Electronic signing of documents

You can submit to KAS authorities (National Revenue Administration) the following documents through PUESC:

Through PUESC, you will submit documents to KAS authorities:

signed with a qualified electronic signature, a trusted signature placed using the trusted profile or an advanced electronic signature verified with a customs certificate,
confirmed with an amount of revenue for the previous year (check in the description of a specific service whether the document you want to submit via PUESC allows such option).

PUESC enables you receiving the documents in an electronic form bearing an electronic signature or seal from the KAS authorities. You can check the current status of the advanced electronic signatures and electronic seal verified with a customs certificate, a qualified certificate, trusted signatures and personal signatures in the “Verify the electronic signature” service.

A customs certificate is free of charge. As a certificate holder, you can sign and protect the integrity of documents sent through PUESC. You can use the CertSign program to place an electronic signature verified with a customs certificate.

Download the CertSign program and sign documents with a customs signature

A customs signature is an advanced electronic signature, which is verified with a customs certificate. You can generate a dedicated customs certificate by your own on PUESC.

If you want to sign documents with a customs signature on PUESC:

Create an account with extended scope of rights on PUESC.
Install the CertSign application on your computer.

Before installing the CertSign Program, check whether you use a 32- or 64-bit version of Windows (press Start, Settings, System, Information in the menu).

At the first start, the CertSign application installs the necessary certificates of the Ministry of Finance Certification Center (CCK MF) in Windows. The certificates installed automatically in Windows are available for Chrome and Edge browsers.

If you need to install the certificates manually, you can read about it in the Operating instruction for obtaining a customs certificate and signing a document with an electronic signature - pdf file (3.67 MB).

Generate and save your customs certificate:
1. Log in to PUESC and go to My desktop | My data | LIST OF CUSTOM CERTIFICATES.
2. Select the Generate a customs certificate button.
3. Read the Terms of Service and confirm the statements.
4. Enable running the CertSign application, if you have not run it yet.
5. Choose the location to save the keys and certificate.

If you don’t have a secure cryptographic card, you can use the program solutions, for example the system store (CSP) in Windows.

Enter the password protecting the key and confirm it. The password should be composed of at least 12 characters, including both an uppercase and lowercase letter, a digit and a special character.
Remember this password!

Note! If you forget your password, it cannot be recovered. You must generate a new key and customs certificate with a new password.

Now you can sign the documents with a customs signature:
1. Log in to PUESC.
2. Go to My desktop| To send and drafts | Documents to send
3. Select the document and click the Sign button.
4. Choose the appropriate form of signature for the selected document in the pane.
  1. Selecting the customs certificate will run the signing procedure in the CertSign application.
  2. Follow the instructions displayed on screen.

Note! If you have any problems with signing the document, first of all change the browser and try again.

You are obliged to duly protect the cryptographic data that you use to identify yourself in contacts with KAS. In the case of revealing or suspected revealing of a private key, you should immediately suspend or revoke the existing customs certificate by sending a request via SISC Help Desk.

Instructions:

Instrukcja użytkownika CertSign PL - pdf file (3,67 MB)

Instruction for obtaining a customs certificate and signing a document with an electronic signature EN - pdf file (5,54 MB)