Have you missed declaring the imputed income tax in Spain?

This is what applies – and why it's important to act in time

Maybe you didn't know it existed, maybe you thought the property didn't need to be declared because it was never rented out, or it simply never got done. Every year, many property owners in Spain discover that they have missed declaring the so-called imputed income tax via Modelo 210.

The question then quickly becomes: What happens now?

The positive thing is that the situation can be corrected and that it can make a big difference if you act before the Spanish tax authority (AEAT) does.

In this article, we go through what applies if the imputed income tax has not been declared, what consequences may arise, and why timing plays a bigger role than many think.

What is the imputed income tax in Spain?

If you own a property in Spain but are not tax-resident there, you are in most cases obliged to declare a so-called imputed income (Modelo 210) – even if the property is only used privately or stands empty for parts of the year.

Many are surprised by this because they have already paid the local property tax and there has been no actual rental income. But according to Spanish regulations, you are still considered to derive a theoretical benefit from the property, which forms the basis for taxation.

The rules are found in the Spanish law for non-residents (TRLIRNR) and mean that an imputed income is calculated based on the property's valor catastral (assessed value).

According to article 28 TRLIRNR, together with article 85 in LIRPF, an urban property at the owner's disposal should be taxed through an imputed income – regardless of whether the property is used privately, stands empty, or does not generate any actual income.

The calculation is normally based on:

• 1.1% of valor catastral if the assessed value has been revised in the last ten years
• 2% of valor catastral if no revised value exists

On this amount, tax is then added:

• 19% for persons residing within the EU/EEA
• 24% for persons residing outside the EU/EEA

What happens if you haven't declared?

The first important thing to know is this:

If you act before the Spanish tax authority (AEAT)

If you voluntarily correct the situation before the Spanish tax authority contacts you, you are normally covered by the rules of voluntary correction (regularización voluntaria).

This practically means that you usually avoid the regular penalty system with fines and instead are covered by a system with late fees, regulated in article 27 of the Ley General Tributaria (LGT).

The difference can be significant – both economically and administratively.

If the tax authority acts first

If AEAT, however, first discovers that a declaration is missing and initiates a check, sends a request, or starts an audit case, the situation looks different.

Then the case may instead be covered by the penalty rules in articles 191–193 LGT, where penalties in some cases can amount to between 50% and 150% of the unpaid tax.

This is also why many advisors recommend reviewing the situation before any contact from AEAT occurs.

How the late fee works in case of voluntary correction

If you voluntarily correct the situation, the rules in article 27 LGT are used, where the fee depends on how long the delay is.

Delay up to 12 months

The late fee increases progressively:

• 1 month late = 1%
• 3 months late = 3%
• 6 months late = 6%
• 12 months late = 12%

The rule is 1% for the first month plus an additional 1% for each full month thereafter.

During the first twelve months, no interest on arrears is charged, as the progressive fee is considered to cover the cost.

Delay longer than 12 months

If the delay exceeds one year, the following applies:

• Fixed late fee of 15%
• Interest on arrears on the unpaid amount

For 2026, the interest amounts to 4.0625% according to current regulations.

The important thing to understand, however, is that this still often means a significantly lower cost than if the tax authority had acted first.

There is also something called prescription

Many are surprised that it is not always necessary to correct all years back in time. In Spain, there is normally a statute of limitations of four years for tax matters according to article 66 LGT. But when it comes to Modelo 210 for imputed income tax, there is an important detail that affects the calculation:

The declaration can be submitted during the entire calendar year after the income year.

This means, for example, that: The imputed income tax for 2025 can be declared until December 31, 2026.

Only thereafter does the statute of limitations begin to count.

A simplified example

If someone discovers in 2026 that a declaration is missing for several years back, it does not automatically mean that all years can still be claimed. In some situations, the oldest years may already be statute-barred, while later years may still need to be corrected. Each situation, however, needs to be assessed individually, especially since timing and any previous contact with AEAT can affect the assessment.

But be careful – some things can interrupt the prescription

There is an important thing to know:

According to article 68 LGT, the statute of limitations can be interrupted if, for example:

• AEAT contacts you or initiates a check
• You yourself take certain formal actions
• An appeal or legal proceeding is initiated

When this happens, a new four-year period begins to run. This is also why timing often becomes crucial. Understanding your situation before the tax authority acts can in some cases make a big difference in both scope and cost.

What should you do if you think you have missed the imputed income tax?

The most important thing is to not ignore the situation – but also not to panic.

Start by finding out:

1. Which years are actually missing

2. If certain years may already be statute-barred

3. What valor catastral applies to the property

4. If there is an opportunity for voluntary correction before AEAT acts

In many cases, the situation can be resolved better than many initially think – especially if you act in time.

Understanding the situation is the first step to control

Many property owners have not deliberately done wrong. Often it is about the rules never being explained, previous advice being inadequate, or the administration simply falling through the cracks. The important thing is to understand that there is a crucial difference between acting yourself – and the tax authority acting first.

The earlier you find out what applies in your situation, the more options are often available.

At Estity, we work together with legal and tax experts to help property owners understand their obligations in Spain and create structure and security in their ownership.