Tax residence in Spain and double taxation conflicts

Article 9 of Ley 35/2006 (the Spanish Personal Income Tax Act) establishes 3 criteria and meeting just 1 is enough. First: staying more than 183 days in Spanish territory during the calendar year. Sporadic absences are added to this calculation, unless you prove your tax residence in another country (usually with a tax residence certificate issued by the authority of that country). If that country is a non-cooperative jurisdiction (former tax havens), the AEAT (the Spanish tax agency) may require you to prove that you stayed there for 183 days.

Second: that the main core or base of your activities or economic interests is located in Spain, directly or indirectly. This is a matter of fact assessed by the management and inspection bodies of the AEAT: where your work or business, your main income, your properties and your assets are located. Third: your residence is presumed, unless proven otherwise, if your legally non-separated spouse and dependent minor children habitually reside in Spain.

Being a resident means paying personal income tax in Spain on your worldwide income, regardless of where the income is generated and who pays it. Furthermore, personal income tax does not allow for a split year: you are either a resident or a non-resident for the entire calendar year, without dividing the tax period due to a change of residence mid-year.

The Supreme Court qualified the 183-day criterion in its judgments of 28 November 2017: a prolonged absence, exceeding 183 days in the year, cannot be classified as sporadic no matter how much intention there is to return. And another strict rule: Spaniards who move their residence to a non-cooperative jurisdiction continue to pay personal income tax for the year of the change and the following 4 years (art. 8.2 LIRPF).

It is more common than it seems: each country applies its own internal rules and both can occur simultaneously (for example, you spend most of the year abroad but your family and assets remain in Spain). This dual residence conflict is not resolved by Spanish law or the law of the other country, but by the double taxation treaty signed between the 2: Spain has a network of around 100 treaties in force, published by the Ministry of Finance.

Article 4.2 of the treaty (following the OECD Model) applies cascading tie-breaker rules in strict order: you only move to the next one if the previous one does not decide. First, where you have a permanent home available to you. Second, with which State you have closer personal and economic relations (centre of vital interests). Third, where you habitually live. Fourth, of which State you are a national. If none of that decides, the authorities of both countries resolve it by mutual agreement.

Since the Supreme Court judgment of 12 June 2023 (appeal 915/2022) the taxpayer's position is stronger: if the other country issues you a tax residence certificate for the purposes of the treaty, the AEAT cannot ignore or question it unilaterally; the conflict is raised and must be resolved by applying the tie-breaker rules of the treaty itself.

If there is no treaty with the other country, no tie-breaker is possible: each State applies its internal rule and double taxation is only corrected with the unilateral deduction of art. 80 LIRPF. And if the conflict persists even with a treaty, a mutual agreement procedure can be initiated between the 2 administrations. Managora studies your specific treaty, because each one has its own wording, and prepares the evidence file for you.

The ideal way to prove tax residence, according to repeated doctrine of the Directorate General for Taxation, is the tax residence certificate issued by the competent authority of the country. In Spain, the AEAT issues it free of charge, through the electronic headquarters (census certificates section, procedure for issuing tax residence certificates), using Cl@ve (the Spanish electronic identification system), a digital certificate or an electronic ID.

There are 2 types: the tax residence certificate in Spain (general use) and the tax residence certificate in Spain for the purposes of a specific treaty, which is the one the other country will ask for to apply the reduced rates or exemptions of the treaty. Both are issued in Spanish and English. If your census data and tax returns match, it is obtained instantly; if not, the AEAT opens a procedure for you to provide supporting documentation. The general validity of the certificate is 1 year. The AEAT also processes the stamping of tax residence forms from other foreign administrations.

The certificate is not always enough: when the AEAT (or the foreign tax authority) disputes your residence, the proof is built with facts. Useful evidence includes, among others, the purchase or rental contract of the home, electricity, water and internet bills, bank and card transactions, boarding passes and passport stamps, the employment contract, the children's schooling or affiliation to the social security system of the country. The empadronamiento (registration on the municipal padrón or census) or having a NIE (foreigner identity number) are mere indications: they do not determine tax residence on their own.

Managora prepares this evidence file with you: a calendar of days of presence, a map of economic and family ties, and a reasoned report that supports your position against a requirement from the AEAT or the administration of the other country.

The treaty distributes the power to tax each type of income (salaries, pensions, dividends, interest, rent, capital gains) between the source country and the residence country, and obliges the residence country to correct double taxation by the exemption method or, as Spain generally does, by the imputation method: you declare your worldwide income and deduct what was paid abroad.

If you are a resident in Spain, the deduction for international double taxation under art. 80 LIRPF is applied in your income tax return (form 100) and is the lesser of 2 amounts: the tax actually paid abroad on that income (capped at the maximum rate allowed by the treaty) and the result of applying your effective average tax rate to the part of the taxable base taxed abroad. The Central Economic Administrative Tribunal confirmed in 2025 that this limit is calculated on the Spanish taxable base of the income, not on the gross foreign amount.

Beware of excess withholding: if the other country withheld more than your treaty allows (for example, 25% on dividends when the treaty limits it to 15%), that excess is not deductible in Spain; you must claim its refund from the tax authority of the other country with the tax residence certificate for the purposes of the treaty.

For workers resident in Spain who physically work abroad, there is also the exemption of art. 7.p LIRPF, up to €60,100 per year of employment income, if the work is provided for a non-resident company and a tax similar to personal income tax is applied in the destination country. Managora reviews which mechanism suits you and prepares the tax return with the correct deduction or exemption.

Remote workers: if you work remotely from Spain for a foreign company, you will normally spend more than 183 days here and be a tax resident in Spain, and the administrative criterion is that the work is understood to be carried out where the worker is physically located, not where the employer is. You will pay tax here on your worldwide income, even if your employer applies withholdings in your country: this double withholding is corrected with the residence certificate, the treaty and, where appropriate, the deduction under art. 80.

Foreign pensioners settling in Spain: in most treaties, following the OECD Model, private pensions are taxed exclusively in the country of residence (Spain), while public civil service pensions are usually taxed only in the country that pays them, unless the pensioner is a national and resident of Spain. Each treaty has its own wording, so you have to read yours: with the Spanish residence certificate you can ask your home country to stop withholding on the private pension.

Year of arrival or departure: as personal income tax does not allow for a split year, in the year of the move you will be a resident or non-resident for the entire financial year according to the criteria of art. 9 (days, economic interests, family). This may force you to file a return in both 2 countries that year and to correct double taxation with the treaty. Before the AEAT, it is advisable to organise the transition: form 030 communicates the change of address (also abroad) and, if you move abroad as an employee with an expected stay of more than 183 days, form 247 allows you to anticipate the change of withholdings from resident to non-resident income tax.

These 3 profiles account for most residence requirements. Managora analyses your specific case and provides you with a reasoned report on your tax residence with which to respond to Hacienda (the Spanish tax authority) or that of the other country. You can see the updated amount in the procedure file.