Application for Social Security Number in Barakaldo (2026)
Verified on:
Cost
Free
Free process
Time at office
30 minutes at the appointment
Estimated time
Immediate online
Quick summary
How to obtain the Social Security Registration Number (NAF) in Barakaldo. Free process, online or on-site at the General Treasury.
Required documents
-
ID card, NIE or passport
Valid original identity document.
0 €
Free process €0.00
€0.00
€0.00
: 2026
Step by step
- 1
Online Application (Recommended)
Go to official siteAccess with Cl@ve or digital certificate to the Social Security Electronic Office.
!Expert tip
"If you already have Cl@ve, the process is immediate without leaving home."
- 2
In-Person with Prior Appointment
Go to official siteRequest an appointment at the General Treasury of Social Security in Barakaldo.
!Expert tip
"Always bring your ID card or NIE original."
Offices and service points - Barakaldo
General Treasury of Social Security — Barakaldo
Monday to Friday: 09:00 - 14:00
Frequently asked questions
Is the NAF the same as the NIF?
No. The NAF (Registration Number) is exclusive to Social Security and serves for contributions. The NIF is the tax ID number (your DNI or NIE). They are different documents.
When do I need the NAF?
When you start working, if you register as 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.