What is Cl@ve PIN and how do you use it for Modelo 210?

Cl@ve is the state platform regulated by Orden HAP/2194/2013 and aligned with Ley 39/2015 del Procedimiento Administrativo Común. It allows any citizen (resident or not) to identify themselves before the Spanish administrations using a single method. It comes in three flavours: digital certificate or DNIe (the classic method), Cl@ve PIN (a temporary PIN received on your phone each time you log in), and Cl@ve permanente (username + password for longer sessions). For non-residents the most practical options are usually Cl@ve PIN or the newer Cl@ve Móvil (official app replacing the SMS step).

To register you have three routes: in person at an AEAT or social-security office (PIN issued on the spot, active immediately); via video identification from the AEAT website with NIE + passport; or via an invitation letter the AEAT mails to your tax address with an activation code. Video identification is generally the most useful for non-residents — no trip needed and active within 24-48 hours.

To file Modelo 210 you go to the AEAT e-Office, select "presentación con Cl@ve", enter your NIE/NIF and the system sends a 3-digit PIN to your phone or to the Cl@ve app. You concatenate that PIN with the password you chose at registration and access the form. The system signs and registers the filing; you get a downloadable PDF acknowledgement. Important: Cl@ve PIN has a per-session validity (one PIN, one session); if you want to log in repeatedly without waiting for SMS each time, the Cl@ve Móvil app is the better choice.

Alternatively you can use an FNMT digital certificate or a DNIe + card reader. The FNMT certificate is free but involves a technical install-and-export process that many non-residents find tricky. Cl@ve PIN skips that technical step but ties you to the phone number where the PIN arrives; if you change number you must update it in Cl@ve (otherwise you lock yourself out).