Cl@ve: register and add an extra digital method (PIN, Cl@ve Permanente and app)

What you need to have to hand

• DNI or TIE con NIE in force.
• Mobile with an active line (preferably national) and able to install the Cl@ve PIN app.
• Email you actually use.
• Certificado digital FNMT or DNIe if you want instant registration without the carta.
• Cita previa if you plan to register in person.

Documentation

1. DNI (for Spanish nationals) or TIE/NIE (for foreigners). Without this you can't start.
2. Mobile to associate (you'll get an SMS or use the app). Avoid company phones if you don't control the line.
3. Email for notifications and recovery.
4. Certificado FNMT or DNIe to register/raise your level remotely (optional but recommended).
5. Carta de invitación Cl@ve if you prefer that route (it arrives at your domicilio fiscal/padrón).
6. Cita presencial (AEAT or Seguridad Social) if you choose to register at an office.

Step by step

1. Quick registration with certificado/DNIe: go to https://clave.gob.es > Registro and choose to register with certificado digital or DNIe. Accept the data, confirm and you're registered instantly.
2. No certificado: carta or appointment: if you don't have a certificado, at https://sede.agenciatributaria.gob.es search for "Registro Cl@ve" and request the carta de invitación or a cita presencial for registro.
3. In-person registration: bring your DNI/TIE to the appointment (AEAT/Seguridad Social). They'll validate your identity and activate Cl@ve on the spot.
4. Link your phone and the app: install Cl@ve PIN (AAPP) and link it from clave.gob.es (it will show a QR or send an SMS). Check notifications work.
5. Activate Cl@ve Permanente: on clave.gob.es, go to Gestión de Cl@ve Permanente and create your password. It will ask for a one-time code (PIN/app) to confirm.
6. Additional methods: add another phone or verify your email in Cl@ve data management. That avoids being locked out if you lose the main phone.
7. Optional: Certificado FNMT: if you want the universal fallback, get your certificate at https://www.sede.fnmt.gob.es/certificados/persona-fisica/obtener-certificado-software. Stronger registration and raises your level without visiting an office.

Time-saving tips

• Use certificado or DNIe for registration: it's instant and saves you the carta and appointment.
• Appointments: try first thing in the morning and Mondays at 08:00. If AEAT is full, try Seguridad Social.
• App over SMS: the Cl@ve PIN app is usually more reliable than SMS, especially with foreign numbers.
• Backup phone: add a second number if you can. You'll thank yourself when you lose the main device.
• Keep your domicilio fiscal updated: if you go by carta and the address is wrong, you'll hit a delay. Update it first.

Common mistakes that will mess you up

1. Trying to register with a passport: it won't work. You need DNI or NIE.
2. Using someone else's mobile: if that number is already in Cl@ve, you'll get confused. Use a number you control.
3. Changing number without updating Cl@ve: you'll lose codes and access. Update before switching.
4. Assuming PIN works for everything: for serious signatures they'll ask for Cl@ve Permanente or a certificado.
5. Requesting the carta to an old address: it won't arrive, the code will expire and you'll start over.
6. Not installing the app: relying only on SMS can fail at the worst moment. The app performs better.