How does the Spanish Tax Agency deal with the use of cryptocurrencies for tax fraud?

March 24, 2025

Cryptocurrencies and tax fraud in Spain

In recent years, the use of cryptocurrencies like Bitcoin and Ethereum has grown exponentially in Spain, especially in economically active areas such as Mallorca. However, this boom has also attracted the attention of the Spanish Tax Agency, which has intensified its efforts to prevent tax fraud related to crypto assets.

At Resitax, a tax consultancy in Mallorca, we stay up-to-date on the latest legislative and tax developments. Below, we explain how this issue is being addressed in Spain and what implications it may have for individuals and businesses. Also, read our article on how cryptocurrencies are taxed in Spain.

Tax Agency concerns regarding the use of cryptocurrencies

The Spanish Tax Agency (AEAT) has identified several risks related to the use of cryptocurrencies:

  • Transaction anonymity: Although transactions are recorded on the blockchain, identifying the actual owners remains a major challenge.

  • Tax avoidance: Some taxpayers may not declare the profits obtained with cryptocurrencies or the origin of the funds used to acquire them.

  • Lack of clear regulation: Although important steps are being taken, there are still gray areas in cryptocurrency taxation.

  • Risk of money laundering and financing of illicit activities, taking advantage of the decentralized nature of these digital assets.

Current measures of the Tax Agency to combat cryptocurrency fraud

Inclusion in inspection plans

The Spanish Tax Agency has included in its inspection plans the monitoring of new online business models and electronic payment methods, including cryptocurrencies.

Information requests to third parties

The Tax Agency has requested information from financial entities, trading companies and exchange houses about the owners and amounts of cryptocurrency transactions.

Sending informational letters

Letters have been sent to taxpayers who have traded cryptocurrencies to remind them of their obligation to declare the gains obtained in their income tax return.

Form 720 and assets abroad

Taxpayers are required to report virtual currencies held abroad on form 720.

International collaboration

International cooperation is sought to combat the use of cryptocurrencies in money laundering and the financing of terrorism.

Systems adaptation

The Spanish Tax Agency is strengthening the adaptation of its information systems to prevent fraud in electronic commerce and through the use of electronic wallets.

Operator research

The Tax Agency is investigating operators who carry out illicit or opaque transactions with cryptocurrencies.

Reporting obligation

Efforts are underway to require intermediaries and exchange houses to register and report suspicious transactions.

Analysis of deanonymization techniques

Analytical methods are being used to identify cryptocurrency account holders, such as "de-anonymization" techniques.

What can be expected in the immediate future?

The trend indicates that tax controls on cryptocurrencies will become increasingly comprehensive. These are some of the initiatives underway:

  • Registration and reporting obligation for exchanges and wallet custodians.

  • Creation of a centralized database with wallet addresses and account holders.

  • Strengthening voluntary self-declaration to regularize previous situations.

  • New regulations promoted by the Finance and Public Service Commission to regulate the role of intermediaries.

How does this affect taxpayers in Spain?

If you live in Spain and have traded or plan to trade cryptocurrencies, it is essential that you seek proper advice. The Spanish Tax Agency (AEAT) is taking decisive action, and failure to declare correctly can have serious consequences.

  • Requirements.

  • Economic sanctions.

  • Inclusion in tax fraud investigations.

How can Resitax's advice in Mallorca help you?

At Resitax, tax advisors in Mallorca, we specialize in modern and digital taxation. We can help you with:

  • Declaration of profits obtained from cryptocurrencies.

  • Regularization of previous operations.

  • Compliance with Model 720.

  • Legal and secure tax planning with crypto assets.

Being well advised makes the difference between operating safely or facing unexpected penalties.

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