Having rental income from the UK while resident in Spain requires coordinating two different tax systems. The UK may tax the income because the property is located there, and Spain must also take it into account if the owner is a Spanish tax resident, as they are taxed on their worldwide income. The key is not simply to declare it twice, but to calculate the income correctly in each country and apply the double taxation mechanism.
At Barcelona Tributario, we are specialists in international taxation and advise residents in Barcelona and Catalonia with property, investments and assets abroad. We review UK and Spanish taxation together so that the owner complies in both countries, benefits from the expenses and reliefs they are genuinely entitled to, and does not pay more than necessary due to poor coordination.
Quick answer: if you have rental income from the UK while resident in Spain, you will normally need to declare the property income in the UK and also include it in your Spanish personal income tax return. The treaty in force between Spain and the UK allows the UK to tax income from the property, while Spain relieves double taxation by deducting the tax actually paid, within the legal limits.
Tax residence is the first factor we review
Living in Spain for more than 183 days is not the only criterion
Spain's Personal Income Tax Act considers an individual to be a Spanish tax resident, among other circumstances, if they spend more than 183 days in the calendar year in Spain or if the main centre or base of their activities or economic interests is in Spain. There is also a presumption of residence where the spouse, unless legally separated, and dependent minor children habitually reside in Spain, unless proven otherwise.
Declaring UK rental income while resident in Spain involves more nuances than it may seem. Avoid costly mistakes and ensure you comply correctly with both tax authorities: our tax lawyers will review your case with no obligation.
For this reason, at Barcelona Tributario we do not simply count days. Where there is personal life, economic activity, assets or significant stays in both countries, we analyse the full picture before determining where the client should be taxed.
If both countries consider you resident, the treaty comes into play
Spain and the UK may both consider the same individual resident under their domestic rules. In that case, the treaty's tie-breaker rules must be applied: permanent home, centre of vital interests, habitual abode, nationality and, ultimately, agreement between the competent authorities.
Resolving this issue correctly determines all subsequent taxation of rental income from the UK while resident in Spain.
How UK rental income is taxed
The Non-Resident Landlords Scheme may result in tax deductions
If the owner's usual place of residence is outside the UK, they may fall within the Non-Resident Landlords Scheme (NRLS). Where a UK letting agent collects the rent, the agent will normally operate the scheme. If there is no agent, a tenant paying more than £100 per week may have to do so.
Tax under the NRLS is calculated at the basic rate on the taxable income after deductible expenses paid by the agent or tenant and allowable under the scheme rules. It is therefore not always correct to describe it as an automatic 20% deduction from all gross rent.
It is possible to apply to receive rent without deductions
The owner may apply to HMRC for authorisation to receive rent without deduction through the relevant procedure for non-residents. HMRC authorisation to receive the full rent does not make the rental income exempt: it must still be declared later through Self Assessment where applicable.
At Barcelona Tributario, we coordinate this matter with the UK adviser to establish how much tax has actually been paid in the UK, because this figure will subsequently be relevant for the Spanish tax deduction.
UK and Spanish expenses are not calculated in the same way
The UK allows certain property business expenses to be deducted, but for individuals, financing costs on a rental property are subject to a specific regime: since 2020, residential finance costs are no longer deducted directly from profit as they previously were, but may give rise to basic-rate tax relief of 20%, subject to the applicable limits.
This matters because the profit calculated by HMRC should not simply be copied into the Spanish personal income tax return. Each country determines taxable income under its own rules.
How income from a UK property is declared in Spain
The income is treated as income from real estate capital
If the letting does not constitute an economic activity for Spanish personal income tax purposes, the income is included as income from real estate capital. Gross income must be declared, and only expenses considered deductible under Spanish law and properly substantiated may be deducted.
Relevant expenses may include interest and other financing costs within the applicable limits, repairs, insurance, management costs, certain taxes and tax depreciation of the property.
Depreciation of a foreign property requires documentation
Depreciation is one of the issues that causes the most difficulties where the property is in the UK and there is no Spanish cadastral value that allows land and buildings to be easily separated. Recent case law and the criteria adopted by the Spanish Tax Agency allow actual depreciation to be calculated within certain limits, but it remains necessary to substantiate a reasonable basis and exclude the value of the land.
At Barcelona Tributario, we review the deed or acquisition contract, valuations, UK reports and any available information to build a defensible tax position. For high-value assets, a difference in this basis can significantly alter the net income declared each year.
The Spanish marginal rate depends on your other income
Net rental income forms part of the general taxable base for Spanish personal income tax purposes. This means there is no single rate for rental income from the UK while resident in Spain: the final tax liability depends on the taxpayer's other income and tax circumstances.
This is precisely one of the reasons why we carry out an overall calculation rather than analysing the property in isolation.
The residential rental relief may also be relevant outside Spain
It should not be ruled out simply because the property is in the UK
The initial draft stated that the relief under Article 23.2 of the Spanish Personal Income Tax Act could not generally apply to a property located abroad. That conclusion is too categorical. Case law has recognised the application of the relief to income from a property in the UK where the requirements for a residential letting were met.
Therefore, the fact that the property is located outside Spain does not automatically rule out the relief. The contract date, the property's actual residential use and the legislation in force for that tax year must be considered.
Older and newer contracts do not have the same percentage
For contracts entered into before 26 May 2023, the 60% relief generally continues to apply under the transitional regime, provided the requirements are met. For later contracts, Article 23.2 establishes a general 50% relief, which may increase in certain circumstances.
The enhanced reliefs of 60%, 70% or 90% depend on specific requirements, and some are linked to concepts within the Spanish housing system, such as stressed residential rental market areas. For a UK property, each condition should be reviewed rather than applying percentages automatically.
