Tax advice for Gibraltar workers who live in Spain
If you live in La Línea or the Campo de Gibraltar and your salary comes from Gibraltar, you are tax resident in Spain and pay tax here on everything you earn. We prepare that return, calculate the deduction for the tax you have already paid in Gibraltar and reply if Hacienda writes to you. Our office is in La Línea de la Concepción, a few minutes from the border. We see you in person or by video call.
Tax advisers and lawyersCross-border workersOnline or at our office
Tax advisers for cross-border workers in Gibraltar
Around 15,000 people cross the border every day to work in Gibraltar, according to the Spanish Ministry of Foreign Affairs. Almost all of them ask the same tax questions: whether they have to file a return, how much of what they paid in Gibraltar they can deduct and what the Spanish tax authorities know about their salary.
We are tax advisers and lawyers with an office in La Línea, and we advise people who are paid in Gibraltar. We handle the personal income tax (IRPF) of Spanish residents with income from Gibraltar and, if there is a problem, we also defend you before the Spanish Tax Agency. The same team, from the first return to the last appeal.
What we need to get startedYour last tax return, the documents your Gibraltar employer gives you and any letter from Hacienda. With that, we can see where you stand.
What we do for people who live in Spain and are paid in Gibraltar
We work with cross-border workers every day: we help you with your return, answer your questions about your salary, your contract and the months you worked, and give you a clear answer before filing. We work both with employees and with people who have a business in Gibraltar.
Income tax return with income from Gibraltar
We include your salary in your Spanish income tax return as employment income, and file the complete return for your household.
International double taxation relief
We calculate the limit set by law on the taxable base and document the tax paid in Gibraltar so that Hacienda accepts it. That gives the correct tax on your salary.
Tax residence in Spain
We check whether your situation fits the rules of the law and of the 2019 Agreement, and tell you how to prove it and how it affects the way you are taxed.
Late or incorrect returns
We look at the years in which an obligation was not met, for example not filing or filing without the deduction, and propose how to put them right.
Accounts and assets in Gibraltar
We check whether you have to file Form 720 (modelo 720) for bank accounts, securities or property abroad.
Tax notices and reviews from Hacienda
We answer the letter, provide your employer's documents and, where appropriate, appeal against the assessment.
Tax residence: why living in La Línea makes you resident in Spain
The Spanish Income Tax Act considers you resident if you spend more than 183 days a year in Spain or have the main centre of your economic interests here. Unless proved otherwise, you are also presumed resident if your spouse (not legally separated) and dependent minor children live here.
If you sleep in Spain and work in Gibraltar, there is no residence conflict: you are tax resident in Spain and must pay tax in Spain on your worldwide income. Gibraltar taxes employment income where it is earned, even if you do not live there. That is why the system charges two taxes on the same income, and the excess has to be corrected in the Spanish return.
The 2019 tax Agreement between Spain and the United Kingdom on Gibraltar, published in the Spanish Official Gazette (BOE) on 13 March 2021 and in force since 4 March 2021, sets tie-breaker rules only for people who are resident in both territories: nights spent, family, permanent home and assets. It affects you if you also have a home in Gibraltar or have moved there. In that case, it is worth reviewing your situation before Hacienda does.
Spanish income tax return with a Gibraltar salary
The Gibraltar salary, earned outside Spain, is declared in the Spanish income tax return together with the rest of your employment income. Anyone entitled to the international double taxation deduction must file a return in all cases, even if their salary is low.
Three details often go wrong.
The Gibraltar tax year runs from 1 July to 30 June. The Spanish one is the calendar year. The documents from your employer and from the Income Tax Office come by different years and have to be reorganised before calculating anything.
The figures are declared exactly as certified by the employer, with the tax withheld in Gibraltar and the social security contributions shown separately.
The tax return season has fixed dates: the last one, for the 2025 tax year, ran from 8 April to 30 June 2026. It is worth asking your employer for the documents in good time.
Eliminating double taxation: what the 2019 Agreement does and does not provide
This is the most frequent question. Article 2.3 of the Agreement says that the competent authorities will eliminate double taxation where appropriate, in accordance with their domestic law. It does not decide which country taxes each type of income or set its own calculation method: here the principle is that each State applies its own law.
The two States signed a double taxation treaty in 2013, which replaced the 1975 one. That treaty defines the United Kingdom as Great Britain and Northern Ireland and does not mention Gibraltar. In practice, relief for people paid in Gibraltar who live in Spain comes from Spanish domestic law, specifically Article 80 of the Income Tax Act (LIRPF).
Article 80 of the Income Tax Act allows you to deduct the lower of two amounts: the tax actually paid abroad on a similar tax, or the result of applying the Spanish average effective rate to the part of the income taxed abroad. If you paid less in Gibraltar than you would in Spain, you pay the difference here. If you paid more, the excess cannot be recovered this way.
That is why the key is to calculate the limit correctly and to support every euro you declare when paying tax in Spain.
Documents and certificates to declare your Gibraltar income
The list of documents depends on the case; if you receive money from several sources, or there is an open procedure with Hacienda, mention it in your enquiry. Someone at the firm will answer about your specific case, not with a generic guide.
Employer's certificate of earnings and withholdings
Payslips or an annual summary of gross salary, tax withheld (PAYE) and contributions.
Assessment or refund from the Income Tax Office
If Gibraltar has adjusted your tax or refunded part of it, this has to be taken into account in the deduction.
