Let’s explain the question “What is an invoice title?” in a clear and straightforward way. An invoice title refers to the legally registered name of a business. This title is used on all official invoice documents and represents the name under which the business is legally recognized.
The invoice title identifies the seller of the goods or services listed on the invoice. It also includes details such as the company name, or in the case of individuals, the person’s first and last name, along with the registered tax office and tax identification number.
How Is an e-Invoice Title Changed?
Businesses using the e-Invoice system must follow a specific procedure if they change their title.
If an e-Invoice user changes their business title, they must apply to the Revenue Administration (Gelir İdaresi Başkanlığı) by mail within 15 days of the change. The application must include a photocopy of the Trade Registry Gazette announcing the title change and a petition explaining the situation.
In addition, an application must be submitted electronically to the Public Certification Authority to obtain a new financial seal that reflects the updated title.
Another frequently asked question is “What is an individual invoice title?” An individual invoice title refers to the first and last name used on invoices issued by individuals using their tax identification number.
If you are not a registered taxpayer, you may write your full name in the invoice title field when issuing an invoice as an individual customer. Providing this information correctly is essential for the invoice to be considered valid.
In individual invoices, the invoice title generally consists of the customer’s first and last name. In addition, personal details such as the tax identification number and Turkish ID number are also included on the invoice.
You may wonder whether invoice titles differ abroad. Yes, invoice titles and invoice requirements vary from country to country. Therefore, when issuing invoices for international transactions, it is necessary to comply with the invoicing regulations of the relevant country.
The invoice title is essential for a business to be legally recognized. It also serves as proof that the business operates in compliance with tax regulations.
Beyond legal validity, the invoice title should accurately and clearly represent the identity of the business. This clarity helps build trust with customers.
The invoice title must include the business’s correct address and tax identification number, enabling customers to verify the company’s legal status and tax compliance.

For an invoice to be legally valid, certain information specified by law must be included. Completing these details accurately and fully is crucial.
The required invoice information generally includes:
Seller’s name, address, phone number, and email address
Customer’s name, address, and contact details
Invoice issue date
Invoice serial and number
Clear description, quantity, and unit price of the goods or services
VAT rate and VAT amount
Total invoice amount (including or excluding VAT)
Payment method and payment date
Delivery note number
Tax identification number
Including all of this information ensures that the invoice complies with legal and tax regulations. However, it should be noted that required invoice details may vary depending on the country.
When choosing an appropriate invoice title, the following points should be taken into account:
The invoice title must exactly match the company’s officially registered name.
If there is a difference between the commercial title and the invoice title, it is important to determine which one should be used.
The invoice title should not contain spelling errors or missing words, as such mistakes may negatively affect payment and accounting processes.
The title should accurately reflect the company’s field of activity.
The invoice title should be clear, readable, and professional in appearance, making it easier for customers to identify the business.