It's Tax Return Time: What Expat Tax Residents in Spain Need to Know for 2026
The Spanish income tax campaign for 2025 is now open. If you are a tax resident in Spain, that means one thing: it is time to file your Impuesto sobre la Renta de las Personas Físicas (IRPF) return. Whether you are a British retiree receiving a UK pension, a remote worker, or a property owner with rental income, your worldwide income must be declared to the Spanish tax authority, the Agencia Tributaria (AEAT). Miss the deadlines, and the surcharges start immediately.
Here is everything you need to know.
Am I a Tax Resident in Spain?
If you spent more than 183 days in Spain during 2025, you are a tax resident and must file an IRPF return.
The 183-day rule is the most straightforward trigger, but it is not the only one. The AEAT can also classify you as a tax resident if your main economic interests are based in Spain, or if your non-separated spouse and minor children live here. As a tax resident, you are liable for Spanish income tax on your worldwide income, not just what you earn or receive in Spain.
If you are unsure of your status, do not assume you are in the clear. The AEAT applies a “sporadic absences” doctrine, meaning that time spent outside Spain may still count towards your 183 days unless you can prove formal tax residency elsewhere with a certificate from a foreign tax authority.
The Key Dates for the 2026 Campaign
The 2026 campaign covers income earned during the 2025 calendar year. The filing window is structured as follows:
The 25 June deadline is the one most people miss. If your return shows tax to pay and you want to use direct debit (domiciliación bancaria), your return must be submitted by this date. After 25 June, you must obtain an NRC reference number from your bank and pay manually, which is an avoidable complication in the final days of the campaign.
If you owe tax, Spain allows you to split the payment: 60% is collected at filing, and the remaining 40% is not due until 5 November 2026.
What Must Be Declared?
As a Spanish tax resident, you must declare your worldwide income. This catches many expats off guard, as it is not limited to Spanish income.
The most common income types for expats in our region include:
Employment and self-employment income — whether earned in Spain or abroad, this falls into the general tax base and is subject to progressive rates ranging from approximately 19% to 47%, depending on the autonomous community where you live.
Pensions — UK State Pension and private pensions are generally taxable in Spain under the UK-Spain Double Taxation Agreement, though government service pensions (such as those for former civil servants or military personnel) are typically taxed only in the UK. If you are unsure which category your pension falls into, take advice before filing.
Rental income — income from letting property in the UK or Spain must be declared. Spanish rental income benefits from specific reductions, but only if declared correctly and on time.
Savings income and capital gains — interest, dividends, and gains from the sale of assets (including UK property or investments) are taxed separately at the savings tax rates: 19% up to €6,000, rising to 28% on amounts over €300,000.
Do Not Forget: Modelo 720 and Modelo 721
The deadline for these two forms has already passed: 31 March 2026.
If you hold foreign assets (bank accounts, investments, or property outside Spain) with a value exceeding €50,000 in any single category, you are required to file Modelo 720. Cryptocurrency held on foreign platforms above the same threshold requires a separate Modelo 721. These are informative declarations, not tax payments, but failure to file carries fixed penalties.
If you missed the March deadline, take advice promptly. Voluntary late filing is treated far more favourably than waiting for the AEAT to contact you.
What Happens If You File Late?
The Spanish penalty structure under the 2021 Anti-Fraud Law is progressive but unforgiving.
If you file late voluntarily, before the AEAT sends you a formal notice, the surcharge is 1% of the tax due for each full month of delay. Beyond 12 months, the surcharge rises to a fixed 15%, and late payment interest begins to accrue on top.
If the AEAT initiates contact before you file, formal penalties of between 50% and 150% of the tax due can apply, depending on whether concealment is found to be involved.
The statute of limitations for IRPF is four years. The AEAT has until 30 June 2030 to audit your 2025 return, and its data-matching capabilities are increasingly sophisticated, cross-referencing declared income against asset values, property records, and international data exchanges.
A Word on Automated Drafts
When the Renta WEB portal opens on 8 April, the AEAT will present you with a pre-populated draft (borrador) based on the data it already holds. Do not simply accept this and submit.
For expats, automated drafts routinely omit foreign-source income, overseas pension income, and the specific deductions available to those who have recently become residents. Accepting an incomplete draft is still a legal filing, and the liability for any undeclared income remains yours.
ABAD Abogados Insight
The interaction between Spanish IRPF and UK tax obligations is one of the most common sources of errors we see. The UK-Spain Double Taxation Agreement prevents you from being taxed twice on the same income, but it does not file your Spanish return for you. Income that has already been taxed in the UK still needs to be declared in Spain, with the appropriate credit applied. Getting this wrong, in either direction, creates complications that take time and cost money to resolve.
Act Now, Not in June
The campaign runs until 30 June, but early filing means early refunds if you are owed one, and more time to identify and resolve any issues before the deadline pressure builds. In-person appointment slots at AEAT offices fill quickly once they open on 1 June.
If your tax position involves UK pension income, overseas assets, rental properties in more than one jurisdiction, or a recent change in residency status, professional advice before you file is not a luxury: it is a practical necessity.
Contact ABAD Abogados for a consultation before the June deadline. Our team works with British and European expats across the Murcia, Alicante, Valencia, and Almería regions and has done so for over 25 years.
About Mr Isaac Abad Garrido
Mr Isaac Abad Garrido is the Senior Partner at ABAD & ASOCIADOS Lawyers & Accountants, with over 25 years of experience specialising in Real Estate Law, Tax Law, Corporate Law, Bankruptcy Law, Business Restructuring, and Community Administration.
He has been consistently recognised among The Best Lawyers in Spain™ from 2020 to 2025 for excellence in Tax Law, and in 2022, he was named “Lawyer of the Year” in Tax Law (Murcia, Spain).
A member of the International Bar Association, he is also an Associate Partner of the Spanish Royal Academy of Jurisprudence and Law. Additionally, he serves as a Professor at the University of Murcia, teaching Tax Law, and is a regular contributor to leading international tax law publications, including Newsweek.
Mr Abad Garrido holds degrees in Law, Business Administration, and Accounting, complemented by postgraduate studies at IE Business School. He is a Certified Auditor registered with the Official Registry of Auditors (ROAC).
For legal enquiries, visit abadabogados.com or connect with Mr Abad Garrido on LinkedIn.
