Becoming affiliated with the Overseas Social Security as a self-employed person

Is your independent activity based in Belgium, but also outside the European Economic Area, Switzerland or the United Kingdom (hereinafter referred to as “abroad”)? In that case, please read on.

An independent activity in Belgium and abroad

The same activity in Belgium and abroad

If your activities are the same in both places, your activity in Belgium cannot remain a main activity. The activity in Belgium must be discontinued or converted into an independent activity as a secondary occupation, with the permission of the NISSE. After receiving a certificate stating the end date of the main activity, we will process your affiliation file.

A different activity in Belgium than abroad

If your activities in both places are different, you are entitled to join the OSS if you meet the participation conditions (including a significant activity abroad).

Other situations

If you are currently self-employed outside Belgium and wish to start an independent activity abroad (or start working there as an employee), please contact us in writing and provide us with a detailed description of your situation. Our service will then examine whether joining our scheme is possible or not.