Double Taxation Treaties: What Real Estate Investors Need to Know

A double taxation treaty (DTT), also known as a tax convention or double tax agreement, is a bilateral agreement between two countries that determines how income earned by a resident of one country from sources in the other country is taxed. For real estate investors, the most relevant provisions concern income from immovable property (rental income) and capital gains on the disposal of property. Without a DTT, the same income can be taxed in full by both the country where the property is located and the investor's country of residence — a scenario that can make cross-border investment economically unviable. ## How Double Taxation Treaties Work Most DTTs follow the OECD Model Tax Convention, which allocates the primary right to tax income from immovable property to the country where the property is located (the source country). The investor's country of residence (the residence country) then either exempts the income from domestic tax (the exemption method) or taxes it but grants a credit for the tax already paid in the source country (the credit method). The credit method is more common and means the investor pays the higher of the two countries' tax rates, rather than both in full. ## Germany–UAE: No Treaty Germany and the UAE have no double taxation treaty. This means a German tax resident earning rental income from a Dubai property is subject to UAE tax (currently zero) and German income tax at their marginal rate (up to 45% plus solidarity surcharge). The absence of a treaty does not create double taxation in this case — since the UAE levies no tax — but it does mean the German investor cannot claim any foreign tax credit. The full German income tax rate applies to Dubai rental income, which significantly reduces the effective yield advantage of the UAE's zero-tax environment for German investors. ## Germany–Turkey: Treaty in Force Germany and Turkey have a double taxation treaty covering income from immovable property. Rental income from an Istanbul property is taxable in Turkey and is also reportable in Germany, where a credit is given for the Turkish tax paid. As with Spain, a German investor in a high marginal bracket may owe additional German tax on top of the Turkish liability. Gains on immovable property are allocated primarily to Turkey. ## Germany–Spain: Treaty in Force Germany and Spain have a comprehensive DTT. Rental income from Spanish property is taxable in Spain (at 19% for EU residents under IRNR) and is also reportable in Germany, where a credit is given for the Spanish tax paid. For German investors in a high marginal bracket, additional German tax may be due. The treaty also covers capital gains, which are taxable in Spain at 19% for EU residents, with a credit available in Germany. ## Spain–UAE: No Treaty Spain and the UAE have no double taxation treaty. A Spanish tax resident earning rental income from a Dubai property pays zero UAE tax but must declare the income in Spain and pay Spanish income tax at their marginal rate. This is the same outcome as the Germany–UAE situation: the UAE's zero-tax advantage is fully offset by the investor's home country tax for residents of countries without a UAE treaty. ## UK, France, and Italy with UAE The UK has a double taxation treaty with the UAE, signed in 2016. Under this treaty, income from UAE immovable property is taxable only in the UAE — meaning UK residents can receive Dubai rental income free of UK income tax, provided the income is properly structured and reported. This is a significant advantage for UK investors compared to their German, Spanish, or French counterparts. France and Italy do not have comprehensive DTTs with the UAE, meaning their residents face home country taxation on Dubai rental income. ## Practical Steps for Treaty Relief To claim treaty relief, investors must typically file a tax return in their country of residence declaring the foreign income, attach documentation of the tax paid in the source country, and claim the applicable credit or exemption. In some jurisdictions, a certificate of residence from the home country tax authority must be submitted to the source country to access the reduced withholding rate. Investors should not assume that treaty benefits apply automatically — active steps are required to claim them. Explore verified investment opportunities across markets: [View Live Deals](/deals)