Read on 2026-10-16. Registration methods can change.
What Cl@ve is
Plataforma ONE says that the Cl@ve digital certificate allows you to identify yourself before the Administration without having to remember different passwords to access different services. It adds that to identify yourself with Cl@ve, it is necessary to register in the system beforehand. It also says that cl@ve PIN is aimed at sporadic accesses, with a password of very limited validity over time. The same page says that cl@ve Permanent is aimed at regular accesses and for use of cloud signature, with a password lasting over time. It adds that any Spanish or foreign citizen with a DNI or NIE can register for Cl@ve for free.
What you need
- A physical identification document (DNI or NIE) with a valid expiration date is needed, and foreign citizens must prove their identity by presenting a passport or travel document issued by the competent authorities of their country of origin.
- The presence of the interested party is always required during registration, even if they are a minor.
Registration steps
Plataforma ONE lists four steps and says that the user accesses the Tax Agency website, selects All procedures, then Other services, and then the Cl@ve Registration section.
It adds that three registration methods are shown: registering in Cl@ve by invitation letter or video call, registering with a certificate or electronic ID, and in-person registration.
It also says that to activate the user in Cl@ve Permanente, the activation code included in the receipt after registering in Cl@ve is required.
The same page says that if you do not keep the activation code, it can be regenerated immediately by accessing Regenerate Cl@ve Permanente activation code within the Cl@ve Registration procedures.
It adds that timelines vary depending on the type of certificate requested, ranging from a few hours to several days, or even weeks if in-person identity verification is required.
You need a NIE first if you are not Spanish. See the NIE guide.
Source
Checked on 2026-10-16 against Plataforma ONE: Application for Cl@ve Digital Certificate. Rules and fees change, so read the official page again before you pay or travel.