🇧🇪 Payroll in
Belgium
Everything employers need to run compliant payroll in Belgium — contributions, deductions, payslip rules, and filing obligations.
Running Payroll in Belgium — Step by Step
Register for payroll
Before making any salary payment in Belgium, you must register with the relevant tax authority and obtain an employer registration number.
Determine payroll frequency
Belgium has statutory requirements around how often employees must be paid. Your employment contracts must state the agreed pay cycle.
Calculate gross pay and deductions
Gross pay must meet the statutory minimum wage. Deductions include income tax withheld at source and employee social security contributions.
Calculate employer contributions
Employers in Belgium must pay employer-side social security contributions on top of gross salary.
Issue compliant payslips
Every employee must receive a payslip on or before each pay date showing gross pay, all deductions, employer contributions, and net pay.
File and remit on time
Payroll taxes and social security contributions must be filed and remitted to Belgium authorities on time. Late payment penalties can be significant.
Payslip Requirements — Belgium
Statutory payslip obligations for employers in Belgium.
Format
Paper or Electronic
Delivery
Same day as pay
Retention
5 years
Digital Valid
Yes
Required Payslip Items
- ✓Employee name
- ✓Employee NISS/INSZ number
- ✓Employer name and ONSS number
- ✓Pay period
- ✓Gross salary
- ✓Individual deductions (ONSS employee, withholding tax)
- ✓Net salary
- ✓Holiday pay accrual
- ✓Meal vouchers (if applicable)
- ✓13th month accrual
- ✓Function classification
- ✓Working regime (full/part time)
Payslips must be issued on or before pay day. Language must match the regional language of the workplace (Dutch in Flanders, French in Wallonia, German in Eastern Belgium). Electronic payslips are accepted if the employee agrees. Retention: employer must keep 5 years; employee copy must be provided on request.
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This guide is for informational purposes only and does not constitute legal or tax advice. Always consult a qualified local payroll specialist.
About This Guide
- ✓ Sourced from official government publications
- ✓ Updated monthly — always current rules
- ✓ For guidance only — not legal advice
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