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Qualified electronic signature (QES)

Document flow

A qualified electronic signature (QES) is an electronic signature equivalent to a handwritten one, giving documents full legal force, issued by accredited certification centers.

What is a QES

A qualified electronic signature (QES) is a type of electronic signature equivalent to a handwritten signature on a paper document, giving documents full legal force. The QES is created using cryptographic tools certified by the FSB of Russia and is issued by accredited certification centers. The QES is mandatory for legally significant electronic document flow (LSEDF), public procurement and reporting to the FNS.

How the qualified electronic signature (QES) works Diagram of how QES works: key generation at a certification authority → signing a document with a private key → signature verification with a public key, using CIPF and GOST algorithms. How QES works Qualified electronic signature Certification authority (CA) 🔑 Private key (Stored on a token) Only the owner has it 🔓 Public key (In the certificate) Available to everyone 1. Signing Document + Private key → Electronic signature 2. Signature verification Document + Signature + Public key Legal force = Handwritten signature + Seal
Qualified electronic signature (QES) — diagram 1

How the QES works

  1. Key creation — a pair of keys is generated.
  2. Signing — the owner signs the document with a private key.
  3. Verification — the recipient checks the signature with a public key.
  4. Confirmation — the document becomes legally significant.

Where the QES is used

Public procurement, document flow, tax reporting, government services, corporate governance, court processes.

Application areas of the qualified electronic signature (QES) Diagram of QES use in public procurement, document exchange, tax reporting, government services, corporate management with integration into CIPF and certification authorities. Application areas of QES Where the qualified electronic signature is used QES 📋 Procurement 44-FZ / 223-FZ Submitting bids Signing contracts 📄 Document flow L-EDO Contracts Acts / Invoices 📊 Tax reporting FTS / SIF Declarations Interaction 🏛️ Public services Portal Applications Certificates 🏢 Corporate management Orders · Meeting decisions · Internal documents Legal significance + Security + Speed
Qualified electronic signature (QES) — diagram 2

Advantages of the QES

  • Legal force.
  • Security — GOST algorithms.
  • Convenience.
  • Economy — up to 80% savings.

Frequently asked questions

How is QES different from a simple electronic signature?

A simple signature has no legal force. QES is equivalent to a handwritten signature, created with certified CIPF.

Where do I get a QES?

From accredited certification centers: Kaluga Astral, SKB Kontur, Takskom. The list is published by the Ministry of Digital Development.

How much does a QES cost?

From 1,500 to 6,000 rubles per year depending on the center and area of application.

What documents are needed for a QES?

Passport, SNILS, INN, a document confirming authority. For organizations — the charter and an EGRUL extract.

How do I verify a QES?

On the Gosuslugi portal, on the certification center website or via built-in document flow tools.

How long is a QES certificate valid?

Usually 1 year. Renew 1-2 months before expiration.

What to do if the QES token is lost or compromised?

Immediately contact the certification center to revoke the certificate and issue a new one. Notify all counterparties.

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