Social contributions

What comes off before any tax

Before income tax is worked out, social contributions (cotisations sociales) are taken from the gross pay and paid over to the Centre commun de la sécurité sociale (CCSS). They fund health care, cash sickness benefits, the pension and the long-term-care insurance known as the assurance dépendance. Both sides of the employment relationship contribute: the employee’s share is withheld from the gross and lowers the take-home, while the employer pays a further set of contributions on top of the gross that never appear on your payslip. Only the employee’s share reduces your net pay; the employer’s share is a real cost of employing you and is shown separately as the total employer cost.

The employee’s capped contributions add up to 11,55 % of the gross, with the assurance dépendance adding 1,4 % more on a different base. Every one of the tax- deductible lines also reduces the income-tax base, so they lower your pay twice over in a sense — once as a direct deduction, and once by shrinking the amount the tariff is applied to.

The contributory ceiling — where the percentages stop

The three capped lines — health care, cash benefits and pension — are not charged on an unlimited salary. They stop at the contributory ceiling (plafond cotisable), set at five times the social minimum wage, currently 13 856,63 € a month. Earn above that and your health and pension contributions are frozen at the ceiling amount rather than rising with the extra pay, so a very high earner pays the same contribution euros on the capped lines as someone right at the ceiling. This is the one place the system says “enough” — every other deduction keeps scaling with the salary. The calculator applies the clamp automatically and shows it in the breakdown when your gross crosses the ceiling.

The dependency insurance follows its own rule

The assurance dépendance is the line that behaves differently, and it is easy to get wrong. It is charged at 1,4 %, but on two counts it breaks the pattern above. First, it has no ceiling at all — it is charged on the full salary however high. Second, its base is not the plain gross: a fixed abatement of a quarter of the social minimum wage — currently 692,83 € a month — is subtracted first, so the dependency contribution is charged on the gross minus that allowance. And unlike the other contributions, the dependency line does not reduce your income-tax base; the official withholding tables leave it out of the tax computation entirely. The calculator models it as its own line for exactly this reason.

The pension rate for 2026

The employee pension contribution shown above (8,5 %) reflects a rate raised for 2026 as part of the Luxembourg pension reform: the overall pension contribution went up, split evenly between employee, employer and the State. Because the reform is recent, this is one of the figures we re-check against the primary gazette rather than treat as settled — the value here is still awaiting reviewer sign-off.

What the employer carries on top

Beyond matching the employee on the shared lines, the employer pays contributions that never touch your net pay: the accident insurance (0,65 %, adjusted by an employer-specific bonus-malus factor), occupational health (0,14 %) and the mutual insurance (0,23 %, which varies by risk class). These are why a job costs an employer more than the gross figure on your contract. The calculator surfaces them as the total employer cost — a separate row, never deducted from your net — so you can see the whole picture: what the employer spends, what you are paid gross, and what actually reaches your account.

The rates on this page are the ones in force for 2026, taken from named primary sources, but they have not been through this site’s own review and sign-off — for official amounts, check with your employer or the CCSS.

The full content of this page is still in preparation and subject to review.