Turkish tax law operates through a framework of interacting primary statutes — the Corporate Tax Law (Kurumlar Vergisi Kanunu, Law No. 5520), the Income Tax Law (Gelir Vergisi Kanunu, Law No. 193), the Value Added Tax Law (Katma Değer Vergisi Kanunu, Law No. 3065), and the Tax Procedure Law (Vergi Usul Kanunu, Law No. 213) — supplemented by secondary legislation, GİB (Gelir İdaresi Başkanlığı) communiqués, and a body of administrative rulings (özelge) that define the Revenue Administration's current interpretive position on specific transactions. Turkey's tax law has been significantly influenced by OECD standards, with transfer pricing rules aligned with the OECD Transfer Pricing Guidelines, thin capitalization rules modeled on OECD recommendations, and an increasingly BEPS-aligned compliance framework. For international companies operating in Turkey, the domestic tax framework must be read in conjunction with Turkey's extensive double taxation treaty network (over 90 treaties currently in force) to determine the applicable withholding rates, permanent establishment risks, and available relief mechanisms. The Turkish Revenue Administration's official portal for tax rulings, legislation, and GİB guidance is accessible at gib.gov.tr. This page sets out how we work across the main tax law representation categories.
Corporate tax and incentive planning
A lawyer in Turkey advising on corporate tax planning must explain that the current corporate tax rate in Turkey is 25% on taxable income (as of the 2025 fiscal year), but the effective tax rate for a specific company can be significantly reduced through legitimate incentive mechanisms — including R&D and design center deductions, Technology Development Zone (Teknoloji Geliştirme Bölgesi) profit exemptions, free zone tax benefits for qualifying exporters, investment incentive certificates that provide corporate tax rate reductions for specific investment projects, and the 75% exemption on capital gains from the sale of real estate and participation shares held for at least two years. Each incentive mechanism has specific eligibility conditions, documentation requirements, and claiming procedures — and the failure to correctly document or claim an applicable incentive at the time of the original tax filing creates complications in obtaining the benefit through amendment or audit challenge. Practice may vary by authority and year — verify the current corporate tax rate, applicable incentive eligibility conditions, and current GİB guidance on incentive documentation requirements before finalizing any corporate tax planning strategy, as rates and incentive conditions are subject to annual legislative changes.
An Istanbul Law Firm advising on thin capitalization and controlled foreign company rules must explain that KVK Article 12 sets a thin capitalization threshold of 3:1 (debt-to-equity ratio) for related-party borrowings — interest paid on debt that exceeds this threshold is treated as a constructive dividend, not deductible, and subject to withholding tax. KVK Article 7 introduces controlled foreign company (CFC) rules for Turkish companies with shareholdings in foreign entities where the foreign entity pays low or no tax on passive income and meets specific control and income composition thresholds — CFC income is included in the Turkish parent's taxable income regardless of distribution. Both provisions require specific fact-pattern analysis to apply correctly, and many international group structures inadvertently create thin capitalization or CFC exposure that was not anticipated at the structure planning stage. Practice may vary — verify current KVK thin capitalization ratio thresholds and CFC application conditions, including the specific passive income categories subject to CFC inclusion, before advising on any related-party financing or foreign subsidiary structure involving Turkish entities.
Transfer pricing and BEPS compliance
A law firm in Istanbul advising on transfer pricing must explain that KVK Article 13 requires that transactions between related parties be conducted at arm's length prices — and that companies whose related-party transactions exceed defined annual thresholds must prepare transfer pricing documentation (Local File, Master File for groups exceeding revenue thresholds, and Country-by-Country Report for the ultimate parent of groups exceeding the relevant threshold) to support the arm's length nature of their intercompany pricing. The critical difference between Turkish transfer pricing enforcement and that of many other jurisdictions is the relatively aggressive GİB inspection approach: transfer pricing audits in Turkey are not primarily triggered by statistical anomalies in the company's return, but are conducted as part of sectoral and large-taxpayer audit programs, and the burden falls on the company to demonstrate the arm's length nature of its pricing. A transfer pricing file that was adequate for compliance purposes when last prepared may no longer reflect the company's current transaction profile or the most recent GİB guidance on benchmarking methodology. Practice may vary by authority and year — verify current KVK Article 13 documentation thresholds, the current GİB transfer pricing general communiqué (currently Seri No. 1), and Country-by-Country Report filing deadlines before finalizing any transfer pricing documentation program.