How we avoid double taxation between Spain and the UK
The treaty currently in force was signed in 2013
The treaty currently applicable between Spain and the UK was signed in London in 2013 and entered into force in 2014. It replaced the former 1975 treaty, which ceased to have effect.
Every year that passes without proper tax planning can result in penalties or higher tax than necessary. Speak to an international tax specialist today and find out how to optimise your tax burden legally and securely.
Article 6 allows the UK to tax income derived from property located there, even if the owner is a Spanish tax resident.
Spain allows a deduction for tax paid in the UK
Spain includes the income in the resident's personal income tax return and allows double taxation to be relieved. The deduction is not necessarily equal to all the tax paid in the UK: Article 80 of the Spanish Personal Income Tax Act limits the credit to the lower of the foreign tax actually paid and the amount resulting from applying the average effective Spanish rate to the income taxed abroad.
This is why we distinguish between NRLS deductions and final UK tax. If a deduction is ultimately refunded by HMRC, it should not be treated as though the entire amount had been foreign tax definitively borne.
The two tax calendars must be coordinated
The UK tax year runs from 6 April to 5 April, whereas Spanish personal income tax follows the calendar year. This difference requires income, expenses and tax paid to be reconciled so that the Spanish return correctly reflects the relevant period.
At Barcelona Tributario, we carry out this documentary reconciliation for clients with rental income from the UK while resident in Spain, preventing different tax calendars from resulting in an incorrectly calculated deduction.
Form 720 and other obligations relating to foreign property
The threshold and valuation are analysed by property category
Form 720 contains three separate categories: accounts, securities and rights, and real estate and rights over real estate. The initial reporting obligation is assessed against the €50,000 threshold within each category, rather than by indiscriminately adding together all foreign assets. A UK property may give rise to a reporting obligation even if it generates no income or the rental tax has been correctly declared.
For property located abroad, the Spanish Tax Agency uses the acquisition value for Form 720 purposes, including expenses and taxes inherent in the purchase. If the price was stated in pounds, the reporting value is adjusted using the applicable exchange rate under the form's rules. As a general rule, it is not correct to use “the higher of the acquisition value, cadastral value and value assessed by the authorities”, because this is not the valuation rule for property under Form 720.
Selling the property may require you to report again
After an initial return has been filed, there is no automatic obligation to resubmit the form every year. It is necessary to review, among other circumstances, whether there has been an increase above the relevant regulatory threshold or whether ownership has ended through a sale or other transfer.
If you sell the property, the gain must also be coordinated
The future sale of a UK property may give rise to Capital Gains Tax in the UK. From 6 April 2026, the general rates for individuals are 18% and 24%, depending on the taxpayer's circumstances and the gain.
If the owner remains a Spanish tax resident when they sell, the capital gain must also be analysed in Spain and may be included in the savings taxable base. In 2026, the top rate on this scale reaches 30% for the portion exceeding €300,000. Once again, the treaty and double taxation deduction must be coordinated so that the eligible UK tax is deducted within the Spanish limits.
Why entrust this tax matter to Barcelona Tributario
We are specialists in international assets with a connection to Barcelona
At Barcelona Tributario, we work with residents in Barcelona and Catalonia who hold property, companies, investments or assets outside Spain. Our work is not limited to completing a tax return: we analyse how the two jurisdictions fit together and which decisions can reduce risk and improve the tax outcome within the law.
We review the entire arrangement, not just one tax return
For rental income from the UK while resident in Spain, we review tax residence, NRLS, Self Assessment, UK expenses, Spanish taxable income, residential rental relief, depreciation, Form 720 and the double taxation deduction.
The aim is for the client to have one coherent tax strategy, even where two tax authorities are involved. This coordination is where we add the most value and prevent the most errors.
Frequently asked questions about UK rental income while resident in Spain
Do I have to declare rental income in Spain if I already pay tax in the UK?
Yes, if you are a Spanish tax resident, you must include the relevant worldwide income in your personal income tax return. UK tax actually paid may entitle you to a double taxation deduction within the legal limits.
Do you own a property in the UK and live in Barcelona? At Barcelona Tributario, we coordinate your Spanish and UK tax affairs so that you do not overpay or face unnecessary risks. Request an initial personalised assessment now.
Does the UK agent always deduct 20% from all rental income?
Not exactly. The NRLS applies the basic rate to the taxable amount after certain deductible expenses paid by the person operating the scheme. In addition, HMRC may authorise the owner to receive rent without deductions and settle their tax later through Self Assessment.
Can I apply residential rental relief in Spain?
The property's location in the UK does not automatically exclude the relief under Article 23.2. The contract date, residential use and requirements in force must be reviewed. Contracts entered into before and after 26 May 2023 are subject to different regimes.
Do I have to submit Form 720 for a property in the UK?
A reporting obligation may arise if the threshold for the property category is exceeded and no exemption applies. The reference value for this form is generally the acquisition value under its specific rules.
Can I deduct mortgage interest in Spain?
Interest and other financing costs may be deductible when calculating income from real estate capital, within the limits established by the Spanish Personal Income Tax Act. Spanish treatment should not be confused with the UK tax relief system for financing costs.
What happens if I sell the UK property?
The sale may give rise to tax in the UK and also in Spain if you remain a Spanish tax resident. The gain must be calculated in each jurisdiction, and the treaty and double taxation deduction must be applied correctly.
Can you review tax returns from previous years?
Yes. At Barcelona Tributario, we can review personal income tax returns, Form 720 and UK documentation from previous tax years to identify errors, unused deductions or potential liabilities that should be regularised before an inspection.