Rental taxes in Spain: a practical guide for owners (income tax and deductions)

Many owners pay more tax than they should simply by not deducting what the law allows. Rental taxation in Spain is friendlier than it looks if you know it. Here are the essentials, in plain language.

Disclaimer: this is general information, not personalised tax advice. For your specific case, consult your advisor.

How rental income is taxed

Income from residential lettings is declared in personal income tax (IRPF) as income from real-estate capital. The good news: you're not taxed on what you collect, but on the net result — income minus deductible expenses.

Which expenses you can deduct

This is where money is won or lost. Deductible items include, among others:

• Mortgage interest on the property's loan (not the principal).
• IBI (property tax), waste tax and community fees.
• Insurance (home, rent-default, liability).
• Repairs and upkeep (painting, fixing a boiler, plumbing).
• Bills you pay (typical in room-by-room renting).
• Depreciation of the property: 3% per year on the greater of construction cost or the cadastral value of the building.
• Fees for management, administration and professional services.

Note one key distinction: repair/upkeep is deductible in the year; an improvement (which raises value) is not deducted at once — it's depreciated.

The primary-residence reduction

If you let the property as the tenant's primary residence (not tourist or seasonal), the positive net result enjoys a significant reduction in income tax. The percentage depends on the situation (for example, it's higher in stressed-market areas with reduced rents, or for tenants with certain characteristics). This reduction can hugely lower your tax bill, so make sure your contract and your return take advantage of it.

The most expensive mistake: not keeping invoices

You can't deduct what you can't document. Keep all invoices in your name with the property's details: repairs, insurance, community fees, bills, professional fees. A tidy folder in January is money in June.

Other common mistakes

• Forgetting the 3% depreciation: one of the biggest savings, and many people skip it.
• Confusing an improvement with a repair.
• Not deducting bills in room-by-room lettings.
• Declaring as seasonal what is actually a primary residence (and losing the reduction).

What if a company manages it for me?

If your flat is under guaranteed rent or professional management, the management fees are deductible, and you usually receive the information neatly organised for your return. So the model doesn't just save you work — it also simplifies your taxes.

Bottom line

The gap between an owner who knows their deductions and one who doesn't can be several thousand euros a year. Before your next return, do two things: gather every invoice and check you're applying depreciation and, where applicable, the primary-residence reduction. And when in doubt, a good advisor pays for itself.