An English speaking lawyer in Turkey advising on Advance Pricing Arrangements (APA) must explain that Turkish tax law (KVK Article 13/5) permits taxpayers to apply to GİB for an advance determination of the transfer pricing methodology and price for specific related-party transactions — providing certainty for a defined period and eliminating transfer pricing audit risk for the covered transactions. The APA application process requires detailed documentation of the covered transactions, the proposed methodology, the benchmarking analysis, and the agreed pricing range. Bilateral APA (where both Turkey and the counterparty jurisdiction agree on the pricing) eliminates double taxation risk but requires coordination between GİB and the relevant foreign competent authority under the applicable double taxation treaty. We prepare APA applications and represent clients through the negotiation process with GİB. Practice may vary — verify current GİB APA application procedures and the specific bilateral APA mechanisms available under the relevant double taxation treaty before commencing any APA process.
VAT and indirect tax compliance
A Turkish Law Firm advising on Turkish VAT (KDV) compliance must explain that Turkish VAT law (KDVK, Law No. 3065) imposes VAT at the current standard rate on most taxable supplies of goods and services in Turkey, with reduced rates applicable to specified categories (currently 10% and 1% for specific goods and services) and various exemptions for exports, diplomatic missions, international transport, and certain financial services. The specific rate or exemption applicable to a given supply depends on the nature of the supply and the identity of the parties, and misclassification of a supply's VAT treatment creates both underpayment risk (additional tax plus late interest) and overpayment risk (reduced competitiveness and cash flow burden). For imported goods, VAT is levied at the applicable rate on the customs value plus customs duty — and VAT paid on importation is creditable against output VAT for registered taxable persons. Practice may vary by authority and year — verify current KDV standard and reduced rates, the specific categories currently qualifying for reduced rates, and any recent GİB guidance on the VAT treatment of your specific transaction type before finalizing any VAT compliance framework.
A lawyer in Turkey advising on VAT refunds must explain that Turkish VAT law permits taxable persons whose input VAT consistently exceeds output VAT — typically exporters, investment project companies, and businesses making exempt supplies — to request a refund of the excess input VAT. The refund process requires submitting a refund application to GİB (through the online GİBİNTRANET system), supported by the specific documentation required for the relevant refund category. GİB processes refunds through three channels: cash refund (fastest but subject to a comprehensive audit of the refund period), tax offsetting (application of the refund credit against other tax liabilities), and export-linked accelerated refund (for exporters with certified refund status). The documentation requirements and audit scope for each channel differ, and selecting the appropriate refund strategy requires assessing the company's audit exposure, the urgency of the cash recovery, and the availability of alternative tax liabilities for offsetting. Practice may vary — verify current GİB KDV refund documentation requirements and the specific processing timelines for each refund channel before structuring any VAT refund application. The VAT compliance Turkey framework is analyzed in the resource on VAT compliance lawyer Turkey.
Tax inspections, disputes, and litigation
An Istanbul Law Firm advising on GİB tax inspections must explain that a Turkish tax inspection (vergi incelemesi) conducted by tax inspectors (vergi müfettişleri) of the Revenue Administration — as opposed to the simpler tax examination conducted by tax office staff — produces a Tax Inspection Report (vergi inceleme raporu) that is the primary basis for any additional tax assessment. The taxpayer receives the draft inspection report and has 15 days to submit written objections (mukabele beyannamesi) before the final assessment is issued. This 15-day objection period is critically important: objections filed at this stage have a direct impact on the final assessment, while the challenge mechanisms available after the final assessment is issued (tax appeal to the assessment commission, tax court lawsuit) address the final assessment rather than the inspection report's methodology. We engage with the inspection process from the first notification — preparing documentation, managing inspector communications, and building the objection file in parallel with the inspection so that the 15-day objection window can be used effectively rather than spent on gathering information. Practice may vary by authority and year — verify current VUK tax inspection objection procedures and the specific assessment commission mediation mechanisms available for the relevant tax type and assessment period.
