Buying a home in Spain without carrying out the proper checks could leave you responsible for tax debts owed by the previous owner, house hunters have been warned.

Experts at property news portal Idealista explained in a report this week that in the most serious cases, the property could even be seized by Spain’s tax authority.

The risk stems from a legal mechanism known as ‘afeccion fiscal’ (tax liability attached to a property), which allows certain unpaid taxes to remain linked to the home itself, even after it has been sold.

This means that although ownership changes, the property can still be held liable for outstanding tax bills arising from the previous owner’s transactions.

When can the tax office pursue the new owner?

Spain’s tax agency can pursue a property if taxes relating to its sale or transfer were incorrectly declared or left unpaid.

This can happen if the seller declared the property was worth less than its true value to reduce tax, asupplementary tax assessment remains unpaid, transfer taxes were not paid correctly or errors or irregularities are later discovered in the tax declaration.

In these situations, the tax authority may seek to recover the debt from the property itself, potentially affecting the new owner, even if they bought the home in good faith.

Which taxes are involved?

The most common taxes that can trigger this liability include:

• Property Transfer Tax (ITP) on second-hand homes, particularly if the declared purchase price is later challenged.
• Inheritance and Gift Tax (ISD) on inherited or gifted properties.
• Stamp Duty (AJD) in certain property transactions.

In most cases, the tax liability remains attached to the property for up to five years, although the exact period depends on the type of tax and individual circumstances.

Could the property be repossessed?

In the most serious cases, the property could be repossessed.

If the outstanding tax debt is not paid and normal collection procedures fail, Spain’s tax office can begin enforcement proceedings and ultimately place an embargo on the property.

However, this is not an immediate process.

The authorities must first notify the taxpayer, provide opportunities to settle the debt and follow formal legal procedures before any seizure can take place.

How can buyers protect themselves?

Before completing a purchase, experts recommend carrying out several checks:

• Obtain a nota simple from the Land Registry to identify any registered charges, mortgages or tax liabilities.
• Check the property’s cadastral record to confirm key details such as ownership and boundaries.
• Ask for proof that IBI (council tax) and other local taxes have been paid.
• Request a zero-debt certificate from the local council where appropriate.
• Obtain a certificate confirming there are no outstanding community fees owed to the homeowners’ association.

Although Spanish law offers some protection to buyers acting in good faith, that protection does not automatically remove existing tax liabilities attached to the property.

For that reason, legal experts recommend carrying out thorough due diligence before signing a purchase contract to avoid inheriting expensive problems from a previous owner.