Financial Seal vs. E-Signature: Which One for e-Invoice and e-Ledger?

Businesses moving to e-Invoice or e-Ledger often ask: "Do I need a financial seal or an e-signature?" Both are electronic certificates, but they serve different purposes.

E-signature

• Belongs to a person, issued to your Turkish ID number.
• Has the same legal effect as a handwritten signature under Law No. 5070.
• Used for e-Government, UYAP, EKAP, SGK, KEP and official correspondence. Sole proprietors can also use it for e-Invoice and e-Ledger.

Financial seal (mali mühür)

• Belongs to a legal entity, issued to the company's tax number by the Public Certification Center (Kamu SM).
• Works like the company's electronic stamp in Revenue Administration applications such as e-Invoice, e-Archive and e-Ledger.

Most companies have both: a financial seal for the company and an e-signature for the authorized person. We sell e-signatures, KEP addresses and timestamps; the financial seal is applied for through Kamu SM.

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