A law firm in Istanbul advising on tax litigation must explain that Turkish tax disputes proceed through an administrative phase and a judicial phase. In the administrative phase, a taxpayer who disagrees with a final tax assessment may request Conciliation (Uzlaşma) — a GİB-administered negotiation process in which the taxpayer and a GİB representative seek agreement on the disputed assessment, which if reached eliminates the right to further appeal but typically reduces the tax and penalty amount. If conciliation fails or is not sought, the taxpayer files a lawsuit before the competent Tax Court (Vergi Mahkemesi) within 30 days of the assessment. Tax Court decisions are subject to appeal to the Regional Administrative Court (Bölge İdare Mahkemesi) and then to the Council of State (Danıştay) as the final court of appeal. We manage the complete dispute lifecycle — pre-inspection documentation through Council of State appeal — with a unified strategy that considers the settlement value of the conciliation option against the litigation prospects and the interest exposure of a prolonged dispute. Practice may vary — verify current VUK conciliation eligibility conditions and the specific tax court filing deadlines applicable to the type of assessment before initiating any tax dispute. The tax dispute resolution Turkey framework is analyzed in the resource on tax dispute resolution Turkey.
Personal tax and residency planning for foreign nationals
An English speaking lawyer in Turkey advising on personal tax obligations for foreign nationals must explain that Turkey taxes individuals on the basis of tax residency — a person who is resident in Turkey (defined as being present in Turkey for more than 183 days in a calendar year, or having a principal place of abode in Turkey) is taxed on their worldwide income from Turkish sources, while a non-resident is taxed only on Turkish-source income. Foreign nationals who purchase property in Turkey or obtain a residence permit do not automatically become tax residents — tax residency is determined by the 183-day presence test. However, a foreign national who does become tax resident in Turkey must declare their worldwide income on their Turkish annual income tax return, subject to any relief available under an applicable double taxation treaty. Practice may vary by authority and year — verify current GVK (Income Tax Law) residency determination criteria and the applicable treaty relief mechanisms for the specific source country before advising on any personal tax residency planning for a foreign national.
A Turkish Law Firm advising on foreign-source income declarations for Turkish tax residents must explain that Turkey's personal income tax applies to all categories of income at progressive rates under the current GVK bracket structure — including employment income, business income, rental income, capital gains, and investment income from both Turkish and foreign sources for residents. The specific treatment of foreign-source income (particularly dividends, interest, and capital gains from foreign entities) depends on the nature of the income, the applicable double taxation treaty, and whether Turkish tax credits are available for foreign taxes paid on the same income. For high-net-worth foreign nationals who have become Turkish tax residents, the interaction between Turkish personal tax obligations and their home country's exit tax, worldwide income reporting obligations, and any controlled foreign entity rules requires specific analysis and coordination between Turkish and home country tax advisers. Practice may vary — verify current GVK income brackets and the specific double taxation treaty provisions applicable to the relevant source country income categories before finalizing any personal tax compliance strategy. The tax residency foreigners Turkey framework is analyzed in the resource on tax residency foreigners Turkey.
International tax structuring and cross-border transactions
A lawyer in Turkey advising on international tax structuring must explain that the most significant cross-border tax risk for foreign groups with Turkish operations is the creation of an unintended permanent establishment (sabit işyeri) in Turkey — a factual determination that the foreign company has a sufficient taxable presence in Turkey to trigger Turkish corporate tax liability on the profits attributable to that presence. Common PE triggers include: a Turkish subsidiary that acts as a dependent agent with authority to conclude contracts on behalf of the foreign parent; service arrangements where foreign employees regularly perform services in Turkey; and construction projects with a duration exceeding the threshold in the applicable double taxation treaty. We assess PE risk as the first step in any international structure involving Turkish operations and identify structural modifications that eliminate or manage the risk while preserving commercial substance. Practice may vary by authority and year — verify current GİB interpretation of permanent establishment under both KVK provisions and the applicable double taxation treaty before finalizing any cross-border service or agency arrangement involving Turkish activities.
