Double taxation treaties for German rental income — UK, US, France explained

1. Germany exercises the primary right to tax your rent

If you own real estate in Germany, Germany taxes the rental income. Your residency status does not change this fact. The OECD Model Tax Convention Article 6 establishes the Belegenheitsprinzip (location principle). This rule assigns the primary taxing right to the country where the physical property sits. Germany enforces this right through §49 Abs. 1 Nr. 6 EStG (Einkommensteuergesetz). This article defines your non-resident tax liability (beschränkte Steuerpflicht). You must file a German Einkommensteuererklärung (income tax return) every year. You declare your Mieteinnahmen (rental income) and deduct your Werbungskosten (deductible expenses). You pay the resulting German tax first. After you settle your German tax bill, you report the same rental income to your home country. Your home country then applies a specific treaty mechanism to ensure you do not pay tax twice on the same euro. You never skip the German tax return. The home-country treaty relief relies entirely on the final numbers calculated by the German tax office.

2. How tax treaties prevent double taxation

Double taxation treaties use two primary methods to protect cross-border investors. The first is the credit method. Under the credit method, your home country calculates tax on your global income, including the German rent. It then subtracts the exact tax amount you paid to Germany from your domestic tax bill. If the German tax is lower than your home-country tax, you pay the difference at home. If the German tax is higher, you owe your home country nothing on that specific income. The US and the UK use the credit method. The second approach is the exemption method. Under the exemption method, your home country ignores the German rental income for direct taxation. The home tax authority only uses the German profit to determine your tax bracket for your local income. This is known as Progressionsvorbehalt (exemption with progression). France applies a variation of this method. Regardless of the method your home country uses, the workflow remains identical. You calculate the German profit, pay the German tax, obtain the official receipt, and apply the treaty rule at home.

3. The UK system and the HMRC Foreign Tax Credit

UK residents report their global income to His Majesty's Revenue and Customs (HMRC). The UK-Germany Double Taxation Convention allows you to claim a Foreign Tax Credit (FTC) for the tax paid to Germany. You report the German rental profit on the foreign property pages of your Self Assessment tax return. You calculate your UK tax liability on that specific profit. You then deduct the German tax paid. You cannot claim a refund from HMRC if the German tax exceeds the UK tax. You simply reduce your UK tax on the German income to zero. A major complication for UK investors is the differing tax years. The German tax year runs from 1 January to 31 December. The UK tax year runs from 6 April to 5 April. You must apportion your German rental income and expenses to match the UK tax year when filing your Self Assessment. You calculate the net profit under UK rules, which restrict mortgage interest deductions to a 20 % basic rate credit, unlike Germany's full deduction.

• German rental profit | 10 000 € | £8,500 equivalent
• German tax paid (20 % effective) | 2 000 € | £1,700 equivalent
• UK tax on £8,500 at higher rate (40 %) | £3,400 | Liability before credit
• HMRC Foreign Tax Credit applied | - £1,700 | Offset for German tax
• Net UK tax payable | £1,700 | Final amount owed to HMRC

4. The US system and IRS Form 1116

US citizens and residents face global taxation regardless of where they live. You report your gross German rental income and expenses on Schedule E of your Form 1040. To avoid double taxation, you claim a Foreign Tax Credit using IRS Form 1116. Rental income typically falls into the passive category income basket. The IRS calculates the US tax generated by your German rental profit. You then apply the German tax paid as a dollar-for-dollar credit against this specific US tax liability. If your German tax exceeds your US tax on that income, you generate a foreign tax credit carryover. You can apply this carryover to future tax years. US investors face a strict depreciation mismatch. Germany uses a standard linear depreciation rate. The IRS requires you to use the Alternative Depreciation System (ADS) for foreign residential property, mandating a 30-year or 40-year straight-line schedule. You must maintain a separate depreciation ledger for your US tax return.

• German rental profit under IRS rules | 10 000 € | $11,000 equivalent
• German tax paid (20 % effective) | 2 000 € | $2,200 equivalent
• US tax on $11,000 profit (24 % bracket) | $2,640 | Liability before credit
• IRS Form 1116 Foreign Tax Credit | - $2,200 | Dollar-for-dollar offset
• Net US tax payable | $440 | Final amount owed to IRS

5. The French system and the taux effectif

French tax residents declare their German rental income on Form 2047 and Form 2044. Under Article 6 of the 2015 France-Germany tax convention, Germany retains the exclusive right to tax this specific income. France does not tax the German rent directly. You do not pay French income tax or social charges (CSG/CRDS) on the German property profit. Instead, France applies the taux effectif (effective rate) method. The French tax authority adds your net German rental profit to your domestic French income. This combined global income determines your marginal tax bracket. France then taxes your French-source income at this higher bracket. The German income pushes your French income into a higher tax band, but the German income itself remains exempt. You must calculate the net German profit according to French tax rules when reporting it on Form 2044. This means adjusting for differences in deductible expenses between the two countries.

