Applies to: Spain-wide digital identification; not every portal accepts every Cl@ve method.
Before you start
- DNI/NIE and supporting details requested by the registration service.
- A personal mobile number and email you control.
- An electronic certificate, appointment or invitation letter for your chosen method.
The steps
Open the official registration page
Compare the currently offered in-person, certificate and remote options. Availability can depend on the identity document and verification route.
Check basic versus advanced
A basic registration can leave higher-security services unavailable. If the procedure needs advanced access, select an eligible verification method.
Register your own contact details
Complete the identity checks and confirm the telephone number. Do not use your adviser’s phone simply because they are filling in the form.
Finish the activation
Follow the instructions supplied after registration and keep the activation information securely. Registration is not complete just because you started a request.
Try the actual service
Test the intended tax or government portal well before filing day. If signing requires a certificate or other software, arrange that separately.
Important details
Cl@ve and FNMT
They are different ways to identify yourself. Having one does not mean every service will accept it for every action.
Maintenance
Keep your registered phone current. Never approve an authentication request you did not initiate.
See the bigger picture
Pair these practical steps with the Spain-wide essentials.
Sources & next steps
Reviewed 30 September 2026. This independent guide provides general information. Requirements, fees and office arrangements can change; the responsible authority’s current instructions control your application. Commercial service links explain products, not official rules.