New crypto regulations in Spain in 2026

Introduction

The cryptocurrency market has experienced explosive growth over the last decade. More and more investors in Spain are participating in cryptocurrency trading, buying assets such as Bitcoin, Ethereum, or emerging tokens within the Web3 ecosystem.

However, this growth has also led to increased regulatory oversight. Governments are seeking to establish clear rules to improve tax transparency, prevent fraud, and protect users.

In this context, Spain announced on March 10, 2026, new regulatory measures related to the declaration and supervision of cryptocurrencies, especially regarding the information received by tax authorities.

These measures do not mean that web3-21321" target="_blank" rel="noopener noreferrer">cryptocurrencies are illegal or that trading is prohibited. Rather, they seek to integrate the sector into the traditional financial and tax system.

For Spanish investors, understanding these new rules is essential to operate safely and comply with the tax authorities.

What changed in cryptocurrency regulation in Spain in 2026

The new regulations introduce a higher level of transparency in the crypto market through tax reporting systems.

The main objective is for the Tax Agency to be able to know with greater precision the activity of users on exchanges and trading platforms.

Key tax reporting forms

Among the most important changes are several information forms.

Form 172

This form requires custodians and exchanges to report on the cryptocurrency balances of their users.

Platforms must report:

• user identity
• type of cryptocurrency
• year-end balance
• approximate valuation in euros

This allows the tax authorities to know the crypto assets of users residing in Spain.

Form 173

Form 173 requires reporting all operations carried out with cryptocurrencies.

It includes information on:

• purchases and sales
• exchanges between cryptocurrencies
• transfers
• payments made with crypto

These data are sent directly by the platforms that custody or intermediate with digital assets.

Form 721

Form 721 applies to cryptocurrencies stored on foreign platforms.

Users residing in Spain must file it if the total value of their cryptocurrencies abroad exceeds €50,000.

This form is for information purposes, but failing to file it can lead to sanctions or tax audits.

What these rules mean for cryptocurrency users

For investors and traders in Spain, these regulations mainly change the way the tax authorities obtain information about their operations.

Previously, control was limited and depended largely on what users declared themselves.

Now, the system is much more transparent.

Tax authorities will receive data directly from exchanges

Exchanges and custodians must send periodic information about their clients' operations and balances.

This means that the tax authorities can cross-reference data between:

• tax returns
• activity on exchanges
• cryptocurrency balances

If there are discrepancies, a tax review is likely to be initiated.

Gains are still subject to personal income tax (IRPF)

Gains derived from cryptocurrency trading are considered capital gains.

This includes operations such as:

• selling cryptocurrencies for euros
• exchanging one cryptocurrency for another
• using cryptocurrencies to pay for goods or services

These gains are integrated into the savings base of the IRPF, with rates that can range approximately between 19% and 28% depending on the tax bracket.

Crypto regulatory changes in Spain during 2025

The measures announced in 2026 did not appear suddenly. In reality, they are part of a regulatory process that intensified during 2025.

Greater tax surveillance

During that year, the tax authorities began to use cross-referencing of data between exchanges and taxpayers to investigate possible tax irregularities.

This strategy allowed for the detection of users who had not correctly declared their crypto gains.

Adaptation to the European MiCA framework

Spain also began to adapt its legislation to the European MiCA (Markets in Crypto-Assets) framework.

This regulation seeks to:

• protect investors
• regulate crypto service providers
• improve sector transparency

Greater control over exchanges

Authorities also strengthened control over trading platforms.

Exchanges operating in Spain must comply with:

• tax reporting requirements
• anti-money laundering regulations
• financial transparency standards

How to adapt to the new crypto regulation in Spain

For investors, these new rules do not have to be a problem if tax information is managed correctly.

Here are some practical recommendations.

Keep a record of all transactions

It is essential to maintain a clear history of operations:

• purchases
• sales
• swaps between cryptocurrencies
• staking rewards
• airdrops

This will make it easier to calculate gains or losses when filing your tax return.

Use tax tracking tools

There are specialized tools that allow you to generate tax reports from your trading history.

These tools help calculate:

• capital gains
• deductible losses
• crypto investment performance

Correctly declare cryptocurrencies abroad

If your assets are on international exchanges and exceed €50,000, you must file form 721.

Failure to do so can lead to fines or audits.

Understand that the tax authorities have more information

With the new reporting systems, assuming that crypto operations go unnoticed is increasingly unrealistic.

The best strategy is to declare correctly and maintain tax transparency.

Operating on professional exchanges: the case of WEEX

As the crypto sector matures, many traders are looking for platforms that offer professional tools and global market access.

WEEX Exchange is one of the cryptocurrency platforms gaining popularity within the Web3 ecosystem.

Among its main features are:

• access to a wide variety of cryptocurrencies
• advanced cryptocurrency trading tools
• crypto futures trading markets
• liquidity global

For traders who wish to actively operate in the crypto market, using modern platforms like WEEX can facilitate access to trading opportunities and digital asset management.

The future of crypto regulation in Spain

Everything indicates that cryptocurrency regulation will continue to evolve in the coming years.

The objective of the authorities is not to prohibit the use of digital assets, but to integrate them into the financial system.

This implies:

• greater transparency
• better rules for exchanges
• protection for investors

In the long term, this process can contribute to legitimizing the crypto market and attracting more institutional capital to the sector.

For Spanish users, the key will be to stay informed and adapt to the new rules while taking advantage of the opportunities offered by the Web3 ecosystem.

Frequently Asked Questions about cryptocurrency regulation in Spain

Is it mandatory to declare cryptocurrencies in Spain?

Yes. Gains obtained through trading or the use of cryptocurrencies must be declared in the IRPF as capital gains.

What is the cryptocurrency form 721?

It is an information form that must be filed by residents in Spain who have more than €50,000 in cryptocurrencies on foreign platforms.

How do the tax authorities know if I have cryptocurrencies?

Thanks to forms 172 and 173, exchanges can report user balances and operations to the Tax Agency.

What happens if I do not declare my cryptocurrencies?

Sanctions can include fines and interest. In serious cases, sanctions can reach up to 150% of the defrauded amount.

Do exchanges report my operations to the tax authorities?

Yes, in many cases exchanges and custodians must report information about the balances and transactions of users residing in Spain.

Disclaimer

WEEX and its affiliates provide digital asset exchange services, including derivatives trading and margin trading, only where it is legal to do so and for users who meet the participation requirements. All content is general information and does not constitute financial advice. You should seek financial advice before trading. Cryptocurrency trading is a high-risk activity and can lead to the total loss of your assets. By using WEEX services, you accept all related risks and terms. Never invest more than you can afford to lose. Consult our Terms of Use and our Risk Disclosure for full details.