Seizure of Cryptocurrencies in Spain: Can the Tax Agency Confiscate Your Bitcoin?

Cryptocurrencies are assets stored in private keys, without physical intermediaries. Can the Tax Agency seize them? The short answer is: yes, under certain conditions. And the process is becoming increasingly sophisticated.

Legal Basis for Crypto Seizure

Cryptocurrencies are considered part of the taxpayer's assets (General Tax Law and established AEAT doctrine). As such, they are seizable, just like money in a bank account, vehicles, real estate, or any other asset.

Article 169.2 of the General Tax Law establishes the order of seizure:

1. Cash or funds in accounts held at credit institutions.
2. Credits, effects, securities, and realizable rights.
3. Salaries, wages, and pensions.
4. Real estate.
5. Interests, rents, and yields.
6. Commercial or industrial establishments.
7. Precious metals, gemstones, jewelry, goldsmith items, and antiques.
8. Other goods and rights.

Cryptocurrencies would fall under category 8 ("other goods and rights") or even category 2 (credits and realizable rights if held in an exchange).

Seizure of Crypto in Exchanges (Custodial)

The easiest way for the Tax Agency to seize cryptocurrencies is through custodial exchanges with a presence in Spain:

1. The AEAT issues a seizure order to the exchange.
2. The exchange is obligated to block and transfer the seized cryptocurrencies to the AEAT's account.
3. The AEAT liquidates (sells) the crypto and applies the proceeds to the debt.

Exchanges with a regulated presence in Spain (Bit2Me, Coinbase Europe, etc.) must comply with AEAT seizure orders. Exchanges without a regulated entity in Spain may be harder to enforce against, but the AEAT can request cooperation through international treaties.

Since When Can the AEAT Seize Crypto in Exchanges?

The AEAT currently has:

• Data from Form 172 (starting in 2024): balances and transactions reported by exchanges in Spain.
• A mechanism for requesting information from financial entities.
• Cooperation with authorities in other EU countries under DAC8.

The automatic exchange of crypto data within the EU (DAC8) is under implementation. Once fully operational, the AEAT will automatically receive data from European exchanges.

Seizure of Crypto in Private Wallets (Self-Custody)

Seizing crypto in private wallets (MetaMask, hardware wallets, etc.) is much more complex:

Can the AEAT Seize My Cold Wallet?

• The AEAT can issue a seizure order for the cryptocurrency you own.
• However, it requires you to voluntarily hand over the private keys or enforce their surrender.
• In practice, if you do not declare that you own the crypto, the AEAT will not know it exists (unless they discover it through blockchain analysis or transaction chains from known exchanges).

Blockchain Analytics and Wallet Localization

The AEAT works with blockchain analytics companies (Chainalysis, Elliptic) that can:

• Trace transactions from KYC exchanges to private wallets.
• Identify wallets associated with a taxpayer.
• Locate "hidden" assets in DeFi protocols, mixers, etc.

The Seizure Process in Practice

When the AEAT executes a crypto seizure:

1. Seizure Order: notification to the debtor and/or the custodian (exchange).
2. Asset Freeze: the exchange blocks the assets.
3. Provisional Deposit: the assets remain frozen until resolution.
4. Liquidation: the AEAT sells the crypto at auction or directly on the market. The AEAT uses exchanges to facilitate market sales.

The Implicit Tax of Seizure

An important aspect: when the AEAT seizes and sells your crypto, the taxpayer generates a capital gain or loss (GPO) (forced transfer of cryptocurrencies):

• It is considered a transfer for IRPF purposes.
• GPO = AEAT's sale price - acquisition cost.
• This GPO must be declared in the tax return for the year of the seizure.
• This additional tax is added to the original debt (a vicious cycle).

Judicial Seizure vs. Administrative Seizure (AEAT)

• Administrative Seizure (AEAT): Faster, no prior judicial authorization required. Only an enforceable title is needed (unpaid tax debt + enforcement order).
• Judicial Seizure (Private Creditors): Requires a final court ruling. The process is slower but targets the same assets.

How to Protect Yourself Legally (Within the Law)

1. Pay Your Tax Debts on Time: The simplest way to avoid seizure.
2. Request Payment Installments from the AEAT if you face difficulties: the AEAT may grant payment plans (Art. 65 LGT).
3. Bank Guarantee: For large debts, a bank guarantee can suspend the enforcement of the seizure while it is being appealed.
4. Administrative Appeals: If the debt is improper, filing an appeal or an economic-administrative claim suspends the execution of the seizure when a guarantee is provided.

What You Should NOT Do: hide assets, transfer them to third parties to avoid seizure (this could constitute the crime of asset concealment, Art. 257 of the Penal Code).

Updated: April 2026 | Fiscal Year: 2025