How to apply for an SSIN number in Belgium

SSIN, INSZ, NISS, INSS – all these abbreviations stand for your Social Security Identification Number in Belgium, in different languages.

If you are planning to work in Belgium, you are required to get a SSIN number – your Belgian identification number.

It’s a rather simple process involving 4 steps, but the application must be submitted by your employer, prior to your starting date.

Your employer can submit your application online.

Documents

• passport
• or ID card
• or driver’s license.

It is important that the quality of these copies is sufficiently high.

Identification

• Name
• Name
• Date of birth
• Country of birth
• Place of birth
• Nationality
• Gender

Address

• Your address back at your home country
• Your address in Belgium

Submit

You immediately receive the unique Belgian identification number.

Or the processing takes a while and additional research and/or information is needed to be able to assess your application; in this case your employer will be kept informed by e-mail.

Note

Belgians call their national identification number INSZ (“identificatienummer van de sociale zekerheid) in Dutch.

In French it’s NISS (“No. d’identification de Sécurité Sociale”).

In German it’s INSS (“Identifizierungsnummer der Sozialen Sicherheit”).

We use the English abbreviation SSIN (“Social Security Identification Number”), though some sources also speak about INSS (“Identification Number Social Security”).

At Wanted, we support our employees during the entire relocation process. In addition to legal documents, we also arrange flights and book the accommodation for you.

Send us your CV to [email protected] and join our team!

If you’re open to working in the Netherlands, check this article about the documentation process.

Helmiina Bakker

Backoffice Support