How to obtain a Social Security Number in Santander (2026)
Verified on:
Cost
Free
Free process
Time at office
30 minutes at the appointment
Estimated time
Immediate online
Quick summary
Instructions on how to get your Social Security Registration Number (NAF) in Santander. Free process, online or in person at the Treasury General.
Required documents
-
DNI, NIE or passport
Valid original identity document.
0 €
Free process €0.00
€0.00
€0.00
: 2026
Step by step
- 1
Online procedure (recommended)
Go to official siteLog in with Cl@ve or digital certificate to the Social Security Electronic Office.
!Expert tip
"If you already have Cl@ve, the process is immediate from home."
- 2
In person with prior appointment
Go to official siteBook an appointment at the Treasury General of Social Security in Santander.
!Expert tip
"Always bring your DNI or NIE original document."
Offices and service points - Santander
General Treasury of Social Security — Santander
Monday to Friday: 09:00 - 14:00
Frequently asked questions
Is the NAF the same as the NIF?
No. The NAF (Social Security Registration Number) is specific to Social Security and used for contributions. The NIF is your tax identification number (your DNI or NIE). They are different documents.
When do I need a NAF?
When you start working, when you become self-employed, or when you need to access Social Security benefits.
Official sources and useful links
This guide is for informational purposes only. Always check the official source for current information.