How do I apply for a social supplement?

At Famiris, we like to make things easy for you. We automatically check if your family is entitled to a social supplement on child benefits. You do not need to apply; this happens automatically.

• Step 1: Checking the cadastral income 
  Every year in January, we check if your cadastral income on January 1 of the previous year was a maximum of €2,000 (non-indexed). If not, you are not entitled to a social supplement.
• Step 2: Checking the taxable family income 
  Is your cadastral income ≤ €2,000? Then we look at your annual gross taxable family income. This must be below a certain income threshold. How we investigate this is explained below.

If you meet the following conditions, we assume that your family income is below the lowest income threshold and you will receive a social supplement:

• Single parent: you receive a guaranteed minimum income from the CPAS or an income replacement benefit for unemployment, illness, or disability for at least 6 months of the calendar year.
• Family with multiple members: you or another family member receives a guaranteed minimum income from the CPAS for at least 6 months of the calendar year.

Famiris investigates this every year between July and December. The supplement is paid retroactively for the months in which your family situation remained the same.

Famiris can also automatically grant the social supplement based on your tax return. We receive this information from the Federal Public Service (FPS) Finance.

You will receive a social supplement if your tax assessment notice shows that your annual gross taxable family income is below a certain income threshold.

If we cannot fully verify your income via the tax assessment notice, you can provide us with proof to show that your income is below the threshold amount. Families who do not live in Belgium receive a questionnaire annually to prove their income.

Note: We temporarily pay the social supplement based on your income declaration. The final check is done two years later, based on the data we receive from the FPS Finance.

Example: The final granting of the social supplement for the year 2025 is based on the tax data we receive in 2027 (tax return in 2026 for the income of 2025).

Contact your case manager or apply for the supplement using the ‘social supplement’ application form.

Which documents do I need to apply for the social supplement?

Always inform us if your situation changes and/or your income exceeds or may exceed the allowed amount. This is important to avoid repayments. 

If Famiris learns that your family, professional, or financial situation has changed, we will request your income again. For example, if a single parent starts cohabiting again or a family member no longer receives a subsistence income. The payments of the social supplement will then be temporarily stopped. Once we know your new income, we will check if you are still entitled to the supplement.