Selling a house in Formentera: why time matters

Selling a house in Formentera: how much you pay in capital gains taxes and why time matters

When you sell a property in Spain, the capital gains tax does not depend solely on how much you earn compared to the purchase price. They also depend on how long you have held the property, where you are tax resident, and how the transaction is structured. Those who sell after two years find themselves in a very different tax situation than those who sell after ten. Knowing these differences before putting the property on the market is not a detail: it can be worth tens of thousands of euros.
When selling a property in Spain, two distinct taxes are paid that are often confused with each other because they are both called “plusvalía.” They are, however, two separate taxes, with different calculation bases, managed by different entities and with completely different logics.

The two types of capital gains: national and municipal

The national capital gains tax (IRNR for non-residents)

It is the tax that applies to the actual difference between the selling price and the purchase price. For those who are not tax residents in Spain — the majority of foreign buyers in Formentera — it is called IRNR (Non-Resident Income Tax). The rate for residents of the European Union is 19%.
The taxable base is the net capital gain: selling price minus purchase price, with the possibility of deducting certain expenses. Included in the deduction are the initial purchase price, notary and registration fees, taxes paid at the time of purchase, works documented by invoices, and expenses related to the sale such as agency commissions and notary costs.
This tax does not change with the number of years of ownership. The 19% rate applies whether you sell after two years or after twenty. What changes is the taxable base, which depends on the market price at the time of sale, not on the duration of ownership.

The Municipal Capital Gains Tax (IIVTNU)

The Municipal Capital Gains is a local tax that burdens the increase in value of urban land from the purchase to the sale of the property. The tax does not depend on the market price of the property, but on the cadastral value of the land and the time elapsed between purchase and sale.
This is the point where the duration of possession directly affects it. The calculation coefficients take into account possession periods ranging from less than a year to 20 years or more, and they increase with the passage of time. For example, for a period of less than one year the coefficient is 0.14while for 20 years or more it rises to 0.45.

How it is calculated concretely

Objective method

The taxable base is obtained by multiplying the cadastral value of the land by the coefficient corresponding to the years of ownership, set each year by the State as the maximum limit applicable by the Municipalities. On this basis, the municipal tax rate is then applied, which each Municipality independently establishes within the legal limits and which generally falls between 20% and 30%.

Real method

Since 2021, the taxpayer can choose between the objective method and the real method, based on the actual difference between the purchase value and the selling value. You can choose the one that is more favorable. A practical rule: for those who purchased at high prices in recent years and are selling in a stable market, the real method often produces a lower result. For those who bought many years ago at prices much lower than the current ones, the objective method may be more advantageous. In any case, it is always advisable to simulate both before proceeding.

The 3% withholding tax at source: how it works

For non-residents, at the time of signing in front of the notary, the buyer is required to withhold 3% of the sale price and pay it to the Spanish Tax Agency as an advance on the tax. Subsequently, the seller will need to regularize the situation, paying the balance if the tax due is higher, or requesting a refund in case of excess.
The 3% withholding is not an additional tax: it is a payment on account. The relevant point for the seller is that if the tax actually due on the capital gain is less than the 3% withheld — which can happen when the net capital gain is low — they are entitled to a refund of the difference. This refund must be actively requested within the stipulated deadlines by submitting Form 210 with the necessary documentation.

Sell after 2 years vs sell after 10: concrete simulation

Let’s consider a typical case for Formentera: purchase of a villa in 2015 for 700,000 euros (including purchase expenses) with a cadastral land value of 80,000 euros.

Sale in 2017 — 2 years of ownership — for 800,000 euros

National IRNR tax at 19%: the net capital gain is 100,000 euros. The tax is 19,000 euros.
Municipal Capital Gains Tax: with a low coefficient corresponding to 2 years of ownership, the taxable base on the cadastral value of the land is contained. With a municipal rate of 25%, the tax can amount to around 3,000–4,000 euros.
Indicative total: approximately 22,000–23,000 euros in capital gains tax.

Sale in 2025 — 10 years of ownership — for 1,200,000 euros

National IRNR tax at 19%: the net capital gain is 500,000 euros. The tax is 95,000 euros.
Municipal Capital Gains Tax: the coefficient for 10 years of ownership is significantly higher. With the same cadastral land value of 80,000 euros and a municipal rate of 25%, the tax amounts to around 4,000–5,000 euros using the objective method.
Indicative total: approximately 99,000–100,000 euros in capital gains taxes.
The difference is not only in the absolute amount — which reflects the fact that in the second case much more was earned — but in the structure. The national tax scales proportionally to the realized capital gain. The Municipal Plusvalía increases with the years of ownership but at a much slower rate and, for high-value properties like those in Formentera, it represents a smaller portion of the overall tax burden.

When the Municipal Capital Gains Tax is not paid

If the property is sold for a price equal to or lower than the purchase pricethere is no increase in value and the Municipal Capital Gains Tax is not paid. This regulation, introduced after a ruling by the Constitutional Court in 2021, has eliminated the distortion that previously required payment even in the case of a sale at a loss. Before any transaction, it is always worth checking if this condition applies.

Deductible expenses: an often underestimated element

Before calculating the net capital gain on which the IRNR applies, it is essential to correctly sum all deductible expenses related to the purchase and sale. Included in the deduction are: the ITP or VAT paid at purchase, notary and registration fees at purchase, the real estate agency commission at sale, notary fees at sale, and expenses for renovation or improvement works documented by regular invoices.
A renovation costing 100,000 euros with proper invoices reduces the taxable base by 100,000 euros, saving 19,000 euros in IRNR. Keeping all the documentation of expenses from purchase to sale is a form of tax planning at zero cost.

The deadlines for the declaration

For capital gains from the sale of real estate, the deadline for submitting Form 210 is 3 months after one month has passed from the date of the transaction. In practice: there is a one-month grace period after the sale, then 3 months to submit the declaration and regularize the situation.
The Municipal Capital Gains must be paid to the municipality where the property is located within 30 working days from the date of the deed. These are short deadlines that require proactive management, especially for those who do not reside in Spain.

What to keep in mind before selling

Anyone considering selling a property in Formentera should conduct this preliminary analysis with their tax advisor: simulate the net capital gain by deducting all documentable expenses, calculate the IRNR at 19%, calculate the Municipal Capital Gain using both methods and choose the most advantageous one, check if the 3% withholding at signing will be higher or lower than the actual tax, and evaluate the tax implications in the country of residence in relation to the double taxation agreement.
The timing of the sale — in terms of fiscal year and market context — can have a significant impact on the overall tax burden. Planning done six months in advance is almost always worth much more than the savings sought at the last minute.
If you are considering selling a property in Formentera, contact us: we work with tax consultants specialized in international real estate transactions and can help you structure the sale correctly and tax-efficiently.

Article updated as of April 2026. The reported fiscal data is indicative. The rates and coefficients are subject to annual updates. Always consult a qualified tax advisor before proceeding with any operation.