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What you need to know about Digital Certificates in Spain

Updated on
12 Oct 2025
5
min read

A digital certificate is an electronic file that verifies your identity online. In Spain, it is issued by a trusted Certification Authority, with the most common one being the FNMT.

When you use your certificate to sign a document or access a government portal, it confirms two things:

  1. Authenticity: It proves you are who you say you are.
  2. Integrity: It ensures that the information has not been altered after you signed it.

For a freelancer, this digital identity is not just a convenience; it's a necessity for managing your business obligations efficiently and securely.

Why every autónomo needs a digital certificate

While it might seem like another piece of administrative work, getting a digital certificate is one of the most practical steps you can take for your freelance business. It simplifies nearly every interaction you'll have with the Spanish government.

1. File your taxes online (and On Time)

As a freelancer (autónomo), you are required to file quarterly tax returns with the Spanish Tax Agency (Agencia Tributaria or AEAT). These modelos, like Modelo 303 for VAT and Modelo 130 for income tax, must be submitted electronically. A digital certificate is the most direct and secure way to access the AEAT's online portal and complete these submissions. Without it, you would need to rely on third-party services, adding complexity and cost to a routine task.

2. Manage your Social Security

The Social Security system (Seguridad Social) is central to your life as an autónomo. Your digital certificate gives you access to the Sede Electrónica, their online portal. Here, you can:

  • Check your contribution history.
  • Download your Vida Laboral (official work-life report).
  • Update your personal information.
  • Manage your monthly autónomo payments.

Having direct access empowers you to keep your records in order and ensure you are compliant, giving you peace of mind.

3. Access official notifications

Spanish government agencies, including the tax office and social security, are moving away from paper mail. Official notifications are now sent to your secure electronic mailbox, known as the Dirección Electrónica Habilitada única (DEHú).

You are legally required to check this mailbox regularly. Missing a notification can lead to fines and penalties. Your digital certificate is the key to accessing your DEHú and staying on top of important communications.

4. Interact with other administrations

Your digital certificate isn't just for taxes and social security. You can use it to interact with a wide range of public bodies, including your local town hall (ayuntamiento) to register for the padrón or pay local taxes. This centralizes your administrative tasks and saves you countless hours that would otherwise be spent in queues.

How to get your digital certificate remotely

Traditionally, getting a digital certificate involved an in-person appointment to verify your identity. This process could be time-consuming, especially when appointments were scarce. Fortunately, there are now ways to complete the entire process from home.

Software platforms designed for Spanish freelancers are simplifying this crucial step. For example, Facturaz allows you to apply for your digital certificate directly from within the application. The process is designed to be straightforward and fast.

Here’s how it generally works:

  1. Start the Application: You initiate the request through Facturaz.
  2. Guided Onboarding: The platform guides you through the necessary steps, ensuring you provide the correct information.
  3. Document Capture: You'll be asked to upload a photo of your ID (DNI/NIE) and need to complete a verification to confirm your identity.
  4. Receive Your Certificate: Once your identity is verified, the certificate is issued and you can install it on your computer.

This remote process removes a major barrier for new freelancers, turning a complicated task into a simple, guided experience.

If you’re from outside Spain, you might not know the Certificado Digital. It’s Spain’s version of a national digital identity: a secure credential on your computer or phone that you use to log in to government services and sign documents electronically. Here’s how it compares to systems in other EU countries.

  • Germany: nPA (neuer Personalausweis)
  • France: FranceConnect
  • Italy: SPID (credential providers) + CIE (chip ID card with eID)
  • Netherlands: DigiD
  • Austria: ID Austria
  • Portugal: Citizen Card + Chave Móvel Digital + id.gov.pt app
  • Belgium: itsme
  • Poland: e-dowód
  • Luxembourg: LuxTrust

In this guide

Facturaz One

Everything you need as autónomo in one place.
€44
Monthly + IVA