Print your RFC and obtain an official certificate

Printing a calculated key does not produce a SAT certificate. If you are asked for a tax document, check exactly which document is needed.

Confirm your key first

Look up your registered RFC with SAT or check a certificate you already have. Do not use an estimated calculator result as proof of registration.

Get the document through official channels

Go to the SAT portal and find the service for generating a Constancia de Situación Fiscal. Access requirements depend on the channel you choose. Follow the current instructions and save the document issued by the authority.

Before sharing the certificate

Check that the recipient actually needs the document. It may contain personal and tax information. Do not publish it or send your password or e.firma files to someone offering to print it.