Payment of social contributions for employees

Any person engaging in a professional activity must, in principle, be registered with the social security services in order to benefit from social security coverage in the event of illness, unemployment, occupational accidents, pension, etc.

To this end, all employers must submit a monthly declaration of the gross salaries paid to their employees, and the exact number of hours worked, to the Joint Social Security Centre (Centre commun de la sécurité sociale - CCSS).

Every month, based on these salaries, the CCSS calculates the amount of social contributions due for each employee, and informs the employer of the total amount of social contributions to be paid. This amount includes both the employees' share of the social contributions and the employer's share of the social contributions.

The social contributions owed by employees are directly deducted from their wages by the employer, who is responsible for paying the entire social-contributions bill in settlement of the monthly invoice received from the CCSS.

Who is concerned

The following are involved in the payment of social contributions:

  • the employer, who must pay social contributions to the CCSS;
  • if applicable, payroll experts (fiduciaries, etc.) appointed by the employer.


When social contributions are paid, it is assumed that:

How to proceed

Applicable contribution rates

The CCSS informs the employer, by post, of the applicable rates and of any changes.

Distribution of the contributions burden between the employer and employee

When calculating the employee's salary, the employer withholds the employee's share of the contributions from their gross monthly salary.

Distribution of contributions burden between employer and employee


Employee's share

Employer's share

Health insurance (as at 1 November 2015)

  • Benefits in cash: 0.25 %

  • Benefits in kind: 2.80 %
  • Benefits in cash: 0.25 %

  • Benefits in kind: 2.80 %

Pension insurance

8.00 %

8.00 %

Long-term care insurance

1.40 %


Accident insurance


0.90 %

Occupational health (STM)


0.11 %

Mutual insurance scheme


depends on the contribution class to which the business belongs

The monthly contribution base cannot be less than the social minimum wage for non-qualified workers aged 18 and over or, where applicable, than the social minimum wage applicable to adolescent workers.

In principle, the monthly contribution base cannot be more than 5 times the social minimum wage for non-qualified workers aged 18 and over.

Accident insurance

The CCSS automatically informs the Accident Insurance Association (Association d'assurance accident - AAA) whenever a new employer registers with the social security.

Accident insurance contributions are borne entirely by the employer.

Employers' mutual insurance scheme

All businesses must join the Employers' mutual insurance scheme (Mutualité des employeurs - MDE). This mutual insurance scheme is largely financed by a contribution borne by employers. MDE registrations are managed by the CCSS, which also collects MDE contributions.

Businesses are divided into 4 contribution classes based on the 'financial absenteeism' rate among their employees during the previous year.

Calculation of the financial absenteeism rate
Financial absenteeism rate =

Amounts reimbursed to a business for cases of incapacity to work
(of employees and self-employed workers)


Contribution base
(for employees and self-employed workers)

The following are not taken into account in the calculation:

  • incapacity to work due to illness during the trial period, up to a maximum of 3 months;
  • incapacity to work due to accidents in the workplace or occupational illness;
  • absences for maternity or adoption leave;
  • absences for leave for family reasons;
  • absences for family hospice-care leave.
Employers' mutual insurance scheme classes and contribution rates

Contribution class

Absenteeism rate

Contribution rate

Class I

< 0.65 %

0.46 %

Class II

< 1.60 %

1.16 %

Class III

< 2.50 %

1.77 %

Class IV

> 2.50 %

2.95 %

Each month, the CCSS calculates the total monthly social contributions bill, based on the gross monthly salaries declared by the employer on the list of salaries. They then send the employer an account statement before the 15th of the month showing the total amount of social contributions to be paid (employer's and employees' contributions).

Paying social contributions

CCSS account statement

The account statement is always divided into 3 distinct parts:

'Debit' part

The following items, in particular, may appear in this part:

  • the debit balance from the previous statement;
  • a breakdown of the contributions by social security institution for the month in question (month M);
  • any potential adjustments to contributions made for the period prior to month M;
  • the reversal of the instalment amount claimed for month M;
  • the instalment due for the following month (M+1);
  • any outstanding interest on late payments;
  • fines, if applicable.
'Credit' part

The following items, in particular, may appear in this part:

  • the credit balance from the previous statement;
  • the sum of the payment or cumulative payments made since the previous statement;
  • any reimbursement of contributions or payment reversals;
  • credit transfers from one account to another.
'Balance' part

The overall balance, corresponding to the total amount of social contributions to be paid, appears at the bottom of the account statement and is arrived by calculating the sum of the items in the 'debit' and 'credit' parts.


The employer must settle the balance shown in the CCSS's monthly invoice within 10 days of the date of issue of the CCSS contributions statement. This deadline must be respected in all circumstances, even if the employer wishes to make a claim in connection with the calculation of the social contributions.

