A foreign investor with income in Türkiye and a tax residence elsewhere faces an obvious problem: two states with a plausible claim to tax the same income. Double taxation treaties exist to allocate that claim, and Türkiye has concluded them with a large number of countries. This article explains how the treaties work in practice, which reliefs actually matter to foreign investors, and what has to be done to claim them.
Why treaties exist
Domestic tax law is written from a single state's perspective. Türkiye taxes residents on worldwide income and non-residents on Turkish-source income. Most other states do something similar. Applied simultaneously, the two systems tax the same income twice.
A double taxation treaty resolves this by allocating taxing rights between the two states — sometimes exclusively to one, more often to both with the residence state giving credit or exemption for tax paid in the source state. Treaties also reduce withholding rates on cross-border payments and provide a mechanism for resolving disputes between the two administrations.
Türkiye has an extensive treaty network covering most of Europe, the Gulf, Central Asia, and its major trading partners. Whether a treaty exists with a particular country, and what it says, must be checked individually — treaties are not uniform.
The first question: where are you resident?
Everything in a treaty analysis follows from residence, and residence is a technical concept rather than a matter of choice.
Under Turkish law, an individual is generally treated as resident where they have a residence in Türkiye or stay in the country for more than six months in a calendar year, subject to exceptions. A company is resident where its legal seat or place of effective management is in Türkiye.
Where both states treat a person as resident, the treaty's tie-breaker provisions apply — for individuals, typically permanent home, then centre of vital interests, then habitual abode, then nationality. These are applied in order, and the outcome is frequently different from what the taxpayer assumed.
A point that recurs with investors: acquiring Turkish citizenship does not make you Turkish tax resident. Residence turns on presence and connection, not on nationality. An investor who obtains citizenship and continues living abroad remains a non-resident for Turkish tax purposes.
The reliefs that matter to foreign investors
Dividends. Turkish domestic law applies withholding on dividends paid to non-residents. Treaties commonly reduce the rate, often with a lower rate where the recipient company holds a substantial participation in the payer. For a foreign parent extracting profits from a Turkish subsidiary, this is usually the single most valuable provision in the treaty.
Interest. Withholding on interest paid abroad is commonly reduced, with exemptions in some treaties for interest paid to the other state, its central bank or public bodies.
Royalties. Payments for the use of intellectual property attract withholding, generally reduced by treaty. Where a foreign group licenses technology or brands to a Turkish subsidiary, the rate and the characterisation of the payment both matter.
Business profits and permanent establishments. A foreign enterprise's business profits are generally taxable in Türkiye only if it has a permanent establishment here. What constitutes one — a fixed place of business, a dependent agent with authority to conclude contracts, a construction site exceeding a defined duration — is defined in the treaty and is the pivotal question for any foreign company operating without a subsidiary.
Immovable property. Income from property is taxable where the property is, and treaties do not change this. Rental income from Turkish property is taxable in Türkiye regardless of the owner's residence.
Capital gains. Treatment varies considerably by treaty. Gains on immovable property are generally taxable where the property is; gains on shares are treated differently in different treaties, sometimes with special rules for property-rich companies. This provision must be read rather than assumed.
Employment income. Taxable where the work is performed, subject to the common exception for short assignments where the employer is not resident in the host state and the cost is not borne by a permanent establishment there.
Claiming treaty benefits
Treaty relief is not automatic. The recurring requirement is a certificate of residence issued by the tax authority of the other state, establishing that the recipient is resident there for treaty purposes.
Practical points that determine whether relief is actually obtained:
- The certificate must be provided to the Turkish payer before the payment, so that reduced withholding can be applied at source. Reclaiming over-withheld tax afterwards is possible and slow.
- Certificates are generally valid for a calendar year and must be renewed.
- They must be apostilled and translated where required.
- Beneficial ownership provisions apply: relief is denied where the recipient is a conduit rather than the beneficial owner of the income.
- Anti-abuse provisions, including principal purpose tests in treaties updated under the multilateral instrument, may deny benefits to arrangements whose principal purpose was obtaining them.
Groups that route payments through an intermediate jurisdiction purely for the withholding rate should expect that structure to be examined.
The permanent establishment risk
For a foreign company selling into Türkiye without a subsidiary, the central question is whether its activity creates a permanent establishment. If it does, Turkish tax applies to the profits attributable to it, with filing obligations, and the assessment can be retrospective.
Situations that commonly create exposure:
- an employee or agent in Türkiye who habitually concludes contracts, or plays the principal role leading to their conclusion;
- a fixed place of business — an office, a workshop, a warehouse used beyond storage;
- a construction or installation project exceeding the treaty's duration threshold;
- a liaison office that in substance carries on commercial activity.
The last of these is the most common among foreign groups in Türkiye, and the one that produces the largest surprises.
Practical steps for a foreign-owned Turkish business
- Establish the residence position for both the company and its key individuals, applying the tie-breakers where needed.
- Read the applicable treaty — not a summary, and not another country's treaty.
- Obtain residence certificates annually and provide them before payments are made.
- Review whether any activity creates a permanent establishment, and document the conclusion.
- Ensure transfer pricing documentation supports intra-group charges — management fees, royalties, cost allocations.
- Coordinate with advisers in the other state; a Turkish-only analysis answers half the question.
Frequently asked questions
Does Türkiye have a treaty with my country? The network is extensive but not universal. Check the specific country.
Does Turkish citizenship make me taxable in Türkiye? No. Residence, not nationality, determines the position.
Is rental income from my Turkish property taxable here? Yes. Income from immovable property is taxed where the property is.
Can I reclaim over-withheld tax? Generally yes, by refund claim. Providing the residence certificate in advance avoids it.
Do treaties reduce Turkish corporate tax? They allocate taxing rights and reduce withholding; they do not reduce the domestic rate on a Turkish company's profits.
What is a certificate of residence? A document from the other state's tax authority confirming treaty residence. Usually required annually.
Does a liaison office create a permanent establishment? Not if it stays within representative activity. If it trades, yes — retrospectively.
Where legal and tax advice meet
Treaty analysis sits between two jurisdictions and between law and accounting. What a Turkish lawyer contributes is the domestic position, the structure, and the documentation that supports it; the analysis in the other state has to come from there.
Dural Hukuk advises foreign investors on Turkish tax residence, permanent establishment exposure and structuring, and coordinates with clients' advisers in their home jurisdictions. Call +90 535 260 74 54 or use the contact form on this site.
This article is general information on Turkish law as at August 2026 and is not tax advice. Treaty provisions differ by country and are periodically amended; obtain advice on the applicable treaty and your own circumstances.