Comoros Social Contributions Guide: CNSS EE 4%, ER 8%, Cap KMF 300K 2026
Comoros' social security system (CNSS — Caisse Nationale de Sécurité Sociale) requires contributions from both employees and employers. The employee share is approximately 4% of gross salary, and the employer share is approximately 8%. Contributions are capped at a monthly insurable income ceiling of KMF 300,000. Here is how social contributions work in 2026.
Social security contributions in Comoros fund the public pension system, family benefits, and social welfare programs. The system is administered by the CNSS (Caisse Nationale de Sécurité Sociale). Contributions are mandatory for all employed individuals. The tax year follows the calendar year. Comoros' social contribution rates are relatively low compared to regional peers, reflecting the small formal economy and limited benefit coverage. Personal income tax overview →
Real-world example: An employee with a gross monthly salary of KMF 250,000. Employee deduction: 4% = KMF 10,000. Employer adds: 8% = KMF 20,000. Total contribution: KMF 30,000. For a salary of KMF 500,000, the employee pays 4% on the capped amount of KMF 300,000 = KMF 12,000. The employer pays 8% on KMF 300,000 = KMF 24,000. Earnings above KMF 300,000 are not subject to additional CNSS contributions. Pension system guide →
Contribution Rates 2026
- Employee — CNSS (4%): Funds the state pension scheme and social benefits
- Employer — CNSS (8%): Employer contribution to the social security system
Total combined contribution: approximately 12% of gross salary (up to the KMF 300,000 cap). The cap means that earnings above KMF 300,000 monthly are not subject to additional social contributions. This cap is periodically reviewed. Compared to many African countries, Comoros' total contribution rate of 12% is relatively low (Kenya: EE 5% + ER 5% = 10%; Tanzania: EE 10% + ER 10% = 20%).
Who Must Pay
- Employees: All employed individuals under an employment contract must contribute. Deductions are made by the employer and remitted to the CNSS
- Employers: All registered businesses employing staff must pay employer contributions in addition to remitting employee contributions
- Self-employed: Self-employed individuals may register and pay voluntary social contributions at prescribed rates
Benefits Covered
- Old-age pension: Retirement pension payable from age 60, with at least 15 years of contributions
- Disability pension: For individuals unable to work due to disability
- Survivor's pension: Benefits for dependents of deceased contributors
- Family allowances: Monthly allowances for families with children
- Maternity benefit: Paid maternity leave for eligible female employees
- Work injury: Benefits for work-related injuries and occupational diseases
Compliance and Reporting
Employers must register all employees with the CNSS before work begins. Monthly contribution declarations are filed through the CNSS. The deadline for monthly social contribution payments is typically by the 15th of the following month. Failure to register employees or remit contributions results in penalties, back-payment obligations, and potential legal liability. The CNSS conducts regular inspections and cross-checks payroll data.
Can expatriates opt out of Comorian social security?
Expatriates working in Comoros are generally subject to Comorian social security. However, if Comoros has a social security agreement with the expatriate's home country (primarily France), they may remain covered by their home system. Expatriates from non-treaty countries must contribute to the CNSS.
What happens if an employer fails to pay contributions?
Non-payment or late payment of social contributions incurs interest and penalties. The CNSS and DGI can enforce collection through asset seizure, bank account freezing, and business registration suspension. Directors may be personally liable for unpaid contributions.