation lawyers in Spain, we advise clients not to wait until the new rules take effect. Instead, this is the right time to review your tax residency status, asset declarations (Modelo 720 and the upcoming Modelo 721), and any potential wealth tax exposure.

How We Can Help

At Lullius Partners, we provide top-notch legal and tax advisory services for crypto investors, family offices, and private wealth clients across Spain and the Balearic Islands. As a top-ranked boutique law firm in Mallorca, we specialise in complex tax compliance matters with a strong international dimension.

We frequently work with:

  • International clients relocating to Spain and seeking guidance under the Beckham Law.
  • Crypto founders and high-net-worth individuals requiring structuring advice and reporting assistance.
  • Cross-border tax compliance and voluntary disclosures involving unreported assets.
  • Tax audits related to the Beckham Law regime or the regularisation of capital gains arising from the sale of cryptocurrencies.

If this development affects you or your clients, we recommend scheduling a consultation with our team of crypto taxation lawyers in Spain.

Interested in speaking with our team? Contact our expert tax lawyers in Mallorca for bespoke advice on crypto taxation, international wealth structuring, or tax compliance with the latest Spanish tax obligations.

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