• German rental profit | 10 000 € | Exempt from direct French tax
• French domestic income | 50 000 € | Base income
• Total global income | 60 000 € | Sets the bracket for the taux effectif
• Calculated effective tax rate | 15.5 % | Applied only to the French base
• French tax payable | 7 750 € | 50 000 € × 15.5 %

6. Calculating your German tax base first

Before applying any treaty rule, you calculate your German taxable profit. You declare your Kaltmiete (cold rent) on Zeile 13 for the main unit, and Nebenkosten (utility prepayments received) on Zeile 20. You deduct your Werbungskosten (expenses) starting at Zeile 33. The largest deduction is usually AfA (Absetzung für Abnutzung), the building depreciation. Under §7 Abs. 4 EStG, the standard linear AfA rate is 2.0 % for buildings completed from 1925 onward. Older buildings get 2.5 %. Residential new-builds completed from 2023 onward qualify for 3.0 %. You only depreciate the Gebäudeanteil (building value), never the Grund-und-Boden (land value). You also deduct Schuldzinsen (mortgage interest) entirely on Zeile 46. The sum of these deductions on Zeile 83 is subtracted from your total income to find your profit. Non-residents face a specific disadvantage. The Grundfreibetrag (tax-free allowance, 11 784 € in 2025) does not apply to non-residents. You pay tax from the very first euro of profit. The progressive tax rate starts at 14 % and scales up based on your total German income.

7. Handling mismatched deductions across borders

Your German taxable profit rarely matches your home-country taxable profit. Each country enforces distinct deduction rules. A zero-euro tax bill in Germany does not guarantee a zero-euro tax bill at home. The 15 % rule under §6 Abs. 1 Nr. 1a EStG causes frequent cross-border mismatches. If you renovate a German property within the first three years of ownership, and the costs exceed 15 % of the building's purchase price, Germany classifies this as Anschaffungsnaher Herstellungsaufwand. You cannot deduct these costs immediately. You must add them to the building value and depreciate them at 2.0 % over 50 years. Your home country might classify those exact same repairs as immediately deductible maintenance. Conversely, Germany allows you to fully deduct your mortgage interest against rental income. The UK restricts this deduction entirely for individual landlords, offering a basic rate tax reduction instead. You must maintain two separate accounting ledgers. One ledger follows German EStG rules for your Anlage V. The second ledger follows your home-country rules to determine the correct base for your foreign tax credit.

8. Translating euros into your home currency

You pay your German taxes and collect your rent in euros. You file your home-country taxes in pounds or dollars. You must convert your German figures using official exchange rates. Tax authorities do not allow you to pick random daily rates that favor your outcome. The IRS generally accepts the yearly average exchange rate for translating income and ordinary expenses. HMRC provides official average exchange rates for the UK tax year ending 5 April. However, when claiming a foreign tax credit, the rules tighten. You must usually convert the actual tax paid to Germany using the exchange rate on the exact date you paid it. If the Finanzamt deducts the tax directly from your German bank account, you document the exchange rate for that specific day. Keep your Zinsbescheinigung (annual interest statement) and bank statements on file. If the tax authorities audit your foreign tax credit claim, they will demand proof of the exact conversion rates applied.

9. Securing the required documentation from the Finanzamt

To claim a foreign tax credit, you need definitive proof that you paid the German tax. The only document tax authorities accept is the official Steuerbescheid (tax assessment notice) issued by the German Finanzamt. You also need bank records proving the funds left your account. The standard German filing deadline is 31 July of the year following the tax year. The Finanzamt typically takes two to four months to process the return and issue the Steuerbescheid. This timeline creates a severe mismatch for UK and US taxpayers. The US filing deadline is 15 April, with an automatic extension to 15 June for expats. You will almost certainly need to file Form 4868 for a further extension to 15 October while you wait for the German paperwork. Never claim a foreign tax credit based on an estimated German tax bill. If the Finanzamt alters your deductions and changes your final tax liability, your home-country tax return will be incorrect, triggering penalties.

10. Filing timeline and practical steps

You submit your German tax return electronically using an ELSTER-Zertifikat. Paper forms are generally no longer accepted for standard rental income. Many non-resident files are processed centrally by Finanzamt Neubrandenburg. You must map your income and expenses to the exact Zeilen (lines) on the Anlage V form. Gather your Hausgeldabrechnung (property management statement), utility bills, and mortgage interest statements early in the year. Translate the totals into the German categories required by ELSTER. If you miss the 31 July deadline without an extension, the Finanzamt levies late filing penalties (Verspätungszuschlag) for every month you delay. You can prepare your German rental tax report from abroad in 10 minutes for €79 using Anlage V Easy, which maps your inputs directly to the official ELSTER fields. Once you transmit the data, you wait for the Steuerbescheid. Pay the assessed amount immediately upon receipt to lock in your foreign tax credit documentation for your home country.