Tax residence certificate
Gibraltar can issue one confirming residence there under its own law. It does not stop Spain from considering you resident here if you meet Spain's own criteria.
Statements for accounts in Gibraltar
Balances at 31 December, in case Form 720 is required.
Hacienda reviews of Gibraltar workers
Hacienda knows who crosses every morning. The 2019 Agreement requires Gibraltar to send Spain, every year, the details of workers registered there with an address in Spain: employer, length of employment and pay conditions. It covers people living in municipalities less than 80 km from Gibraltar, and the first exchange covered periods from 1 January 2014.
If you have not filed, or filed without the deduction, you may receive a tax notice or a review from the tax authorities. As a general rule, Hacienda can review the last four tax years that are not time-barred.
If a letter has arrived, send us the whole thing. We will tell you which procedure it is and what deadline you have.
Gibraltar and tax havens: what changed in June 2026
Until June 2026, Gibraltar had been on the Spanish list of non-cooperative jurisdictions, the former «tax haven» list, since 1991. Order HAC/649/2026, published in the BOE on 27 June 2026, removes it from the list.
According to the Spanish Tax Agency, the change applies to taxes with a tax period, such as income tax, when that period starts on or after 28 June 2026. The first year affected would therefore be 2027.
This raises a question about the exemption in Article 7.p) of the Income Tax Act, for work carried out abroad. Leaving the list is not enough to apply the exemption: the law sets other requirements, such as working for a non-resident entity and the existence of a similar tax, and limits the exemption to 60,100 euros a year. When that year comes, we will look at it with you, without taking it for granted.
EU–UK agreement on Gibraltar, as at 3 November 2026 · It was signed in Brussels on 14 July 2026 and has applied since 15 July, according to the Spanish Ministry of Foreign Affairs. It provides for movement without passport checks between the Campo de Gibraltar and Gibraltar, with Schengen checks at the port and airport, and specific protections for cross-border workers. Ratification by the European Parliament is still pending, with the plenary vote provisionally expected on 14 December 2026. The official sources we have reviewed do not include any change in how your salary is taxed under Spanish income tax. If anything changes, we will update it here.
How we work: from your Gibraltar payslips to your Spanish return
Before we start, we give you the scope of the work in writing, so that you can decide with all the information.
01
Documents
We gather your payslips or certificates, the tax withheld in Gibraltar, your previous return and any letters from Hacienda.
02
Residence and years
We confirm your tax residence and sort your income by calendar year.
03
Calculation
We apply Article 80 of the Income Tax Act and prepare the return with the deduction supported.
04
Filing and follow-up
We file online, give you the receipt and follow up on any later tax notice.
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A typical case in La Línea
A woman lives in La Línea with her partner and children and has worked in Gibraltar for years. Her employer withholds Gibraltar tax and she has always assumed that this covered everything. One day she receives a letter from the Spanish Tax Agency with the details of her job.
We review her working years, calculate what she should have deducted and see what can be regularised. Then we reply to Hacienda with the employer’s documents and organise the following returns so that it does not happen again.
Online too
We see people who work shifts or cannot come to the office by video call. You send us your payslips and certificates on WhatsApp, sign digitally and we file the return online.
Frequently asked questions from Gibraltar workers who live in Spain
Your situation is not listed here? Send us your Gibraltar payslips or certificates on WhatsApp and we will tell you what you need to declare.
Do I have to declare in Spain what I earn in Gibraltar?
Yes. If you are tax resident in Spain, you pay tax here on all your income, wherever it comes from. The tax you have already paid in Gibraltar is deducted under the conditions and limit of Article 80 of the Income Tax Act.
Do I pay tax twice on the same salary?
You should not. Gibraltar taxes the salary where it is earned and Spain on the basis of residence. To avoid double taxation, the Spanish return lets you deduct the tax paid in Gibraltar, within the legal limit. If the Gibraltar tax is lower than the Spanish tax, you pay the difference.
Does Hacienda know what I earn in Gibraltar?
Yes, it can. The 2019 Agreement provides for Gibraltar to inform Spain every year of registered workers with a Spanish address. That is why your return should show the same figures as your employer’s.
What happens if I have not declared my Gibraltar income?
It depends on the year and on whether Hacienda has already written to you. We look at the years affected and explain the options to regularise them before you decide anything.
Do I have to declare my Gibraltar bank account?
If your accounts abroad add up to more than 50,000 euros, you have to file Form 720 (the information return on assets and rights abroad). It is filed from 1 January to 31 March of the following year. We review it with you.
Will my tax return change with the EU–Gibraltar agreement?
According to the official sources we have reviewed, the agreement focuses on borders, customs and cooperation. We have not found any change in how the salary is taxed. We will update this page if that changes.
Can you do my tax return if I do not live in La Línea?
Yes. Our office is in La Línea de la Concepción and we work with people from San Roque, Los Barrios, Algeciras and Castellar de la Frontera. If you prefer not to travel, we do it by video call.
Other services from our firm
Send us your documents and we will review them
Send us your Gibraltar payslips or certificates and your last tax return on WhatsApp, or fill in the form with a short explanation. We will tell you what is missing and how to approach your return.
Office in La Línea de la Concepción. We see you online or in person.
C/ Cervantes 2, entreplanta, despacho 4 · 11300 La Línea de la Concepción
WhatsApp 652 948 572 · +34 956 174 981 · pablo@asesoriaserra.es