Turkey VAT Number (VKN): The 2026 Corporate Guide

As Turkey continues to position itself as a central hub for international trade, manufacturing, and digital commerce, navigating its tax regulations is critical for global businesses. Whether you are importing goods, establishing a subsidiary, or paying a Turkish supplier, understanding how the local taxation and invoicing system works is a mandatory step for corporate compliance.

Note: Foreign individuals who need a personal tax number before opening a bank account or buying property can follow our guide on [How to Get a Tax Number in Turkey]. This guide is strictly designed for B2B entities, financial managers, and corporate operations.

What Is a VAT Number in Turkey?

Unlike many European Union member states that issue a distinct and separate Value Added Tax (VAT) number alongside a general corporate tax number, Turkey utilizes a streamlined, single-identifier system. In Turkey, businesses use their standard Tax Identification Number (Vergi Kimlik Numarası – VKN) as their universal VAT identification number for all corporate, commercial, and tax-related transactions.

In the Turkish financial system, Value Added Tax is locally referred to as KDV (Katma Değer Vergisi). Because Turkey has highly digitalized its tax infrastructure over the past decade, whenever a business operates, issues electronic invoices, or clears customs, the VKN serves as the sole identifier utilized by the Turkish Revenue Administration (GİB). This number allows the government to track KDV liabilities, input credits, and corporate tax obligations.

VAT Number vs Tax ID vs VKN in Turkey

Foreign business partners, procurement officers, and accounting departments often get confused by the varying terminology used in cross-border trade communications. When dealing with Turkish suppliers or establishing a company, it is vital to understand that in the Turkish B2B environment, all these English terms point to the exact same 10-digit identifier.

Term in International Trade	Equivalent System in Turkey
VAT Number	VKN (Vergi Kimlik Numarası)
Tax ID (for businesses)	VKN
VAT ID	VKN
TIN (Taxpayer Identification Number)	VKN

Note for Sole Proprietors: While corporate entities use a 10-digit VKN, sole proprietors and freelancers in Turkey use their 11-digit Turkish Identification Number (TCKN) as their VAT identifier for all commercial invoicing.

Turkey VAT Number Format & Example

For corporate entities and registered businesses, the Turkish tax identification number follows a 10-digit format. The exact generation algorithm is not publicly disclosed by the Turkish Revenue Administration (GİB).

For international transactions, Turkish VAT identification numbers may be displayed with the country prefix “TR” before the 10-digit VKN.

Example of a Turkish B2B VAT Number:
TR1234567890 (often written without spaces in ERP and accounting systems)

When Is a Turkish VAT Number Required?

A VKN is the backbone of all commercial operations in Turkey. A corporate entity must present this number for:

• Company Incorporation & Capital Deposit: It is required immediately during the initial setup at the Trade Registry.
• E-Invoicing (e-Fatura & e-Arşiv): Turkey mandates electronic invoicing for most B2B transactions. The VKN is the primary routing number that ensures an e-Fatura reaches the correct recipient’s accounting software.
• Customs Clearance & Logistics: Mandatory for both importing goods into Turkey and exporting products abroad.
• Corporate Banking & Payroll: Required to operate commercial bank accounts, secure corporate loans, and process employee payroll taxes (SGK).

Who Needs a VAT Number in Turkey?

The “No Threshold” Approach

Turkey generally does not apply a general VAT registration threshold based on annual turnover. Businesses conducting taxable activities are required to register according to Turkish tax rules, meaning registration is often necessary before executing the first taxable transaction or issuing an invoice.

Foreign Companies & The Reverse Charge Mechanism

One of the most common questions from foreign investors is whether they need a local VAT number if they don’t have a physical branch in Turkey. The answer depends on the business model:

• B2B Services (Reverse Charge): If a foreign company provides B2B services to a Turkish company, the foreign entity generally does not need to register for a Turkish VAT Number. Instead, the Turkish corporate buyer is responsible for declaring and paying the VAT on behalf of the foreign supplier through the “Reverse Charge” mechanism (Sorumlu Sıfatıyla KDV).
• B2C Digital Services: Foreign digital service providers supplying services directly to Turkish consumers may have specific VAT registration and reporting obligations under Turkish VAT rules. We highly recommend consulting specialized Turkey Tax Law Services to ensure full compliance.

Importers

Any foreign or domestic entity acting as the Importer of Record (IOR) to clear goods through Turkish customs must hold a valid VKN.

How to Register for a Turkey VAT Number

Obtaining a VKN is the foundational step of corporate formation and tax compliance. For a comprehensive overview of setting up your corporate entity, see our complete guide on Company Formation in Turkey.

