On 27 October 2026, the Belgian National Social Security Office (ONSS/RSZ) released the official contribution rates and ceilings for the fourth quarter of 2026. This quarterly update is mandatory for all employers and payroll processors to ensure accurate withholding of employee and employer social security contributions. The publication covers standard sectors, specific regimes for artists, maritime workers, and the healthcare sector, reflecting the annual indexation adjustments effective 1 January 2026.
Key Takeaways
- Revised Contribution Ceilings: The maximum taxable earnings ceiling for Q4 2026 has been set at €12,682 per quarter, impacting high-earner calculations for both employer and employee shares.
- Sector-Specific Rate Adjustments: Special regimes including the maritime sector and temporary agency work see distinct rate modifications requiring separate payroll configuration updates before the November payroll run.
Disclaimer: This article is compiled and summarized by the AI based on publicly available information and is for general information purposes only. It does not constitute any form of formal tax advice, legal opinion, or basis for performance. Please consult a qualified professional tax advisor or legal counsel for tax advice.
Source: Read Official Announcement