How to check an already issued tax certificate

You can check a tax certificate using the "Document verification using a secure verification code" service, which you will find in the highlighted block "Notifications and document verification".

All certificates issued, regardless of the method of request, will have a verification code so that the recipient can verify their authenticity and validity.

This option cannot be used until the certification has been issued.

This comparison is useful if you have received the certification by regular mail, email or via another means other than our website.