The old one FAITHFULnow known as e.signatureis a type of advanced electronic signature that is used to carry out procedures and services before the Government of Mexico, especially in the Service tax administration (SAT).
If you are a natural or legal person and need to submit monthly or annual returns, reprint RFC acknowledgments or reprint proof of your tax situation, it is essential that your e.firma is current. The lack of this tool can represent an obstacle to perform operations quickly and efficiently.
It is essential to carry out tax procedures online in Mexico, since it allows you to verify your identity digitally before the SAT. The validity of the FIEL or e.Signature is four years, so it is important to renew it before it expires. If you don’t, the file expires and is no longer useful for any functionality on the platform.
How to verify the validity of your e.firma
If you have doubts about the validity of your electronic signature, you can go to the SAT website in the Identification and electronic signature section to verify its status. Remember that the maximum validity of the Certificate of your e.firma is four years, in accordance with the Fiscal Code of the Federation.
If your e.firma has expired, it is important that you renew it as soon as possible. The renewal can be done at any time at the SAT offices, and it is a simple procedure that will allow you to continue using this tool safely and efficiently.
How to renew your FIEL or e.Signature for your online tax procedures
Why is it important to have a FIEL or e.firma?
The FIEL or e.firma renewal process is simple, but you need to follow the steps carefully to avoid mistakes.
Next, we explain the steps you must follow:
Step 1: Access the SAT portal
Enter the portal and select the option “Renewal of e.firma”. Follow the steps to complete your procedure and upload the file with your scanned INE or IFE. Record a short video starting the recording, reading the sentence that will appear on the screen and, finally, signing the application.
Step 2: Download the Certifica program
Once the SAT confirmation email is received, it is necessary to download the “Certifica” program from You must install the program on your computer and run it. Select the option “Electronic Signature Renewal Requirement” and enter your RFC and personal email. Set the password for your new FIELD and save the application files.
It may interest you: What official procedures can be carried out in the SAT?
Step 3: Renew your certificate with SAT ID
Enter the link and select the option “Certificate renewal with SAT ID”. Load the file with the ending “.Req” (the one you generated in step 2) and send the request.
Once sent, you must wait between 5 and 10 business days to receive a confirmation email from the SAT with the specifications to continue with your process. Follow the steps indicated to complete the renewal of your FIEL or e.firma.
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