Valid claims will give rise to a subsequent adjustment.

For the CCSS to be able to correctly record their payments, the employer must:

  • specify their registration number on the transfer or payment order;
  • pay the amount on each account statement separately, if employees are registered under different employer registration numbers.

Furthermore, the employer may simplify the payment transactions by authorising the CCSS to collect direct-debit payments.

Contributions which are unpaid on or after the due date will bear late-payment interest starting from the first day of the first month after the contribution deadline. The interest rate on late payments is set at 0.6 % per whole calendar month; fractions of months are disregarded.


Enforced collection of contributions

The CCSS will invariably initiate enforced collection when 4 months of contribution arrears are accrued.

The enforced collection procedure starts with a formal demand for payment, sent to the debtor by registered letter, directing them to:

  • either pay the outstanding contributions within 15 days of receipt of the registered letter;
  • or accept the payment deadline proposed by the CCSS.

The employer can apply for a longer deadline than is offered. However, deadline extensions will only be granted on an exceptional basis.

Late payers who have been granted an extension of the payment deadline are still required to pay the current contributions, including late payment interest at an annual rate of 7.2 %.

Where the debtor does not meet the new payment deadline, or has not accepted the proposed payment deadline, the CCSS will initiate enforced collection of contributions by administrative order, notified to the debtor by registered letter. A bailiff will enforce the order. If the bailiff cannot enforce collection due to a lack of funds, the CCSS will refer the case to a lawyer and begin bankruptcy proceedings against the debtor.

Forms / Online services

Mandat de domiciliation bancaire pour personnes morales

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Les destinataires de vos données sont les administrations compétentes dans le cadre du traitement de votre demande. Veuillez-vous adresser à l’administration concernée par votre demande pour connaître les destinataires des données figurant sur ce formulaire. Conformément au règlement (UE) 2016/679 relatif à la protection des personnes physiques à l'égard du traitement des données à caractère personnel et à la libre circulation de ces données, vous bénéficiez d’un droit d’accès, de rectification et le cas échéant d’effacement des informations vous concernant. Vous disposez également du droit de retirer votre consentement à tout moment.

En outre et excepté le cas où le traitement de vos données présente un caractère obligatoire, vous pouvez, pour des motifs légitimes, vous y opposer.

Si vous souhaitez exercer ces droits et/ou obtenir communication de vos informations, veuillez-vous adresser à l’administration concernée suivant les coordonnées indiquées dans le formulaire. Vous avez également la possibilité d’introduire une réclamation auprès de la Commission nationale pour la protection des données ayant son siège à 15, boulevard du Jazz L-4370 Belvaux.

En poursuivant votre démarche, vous acceptez que vos données personnelles soient traitées dans le cadre de votre demande.

Lastschriftmandat für juristische Personen

Ihre in diesem Formular erfassten personenbezogenen Informationen werden von der zuständigen Verwaltungsbehörde verarbeitet, um Ihren Antrag erfolgreich abzuschließen.

Diese Informationen werden von der Behörde für den zur Verarbeitung erforderlichen Zeitraum gespeichert.

Die Empfänger Ihrer Daten sind die im Rahmen Ihres Antrags zuständigen Verwaltungsbehörden. Um die Empfänger der in diesem Formular erfassten Daten zu erfahren, wenden Sie sich bitte an die für Ihren Antrag zuständige Behörde.

Gemäß der Verordnung (EU) 2016/679 zum Schutz natürlicher Personen bei der Verarbeitung personenbezogener Daten und zum freien Datenverkehr haben Sie das Recht auf Zugang, Berichtigung und gegebenenfalls Löschung Ihrer personenbezogenen Informationen. Sie haben zudem das Recht, Ihre erteilte Einwilligung jederzeit zu widerrufen.

Weiterhin können Sie, außer in Fällen, in denen die Verarbeitung Ihrer Daten verpflichtend ist, Widerspruch einlegen, wenn dieser rechtmäßig begründet ist.

Wenn Sie diese Rechte ausüben und/oder Einsicht in Ihre Informationen nehmen möchten, können Sie sich unter den im Formular angegebenen Kontaktdaten an die zuständige Verwaltungsbehörde wenden. Sie haben außerdem die Möglichkeit, bei der Nationalen Kommission für den Datenschutz Beschwerde einzulegen (Commission nationale pour la protection des données, 15, boulevard du Jazz L-4370 Belvaux).

Wenn Sie Ihren Vorgang fortsetzen, akzeptieren Sie damit, dass Ihre personenbezogenen Daten im Rahmen Ihres Antrags verarbeitet werden.

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