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How to pay for I.CA?

Make it easy to fill in the payment order for I.CA with a smartphone. Take advantage of QR Payments in your mobile banking application. The QR code for payment is always on a specific invoice.

QR payment

You can enter a payment order personally in your bank or via e-banking on your account:

  • 17864658/0300 - payments for primary and subsequent certificates (such as Variable symbol please state the number of proforma invoice)

Payment is credited to the payee's account usually on the second business day of receipt of the payment order by the bank. The issue of the subsequent certificate will take place immediately after the payment has been credited to the I.CA.

Bank transfer

If you want to pay your invoice as soon as possible, you can visit the registration authority at our headquarters (Podvinný mlýn 2178/6, Prague 9) where you will be able to pay in cash or by credit card. There is no handling charge for this service.

Payment in cash

How to speed up the issue of a certificate renewal?

If you are in a hurry to issue a subsequent certificate, you can send a copy of the proof of payment to, contact us at tel. +420 284 081 940.

How do I change my billing information?

If you have changed the billing information which you filled in previous certificate request, you can edit them through the Personal Certificate Management service, which can be found on our website.

You can also send an email with your request to to change your billing information. Do not forget to attach your serial number to your e-mail, or variable invoice proforma symbol or final invoice sent to you by e-mail.

Registration authorities



8/28/2019 Swedish partnership
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7/16/2019 I.CA starts issuing certificates using elliptic curve cryptography (ECC)
More here
3/27/2019 I.CA became a member of the OBE QTSP Working Group
More here