Many property owners in Spain assume that a home is only tax-relevant if it is rented out. This assumption is incorrect. Spain’s tax authority, the Agencia Tributaria, has made it clear that second homes must be declared in the annual income tax return even if they are empty or used solely for private purposes.
According to the latest figures from the National Statistics Institute (INE), around three million Spaniards owned more than one property in 2024. A significant number of these owners may unknowingly face tax disadvantages by failing to declare additional properties correctly — or at all.
Spa.in Press
Tax reality versus common misconceptions
The obligation to declare a second property is not new. However, enforcement has become increasingly rigorous in recent years. This reflects both the pressure on Spain’s housing market and a political commitment to close tax loopholes and curb informal use of residential property.
Crucially, tax liability does not depend on whether a property generates income. Ownership alone is sufficient.
Who is affected?
Any individual who owns a property in Spain in addition to their primary residence is required to declare it — regardless of whether the property is:
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rented to tenants
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used as a holiday home
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or left permanently vacant
In the income tax return, the property must be listed under “properties not linked to economic activity” and identified as a second home.
Two different forms of taxation
The tax treatment depends on how the property is used:
Rented properties
Rental income is classified as income from real estate assets and is subject to income tax. Certain expenses, such as maintenance or management costs, may be deducted.
Empty or privately used properties
Even in the absence of rental income, the tax authority applies a deemed income on the assumption that ownership itself provides an economic benefit. This amount is added to the taxpayer’s taxable income.
How deemed income is calculated
The calculation is based on the property’s cadastral value (valor catastral):
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2% if the cadastral value has not been updated in the last ten years
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1.1% if the cadastral value has been revised within the last ten years
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1.1% of 50% of the purchase price if no cadastral value exists
This figure increases the tax base even when the property generates no actual income.
Consequences of non-declaration
Failing to declare a second home may be treated as a tax infringement. Property owners risk backdated tax assessments, financial penalties and interest charges. In more serious cases, the matter may be investigated as tax evasion.
Conclusion
In Spain, owning property carries ongoing tax obligations — even when a second home remains empty. Property owners are advised to review their tax position regularly and ensure full compliance with declaration requirements. Proper reporting remains the most effective way to avoid costly disputes in an increasingly strict regulatory environment.
