Activate and use Cl@ve Firma (cloud signing)

What you need to have to hand

• DNI o NIE en vigor.
• Móvil con cobertura (and it helps to have the app Cl@ve PIN installed).
• Correo asociado a Cl@ve.
• Contraseña de Cl@ve Permanente (if you already have it). If not, you will create it.
• If you’re registering now: certificado digital o DNIe (for online registration), or carta de invitación (if you requested one), or cita presencial.

Documentation

1. DNI/NIE (and passport if your NIE doesn’t include a photo).
2. Mobile number registered in Cl@ve (that’s where the SMS or notification arrives).
3. Active email address.
4. Carta de invitación de Cl@ve (only if you chose that registration method) with its CSV.
5. Certificado digital or DNIe (only if you do online registration without a carta).
6. Appointment confirmation if you go in person.

Step by step

1. Check your registration in Cl@ve: go to https://clave.gob.es/clave_Home/registro.html and verify you are registered and that your mobile/email are correct.
2. Register if you’re not:
   • Online with certificado/DNIe (fast) from the same portal.
   • With a carta de invitación (it arrives by post, takes a few days) and then complete the registration.
   • In person with an appointment (AEAT, Seguridad Social, etc.). For AEAT: https://sede.agenciatributaria.gob.es/Sede/cita-previa.html.
3. Activate Cl@ve Permanente: on https://clave.gob.es/clave_Home/clave-permanente.html create or recover your password under “Gestión de contraseñas”.
4. Prepare the second factor: install the app Cl@ve PIN (recommended) or make sure you receive SMS on the registered mobile.
5. Sign when required: on the procedure's web (e.g., sede.agenciatributaria.gob.es or importass.seg-social.es), pick Cl@ve → Cl@ve Permanente → Cl@ve Firma, enter your password, validate the one-time code and you’re done.

Time-saving tips

• App Cl@ve PIN beats SMS: notifications usually arrive faster and fail less.
• Update your mobile before signing: if you changed number, fix it in Cl@ve or the OTP won’t reach you.
• Browser: use Chrome or Firefox up to date. On iOS, Safari. You don’t need Autofirma for Cl@ve Firma, but some legacy sites still ask for it in other options.
• Appointments: if you go in person, grab early slots or try different offices (Mondays get booked fast).
• Test on a small procedure before the big submission to confirm your Cl@ve Permanente and OTP work.

Common mistakes that can ruin the process

1. Trying to sign with Cl@ve PIN: it identifies you but does not sign. Activate and use Cl@ve Permanente.
2. Wrong or blocked password: after a few attempts you get locked out. Go to Gestión de contraseñas and reset it.
3. Outdated mobile number: the OTP doesn’t arrive and your session times out. Update data in Cl@ve first.
4. The site doesn’t support Cl@ve Firma: if the option doesn’t appear, it’s not you. You’ll need a local certificate or whatever the procedure requires.
5. Old browser: some pages fail or don’t load the signing step. Update and clear cache before blaming Cl@ve.