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Social Security number (NUSS)
Online verifiedNúmero de la Seguridad Social (NUSS)
Who needs it
Anyone starting work, registering as autónomo, or accessing the public health system.
When needed
Before signing a work contract, before alta RETA, or before requesting the tarjeta sanitaria.
Where to get it
TesorerÃa General de la Seguridad Social (TGSS) office or online with a digital certificate.
Timeline
20–30 minutes at the counter. NUSS issued the same day or within a few days.
Faster with Key4SpainCita previa
Yes, mandatory for in-person.
What to bring
- •Passport or NIE / TIE
- •Filled TA.1 form
- •Employer paperwork if assigned by the company
Common mistakes
- âš Going without a booked appointment
- âš Wrong TA form
- âš Confusing NUSS with the affiliation number after alta
What to say at the counter
I would like to request my Social Security number (NUSS). (Buenos dÃas. Necesito solicitar el número de la Seguridad Social.)
Key4Spain service
Handling this via Key4Spain ensures 0% margin for error.