Last Updated on September 8, 2026
More and more property owners are looking beyond their home market for better rental yields, capital growth, and portfolio diversification – a French apartment, a Spanish coastal rental, a US buy-to-let.
It’s a smart strategy. But every country you invest in comes with its own tax number, its own filing calendar, and its own rules on what you can and can’t deduct.
The property owners who genuinely maximize their cross-border returns aren’t necessarily the ones with the biggest portfolios – they’re the ones who stay on top of compliance in every jurisdiction they invest in.
Here’s how they do it, and what that looks like country by country.
Claim All Allowable Deductions
Wherever you own property, the tax you pay is rarely calculated on your gross rent – most countries let you deduct legitimate costs first. Depending on the jurisdiction, this typically includes:
- Mortgage interest
- Repairs and maintenance
- Property management and agent fees
- Insurance
- Local property-related taxes
The catch is that every country defines “allowable” differently, and some restrict deductions to residents or to particular regimes.
Getting this wrong in either direction – missing deductions you’re entitled to, or claiming ones you’re not – is one of the most common ways non-resident landlords either overpay or run into problems with a local tax authority.
Choose the Optimal Tax Regime
Many countries offer more than one way to calculate your taxable rental profit – a simplified flat-deduction method versus a detailed actual-expenses method.
Which one is “optimal” isn’t fixed; it depends on how much you’re spending on the property relative to your rental income each year. Reviewing this annually, rather than defaulting to whichever option you picked first, is one of the simplest ways to keep more of your rental income.
Avoid Penalties With Proper Filing
Missed deadlines and incomplete returns are one of the most avoidable costs of owning property abroad.
Filing windows, forms, and penalty regimes differ sharply from one country to the next, and non-residents are rarely given the same automatic reminders or pre-filled returns that local taxpayers get.
Building a simple annual calendar of your filing obligations, per country, is often the difference between smooth compliance and unexpected fines.
Use Double Taxation Agreements (DTAs)
A common fear for cross-border property owners is being taxed twice on the same rental income – once in the country where the property sits, and again at home.
In practice, this is exactly what Double Taxation Agreements exist to prevent. Almost all major property investment destinations – France, Spain, Germany, the UK, the US, Ireland, Poland, and Hungary among them – have bilateral DTAs with each other.
The principle: the “source” country (where the property is located) generally has the primary right to tax the rental income. Your “residence” country (where you live) then provides a foreign tax credit for the tax you’ve already paid abroad, rather than taxing the same income again in full.
Example: a UK resident earning €10,000 in rental income from a Spanish property, who pays €2,400 in Spanish tax, must still report that income to HMRC – but can typically deduct the €2,400 already paid in Spain from their UK tax bill.
DTAs don’t remove your obligation to declare the income in both countries, but they do stop you from being penalized twice for investing abroad, and they help clarify which country taxes which element of your return.
Centralize Reporting and Compliance
Once you own property in more than one country, the biggest risk usually isn’t any single tax rule – it’s losing track of which deadline, form, or registration applies where.
Owners who manage this well tend to keep one consolidated view of every property’s tax ID, filing deadline, and regime, rather than treating each country as a separate, disconnected task. This is exactly the kind of oversight a specialist cross-border property tax service is built to provide.
Rental Income Tax Filing by Country
France
- Declare rental income via an annual tax return, filed with the Direction des Impôts des Non-Résidents for non-residents.
- Choose your regime:
- Micro-foncier (unfurnished lets) – a flat 30% deduction, available if gross rents stay under €15,000 a year.
- Micro-BIC (furnished lets) – a flat deduction of 30% or 50% depending on the type of let, subject to income thresholds.
- Régime réel – deduct your actual, documented expenses instead, required once you exceed the relevant threshold or if you opt in.
- Pay income tax plus social charges – non-residents outside the EU/EEA typically face a higher social charges rate than EU/EEA owners.