Required Corporate Documents

Foreign investors establishing an entity will generally need to provide notarized and apostilled copies of:

• Articles of Association
• Official Signature Circular (İmza Sirküleri)
• Trade Registry Certification

Note: The tax office may request proof of the registered business address (such as a lease agreement) as part of the verification process.

The Registration Process

• MERSİS Entry: The process begins by entering the company’s data into MERSİS (Central Trade Registry System), generating a “potential” tax number (Potansiyel Vergi Kimlik Numarası).
• Trade Registry Approval: Once the Chamber of Commerce approves the incorporation, the data is automatically transmitted to the tax authorities.
• Tax Office Activation: The potential tax number becomes the official VKN.
• CPA Integration: Finally, the VKN must be managed by a registered Certified Public Accountant (Mali Müşavir) in Turkey, who links the company’s accounting infrastructure to the state’s e-Fatura system.

How to Verify a Turkey VAT Number

Before paying a large commercial invoice from a new Turkish supplier, international accounting departments must perform standard invoice validation to prevent tax fraud.

Official GİB Verification

The primary and most accurate source for verifying a Turkish VAT Number is the official portal of the Turkish Revenue Administration (GİB – ivd.gib.gov.tr). When verifying a VKN, financial controllers must confirm three critical data points:

• Taxpayer Status: Ensure the company is currently “Active”.
• Tax Office Match: The registered Tax Office (Vergi Dairesi) shown on the portal must match the one printed on the invoice.
• Exact Legal Name: Do not rely solely on commercial brand names or website logos. Fraudsters often use valid VKNs of legitimate companies under fake brand names. The exact corporate legal name must match the billing entity.

Can You Verify via VIES?

No. Because Turkey is not a member of the European Union, the European Commission’s VIES (VAT Information Exchange System) does not support or recognize Turkish VAT numbers. However, if a Turkish company is conducting cross-border trade with an EU-based business (e.g., a supplier in Germany or France), you can and should use the VIES portal to validate the EU counterparty’s VAT number.

MERSİS Verification for Due Diligence

For thorough B2B due diligence, verifying the VKN via the tax office is not always enough. You should cross-reference the company using the MERSİS portal (Central Trade Registry System). While the VKN is a 10-digit tax code, the MERSİS number is a 16-digit code proving the legal commercial existence, shareholding structure, and executive board of the entity.

Common Mistakes About Turkish VAT Numbers

• Confusing VKN with MERSİS: Assuming the 16-digit MERSİS registry number on an invoice is the VAT number. (The VAT number is always 10 digits).
• VIES Checks: Wasting time trying to validate a Turkish supplier on the EU VIES portal.
• Trade Name vs. Legal Name: Approving an invoice where the VKN is valid, but it belongs to a different legal entity than the brand name being dealt with.
• Using an Inactive VKN: Accepting an invoice without checking the taxpayer’s current status on the GİB portal. A previously valid VKN may now be inactive or suspended by tax authorities.

How VAT Works in Turkey

For B2B operations, the Turkish VAT (KDV) system operates on an input-output offset mechanism, strictly monitored through the electronic invoicing system:

• Offsetting Mechanism: Companies deduct the VAT they pay on corporate purchases (Input VAT) from the VAT they collect on sales (Output VAT). They remit the difference to the tax authority.
• Filing Frequency: VAT returns in Turkey are filed on a monthly basis. The declaration and payment must be submitted by the 26th day of the following month.
• VAT Refunds (KDV İadesi): If a Turkish company exports goods (which are zero-rated for VAT), they accumulate excess Input VAT. The Turkish government allows these exporters to claim a VAT refund, providing a vital cash flow advantage.

Turkey VAT Rates (2026)

Understanding the current KDV brackets is essential for accurate invoice generation.

• Standard Rate (20%): Applies to the vast majority of commercial goods, corporate services, electronics, software, professional consulting, and general B2B transactions.
• Reduced Rate (10%): Applies to specific categories of goods and services defined under Turkish VAT legislation, including certain food products, accommodation services, and other designated sectors.
• Super Reduced Rate (1%): Restricted to specific essential agricultural products, raw food staples, and designated printed publications/newspapers as defined by law.

Where Can You Find a Turkish VAT Number?

If you are dealing with a Turkish supplier or business partner, you can typically find their 10-digit VAT number (VKN) on the following official documents:

• Commercial Invoices: Both standard and proforma invoices.
• e-Fatura Documents: The official electronic invoice format mandated in Turkey.
• Tax Certificates (Vergi Levhası): A public tax registration document that Turkish companies often display or share upon request.
• Official Company Records: Including Trade Registry Gazette publications and MERSİS records.