Autónomo.eusthe independent guide, home

Social Security

The Social Security number, the monthly fee and the self-employed scheme. The steps are in Part C.

Open this part of the guide: Part C: Become an autónomo

  1. What is a NUSS?

    The NUSS is the number Social Security uses to identify you. Import@ss also calls it the NAF. Asking for it is not the autónomo alta.

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  2. Are NUSS, NSS and NAF the same number?

    Import@ss says the NUSS is also called the NAF. The pages checked do not describe NSS as a third number.

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  3. What is modelo TA.1?

    Modelo TA.1 is Social Security's form for affiliation, a Social Security number, or a change of data. It is not the autónomo alta.

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  4. What is modelo TA.0521?

    TA.0521 is not on Social Security's current worker-forms list. The self-employed alta is the Import@ss service Alta en trabajo autónomo.

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