Starting out as self-employed in Belgium: contributions, status, pension

The first 5 steps for the newly self-employed

Registering as self-employed in Belgium takes five steps, in order, and can be done in 2-3 weeks:

1. Register with the CBE (Crossroads Bank for Enterprises) through an approved business one-stop shop (Acerta, Securex, Partena, Liantis, UCM): cost ~€95.
2. Get a VAT number if your activity is subject to VAT (almost all services, apart from specific exempt cases).
3. Join a social insurance fund within 90 days of starting (generally the same organisations as for the CBE).
4. Join a health insurance fund (mutuality) (your choice of fund, but membership is compulsory for sickness and invalidity insurance) and look into a PLCI once your income stabilises.
5. Open a separate business bank account: not compulsory when working in your own name, but strongly recommended to keep your accounts clear.

NISSE contributions: how they work in the first 4 quarters

NISSE contributions are provisional when you start out: your fund calculates them on a minimum deemed income (~€17,374 in 2026, pending official publication) until your actual income is known (adjustment in year N+2). That works out at around €850/quarter, or ~€3,400/year.

If you earn more than the deemed income, the NISSE will bill you for the difference in an adjustment two years later, often €4,000 to €8,000 in arrears for a newly self-employed person who got off to a strong start. To avoid this trap: voluntarily ask to pay on a higher estimated income from the first year, or set aside 25-30% of your net income every month.

The start-up reduction: who qualifies and how much?

The start-up ('primo-starter') reduction allows people starting out who have never been self-employed as a main occupation in Belgium to pay reduced social security contributions for the first 4 full quarters, subject to income conditions (typically < ~€7,770/year).

The start-up reduction can be combined with other regional support (Walloon digital vouchers, Bruxelles Formation grants, FOREM, VDAB, Hub.brussels and 1819 support). Ask your business one-stop shop to check your eligibility before your first NISSE bill.

When should you think about the PLCI and income protection?

PLCI: often best left until year 2, once your income has stabilised. Signing up too early at a level you cannot sustain exposes you to switching costs. Exception: young medical professionals (doctors, physiotherapists, dentists, pharmacists) can open a social PLCI as soon as they join the NIHDI (INAMI) agreement, which funds most of the premium (see the doctor profile).

Income protection: worth looking into from year 1 if you are the sole earner (family, mortgage). In the event of incapacity for work, the NISSE pays a capped benefit (~€1,850/month in 2026 for a case with dependants), often not enough to maintain your standard of living. Additional cover at 70-80% of monthly income typically costs €50-150 a month for a young profile.

See the PLCI guide and the income protection guide.

Mistakes to avoid in your first year

• Not setting money aside for NISSE contributions and facing a huge N+2 adjustment.
• Mixing business and personal accounts: it makes bookkeeping and your personal income tax return a headache.
• Setting up an SRL/BV too early (below €60-80k of net income): fixed costs that cancel out the tax advantage.
• Forgetting advance tax payments: without them, a statutory surcharge of ~6% is added to your personal income tax.
• Not taking out minimum income protection when you have dependants or a mortgage.

Action plan for the first 12 months

1. Month 1: CBE registration + VAT number + joining a social insurance fund + business bank account + health insurance fund.
2. Months 2-3: choose an ITAA-registered accountant, set up an invoicing tool (Indy, Accountable, Yuki, Sage). Check whether you qualify for the start-up reduction.
3. Months 4-6: start setting aside 25-30% of net income for NISSE contributions + personal income tax. Look into income protection.
4. Months 7-9: first advance tax payment (10 October).
5. Months 10-12: review your accounts, assess your income trajectory and prepare a possible PLCI for year 2.