An English speaking lawyer in Turkey advising on withholding tax optimization must explain that Turkey imposes withholding taxes on various cross-border payments — dividends (15% domestic rate), interest (10% domestic rate), royalties (20% domestic rate), and service fees (20% domestic rate for certain services) — but these rates are frequently reduced by applicable double taxation treaties, sometimes to zero for qualifying payments. Accessing treaty-reduced rates requires the payment recipient to provide a current tax residence certificate from the competent authority of their residence country, and the Turkish payor must withhold at the domestic rate if the certificate is not available at the time of payment (with treaty relief then available through a refund application). We identify the applicable treaty rates for each payment category, structure the documentation requirements, and ensure that treaty residency certificates are obtained and maintained for all significant cross-border payment flows. Practice may vary — verify current treaty withholding rates applicable to payments to entities in the relevant residence country, as treaty rates and residency certificate formats are updated, and current GİB guidance on treaty relief procedures before finalizing any cross-border payment structure. The Istanbul Bar Association at istanbulbarosu.org.tr provides resources for identifying qualified practitioners. Practice may vary — check current guidance before acting on any information on this page.
Frequently Asked Questions
- What is the current corporate tax rate in Turkey? 25% for the 2025 fiscal year. Practice may vary by authority and year — the corporate tax rate is set annually through the budget law and has been revised several times in recent years. Verify the current applicable rate before any tax planning.
- What is the standard VAT rate in Turkey? The standard KDV rate is currently 20%, with reduced rates of 10% and 1% for specified goods and services. Practice may vary — verify the current rates and whether any rate changes have been enacted before finalizing any VAT compliance framework.
- What is the thin capitalization threshold under Turkish corporate tax law? KVK Article 12 sets a 3:1 debt-to-equity ratio for related-party borrowings. Interest on related-party debt exceeding this ratio is non-deductible and treated as a constructive dividend subject to withholding tax.
- What is the deadline for objecting to a tax inspection report? 15 days from receipt of the draft inspection report. This objection period is critical — it is the most effective stage for challenging the inspection's methodology and factual basis. After the final assessment is issued, the available remedies shift to conciliation and tax court litigation.
- Can a taxpayer negotiate a reduction in a disputed tax assessment? Yes — through the Uzlaşma (Conciliation) process administered by GİB, which typically results in a reduction of the assessed tax and penalties. Conciliation eliminates the right to further appeal for the settled amount. If conciliation fails, a Tax Court lawsuit must be filed within 30 days of the assessment notification.
- What is the transfer pricing documentation threshold? Related-party transaction documentation requirements apply above defined annual transaction thresholds. Master File and Country-by-Country Report requirements apply to companies above revenue thresholds. Practice may vary — verify current KVK Article 13 and the Seri No. 1 communiqué thresholds before assessing your documentation obligations.
- Does owning property in Turkey make a foreign national a Turkish tax resident? No — property ownership does not create tax residency. Tax residency is determined primarily by the 183-day presence test under GVK. A foreign property owner who does not exceed 183 days presence is taxed only on Turkish-source income, not worldwide income.
- What happens if a foreign company has employees regularly working in Turkey? The foreign company may be creating a permanent establishment in Turkey, which would trigger Turkish corporate tax liability on profits attributable to the Turkish activities. This is a fact-specific analysis under both KVK and the applicable double taxation treaty.
- Can VAT overpayments be recovered in Turkey? Yes — through the KDV refund process for eligible taxpayers including exporters, investment project companies, and businesses making exempt supplies. The refund application is submitted through the GİBİNTRANET system and is subject to documentation requirements and GİB review.
- What is an Advance Pricing Arrangement (APA) in Turkey? An APA under KVK Article 13/5 is an agreement with GİB on the transfer pricing methodology and price for specific related-party transactions, providing certainty and eliminating transfer pricing audit risk for covered transactions during the agreement period. Bilateral APAs require coordination with the counterparty jurisdiction under the applicable double taxation treaty.
Author: Mirkan Topcu is an attorney registered with the Istanbul Bar Association (Istanbul 1st Bar), Bar Registration No: 67874. His practice focuses on cross-border and high-stakes matters where evidence discipline, procedural accuracy, and risk control are decisive.
He advises corporations, investors, and international groups across Corporate Tax Law, Transfer Pricing, VAT Compliance, Tax Dispute Resolution, and International Tax Structuring matters where regulatory precision and cross-border coordination are decisive.
Education: Istanbul University Faculty of Law (2018); Galatasaray University, LL.M. (2022). LinkedIn: Profile. Istanbul Bar Association: Official website.
