Digital Certificate – A How to Guide

The Digital Certificate or Certificado Digital in Spanish, is an electronic ID that enables you to manage a wide range of administrative processes from your own computer. The Digital Certificate is needed not only to register as Autónomo (self-employed), but also to register your documents when applying for your TIE, making tax declarations and joining the Social Security system, among other things.

You download it onto your computer, mobile phone or tablet, which you can then use to receive notifications, make tax payments etc. in a secure way. You can also share it with your appointed representative, such as your accountant, in order to make transactions on your behalf. This should be done using official authorisation procedures. Avoid sharing your certificate file unless you fully trust the person and understand the risks.

This guide is designed to help you manage the process step by step.

The certificate lasts for four years and the first renewal can be made online here. 

It must be renewed within 60 days before expiry.

Depending on how you renew (online, app, or in person), you may be asked to verify your identity again.

*You need a NIE (Foreigners Identity number) to apply for a Digital Certificate. (See other guides below)

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How to obtain the Digital Certificate?

You can check with your local Ayuntamiento to see if they offer a Digital Certificate service. This is the most straightforward approach if they do. Simply attend the appointment with your proof of identity and your smartphone and they will complete the application for you and send you email instructions for downloading the certificate to your PC when you return home. It is usually immediate.

Alternatively, you can apply in two ways:

  1. Using the official FNMT mobile app
  2. Using a computer (software certificate)
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Download the Official Mobile FNMT App for Digital Certificate

There is an official “Certificado Digital FNMT” app available in official app stores. This is provided by the Spanish Royal Mint (FNMT).
  1. Apply Using the App
    • Open the app and choose “Solicitar Certificado Digital.”
    • You can use features like video‑identification or, if you have an electronic identity card (DNIe) with the correct certificates, you may use NFC (Near Field Communication) to read it on your phone.
    • The app allows you to complete much of the process without needing to go in person. Video identification lets you prove your identity remotely, and if accepted you will receive the code and link to download your certificate directly on the mobile device.
  2. Identity Verification
    • Depending on your situation and the app options available at the time, you may still need to verify your identity either by video call or in person at an accredited office (e.g., AEAT or FNMT office) if video verification isn’t accepted. Use this link for a map of available offices.
  3. Download and Install Your Certificate
    • Once your identity is verified and you receive the email with a link and code, you can download the certificate directly through the app to your phone.
From there you can export it to other devices (computer, tablet) by saving the certificate with a password and installing it via email or USB.

Using a computer (software certificate):

  1. Download the Software The FNMT (Spanish Royal Mint) provides software that enables you to use any browser on your device. You have to select and download the appropriate browser software depending on which system you are using (Windows, MacOS or Linux). Download it from this website.
The FNMT (Spanish Royal Mint) provides software that enables you to use any browser on your device. You have to select and download the appropriate browser software depending on which system you are using (Windows, MacOS or Linux). Download it from this website.

After downloading the software, follow the installation process. Once installed, the software activates automatically.

2. Applying for the Digital Certificate

You can apply for a Software Certificate from the Sede Electrónica website. On the site, click on the link “SOLICITAR EL CERTIFICADO” as shown in the image below.

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After clicking, a new page will open showing a form asking for your details. You need to fill in the following personal information:

  • Nº del documento de identificación: your NIE.
  • Primer Apellido: your first surname.
  • Correo electrónico: the email address you wish to use for this process.

After filling in your information, DO NOT PRESS “ENVIAR PETICIÓN”. Instead, press the link below “Pulse aquí para consultar y aceptar las condiciones de expedición del certificado“. You will see the terms of use and privacy policy of your Digital Certificate.

 

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Accept the privacy policy by clicking their designated link, and after that select “Enviar petición” to send your application. You will then see a pop-up on the top of your screen, which is the software you previously installed. You have to select “Abrir”.

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Another pop-up will appear on your screen, requiring you to write down a password for your Digital Certificate. Write down a password you are sure you will remember. Then press “Aceptar”.

 

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After sending your application, you will receive an email with a link and an application code attached to it. You will need to go in person to one of the FNMT or Tax Agency offices to confirm your identity. You can find the office locator here (*Tax Agency offices will require an appointment).

After registering your identity, you will receive an email with the same application code and a link to download your Digital Certificate. On the website accessed through the link, input your NIE, name and the code, and then accept again the privacy policy.

After completing the steps detailed above, you will be able to download your Digital Certificate to your computer and install it into your browser by pressing the option Instalar Certificado that will appear on your screen.

3. Sending your Digital Certificate to other devices. To install your Digital Certificate to other devices, you can download it from your browser by accessing the “Certificates” section in your options menu. You can then save it with a password and send it via email to another device. You will need to enter the password you decided on the newer device, or otherwise you won’t be able to install it.

Important Security Advice

  • Never send your Digital Certificate or password to anyone you do not fully trust.

  • Store your password somewhere safe. If you lose it, the certificate cannot be recovered.

  • If you believe your certificate has been compromised, revoke it immediately via the FNMT website.