Spain
- Obtain your NIE (Número de Identificación de Extranjero) – Spain’s foreigner identification and tax number, required before you can own or rent out property.
- File Modelo 210, the non-resident tax return used to declare both rental income and any period the property sits empty.
- Declare your rental income: EU/EEA residents are taxed at 19% on net income after deductible expenses; non-EU/EEA owners are taxed at 24% on gross income, with no deductions allowed.
- Non-EU owners should pay particular attention here, since the lack of deductible expenses makes accurate declaration of gross income even more important.
Germany
- Register with your local tax office (Finanzamt) covering the property’s location.
- File an annual tax return declaring rental income under the category “Vermietung und Verpachtung” (letting and leasing).
- Deduct allowable expenses, including maintenance costs and depreciation on the building.
- Non-residents remain taxed on German-sourced rental income even without German tax residency.
United States
- Obtain an ITIN (Individual Taxpayer Identification Number) – mandatory for any non-resident who needs to file a US tax return but isn’t eligible for a Social Security Number.
- File a tax return with the IRS.
- Check for state return filing obligations – Some states impose their own withholding requirements, separate from federal.
- Report rental income on Schedule E, the form used specifically for rental real estate income and expenses.
- Deduct expenses and depreciation, both of which can meaningfully reduce your taxable rental profit.
- Check your withholding compliance obligations – non-resident owners can be subject to specific US withholding rules depending on how the property is managed.
Ireland
- Appoint a collection agent, or your tenant must withhold tax for you. Under Ireland’s Non-Resident Landlord Withholding Tax (NLWT) system, if you don’t have an Irish collection agent, your tenant is legally required to withhold 20% of the gross rent and remit it to Revenue on your behalf.
- Register for self-assessment and file Form 11 annually.
- Report your gross rental income, deducting allowable expenses such as mortgage interest, repairs, and management fees.
- Settle your final liability – the 20% withheld isn’t your final tax bill, just a payment on account; you may owe more (or be due a refund) once your Form 11 is processed, and USC and PRSI can also apply.
Poland
- Obtain a Polish Tax ID Number (NIP) – required for non-resident taxpayers before they can register and pay tax on Polish rental income.
- Choose your taxation method:
- Ryczałt (lump-sum) – a flat 8.5% on rental revenue up to PLN 100,000 a year, and 12.5% on the amount above that, with no expense deductions allowed.
- Since 2023, this lump-sum method is the only option available for private rental income in Poland – the old progressive-rate alternative no longer applies to najem prywatny.
- File your annual return (PIT-28) and settle payments, which are typically due monthly (or quarterly, if eligible) by the 20th of the following period.
Hungary
- Obtain a Hungarian Tax Number (adóazonosító jel) – required before you can legally own property and earn rental income in Hungary as a non-resident.
- Register with the Hungarian tax authority (NAV), typically via the T34 form.
- Declare your rental income annually, with the return due by 20 May of the following year.
- Apply the flat tax rate or itemize costs: Hungary applies a flat 15% rate, calculated either on 90% of gross rental income (a built-in 10% allowance) or on your actual profit after documented expenses.
- Pay any applicable social contributions, where relevant to your circumstances.
None of these systems is difficult on its own – the challenge is that they’re all different, and they all move independently: different tax numbers, different deadlines, different deduction rules, different forms.
The property owners who consistently get the most out of investing abroad are the ones who treat compliance as part of the investment strategy, not an afterthought once the rent starts coming in.
Let PTI Simplify Cross-Border Compliance
At PTI Returns, we help property owners manage exactly this kind of complexity – registering for the right tax number in each country, choosing the most tax-efficient regime, filing on time, and applying double taxation agreements correctly so you’re never paying more than you need to.
Whether you own one rental property abroad or a portfolio spread across several countries, we centralize your compliance so you can focus on the returns.
Let PTI Returns take the stress out of cross-border property tax.