Start Your Own Business in Belgium
Self-employment is the starting point. When you are ready to protect your personal assets, bring on partners, or unlock tax advantages, it may be time to form a company in Belgium.
HustleHub AI provides general information only, not tax, legal, or financial advice. Belgian tax and business rules may differ between regions (Flanders, Wallonia, Brussels). Always check official guidance from SPF Finances or INASTI/RSVZ, or speak to a qualified comptable or boekhouder.
From side hustle to business owner
Many successful businesses start as side hustles. The typical progression in Belgium:
Indépendant complémentaire
Self-employed as a side activity alongside employment. Lower social contributions. Test your idea with less risk.
Indépendant à titre principal
Self-employed as your main activity. Full social contributions. IPP income tax.
SRL/BV
Private limited company. Separate legal entity. Limited liability. ISOC corporate tax.
Not everyone needs to progress to step 3. Many self-employed people stay that way permanently and do very well.
Business structures compared
| Feature | Indépendant (personne physique) | SRL/BV | SA/NV |
|---|---|---|---|
| Setup | Guichet d'entreprise (~€100-€200) | Notary + publication (~€1,500-€3,000) | Notary + publication (~€3,000-€6,000) |
| Minimum capital | None | No minimum (since 2019 reform), but adequate equity required | €61,500 |
| Liability | Personal (unlimited) | Limited to company assets | Limited to company assets |
| Tax | IPP 25-50% + municipal surcharge | ISOC 25% (20% on first €100K for SMEs) | ISOC 25% |
| Admin | Bookkeeping + annual IPP return | Full accounting + annual accounts + publication | Full accounting + annual accounts + audit + publication |
| Best for | Solo operators, testing ideas | Small-medium businesses, liability protection | Large companies with shareholders |
This is a simplified comparison. The right structure depends on your income, risk, and growth plans. Always consult a qualified professional.
When to stay solo vs form a company
Stay self-employed when...
- Your income is modest and IPP rate is acceptable
- You want simple administration
- You are testing a business concept
- You work as indépendant complémentaire
Consider an SRL/BV when...
- Your income is high enough that ISOC 20%/25% is more efficient than IPP rates
- You want personal liability protection
- You want to bring in partners or investors
- Clients or contracts require a company structure
How to form a company in Belgium
- Draft a financial plan (plan financier — mandatory since 2019 reform)
- Choose a company name and check availability
- Draft statutes (statuts/statuten)
- Open a bank account and deposit capital (if any)
- Execute the incorporation deed before a notary (notaire/notaris)
- Publish in the Moniteur Belge / Belgisch Staatsblad
- Register at BCE/KBO via a guichet d'entreprise
- Activate TVA/BTW
- Register with a social insurance fund
- Set up full double-entry accounting
Belgium reformed its company law in 2019, eliminating the minimum capital requirement for SRL/BV companies. However, founders must prepare a financial plan (plan financier) demonstrating adequate equity for the planned activities. Belgium's indépendant complémentaire system is particularly attractive for testing a business idea alongside employment — you maintain full social protection through your employer while building your venture.
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HustleHub AI provides general information only, not tax, legal, or financial advice. Belgian tax and business rules may differ between regions (Flanders, Wallonia, Brussels). Always check official guidance from SPF Finances or INASTI/RSVZ, or speak to a qualified comptable or boekhouder.