What is the compensation for the increase in the CSG in the public service?

Verified 01 January 2026 - Public Service / Directorate of Legal and Administrative Information (Prime Minister)

At 1er January 2018, the rate of CSG: titleContent went from 7.5% à 9.2%. To compensate for the loss of income resulting from this increase, a compensatory allowance was awarded to public officials. The amount of this allowance varies depending on whether you were appointed or recruited before 2018 or from 2018. We present you the information to know.

Agent appointed or recruited before 2018

The calculation of the compensation for the increase in the CSG varies depending on whether you were posted and paid on December 31, 2017 or unpaid on December 31, 2017.

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You were in position and paid as of December 31, 2017

What are the conditions to qualify for the CSG compensation?

You receive compensation for the increase in the CSG, which occurred in January 2018, if you meet the following 3 conditions:

  • You are a civil servant (full-time or non-full-time) or contract agent
  • You were appointed or recruited before 2018
  • You were in position and paid as of December 31, 2017.
What is the gross amount of CSG compensation?

The annual gross amount of the CSG compensation is calculated as follows:

  • Your gross annual remuneration received in 2017 is multiplied by 1.6702%
  • The annual amount of the exceptional solidarity contribution that was levied in 2017 on your gross remuneration and, if you are a contract worker, also the annual amounts of your health insurance contributions and the unemployment insurance contribution, is deducted from the amount thus obtained
  • The result obtained is multiplied by 1.1053.

The gross remuneration taken into account includes all remuneration elements (index salary, residence allowance, family salary supplement, new index bonus, bonuses and allowances, benefits in kind).

Reimbursements of professional expenses are not taken into account.

If you were appointed, recruited or reinstated during 2017, the gross remuneration you received is reported on an annual basis for the whole of 2017.

Example :

You were nominated for the 1re times the 1er September 2017 and received 4 months of remuneration in 2017. The annual gross remuneration taken into account for the calculation of your compensation is equal to your gross remuneration / 4 x 12.

At 1er in january 2026, if your compensation has increased between 2024 and 2025, the amount of your compensatory allowance is reassessed in proportion to this increase according to the following formula:

Annual gross compensation 2025 / Annual gross compensation 2024) x Initial amount of compensation 2025

If you are temporarily no longer paid at 1er January 2026 (due to parental leave, availability, etc.), the review of the amount of your compensatory allowance is carried out upon your return.

To what contributions is the CSG compensatory allowance subject?

The compensation is subject to the following contributions:

  • Contribution to Public Service Additional Pension Plan (PSPP) if you are a civil servant
  • Sickness and pension contributions from the general social security system and contributions to Ircantec if you are a non-full-time contract or territorial civil servant working less than 28 hours per week
  • CSG and CRDS: titleContent whether you are a civil servant or a contractor.
How is the CSG compensation paid?

A 12e of the annual net amount of the allowance shall be paid each month.

The allowance is the subject of a specific heading on the pay slip.

The amount shall be discounted, either upwards or downwards, in the same proportion as the index salary, in the case of part-time or sick leave on half-pay or without pay.

In the event of a change of employer, the amount of the allowance shall be communicated to the new employer.

You were not paid on December 31, 2017 (parental leave, availability,...)

What are the conditions to qualify for the CSG compensation?

If you were not paid on December 31, 2017 (due to parental leave, availability, etc.), you will receive the compensation for the increase in the CSG if you are official full-time or non-full-time working more than 28 hours per week.

What is the gross amount of CSG compensation?

The allowance is a monthly lump sum equal to your monthly gross remuneration, on the date of your reinstatement, multiplied by 0.76%.

The monthly remuneration taken into account is your 1re remuneration paid for a full month.

The gross remuneration taken into account includes all remuneration elements (index salary, residence allowance, family salary supplement, new index bonus, bonuses and allowances, benefits in kind).

Reimbursements of professional expenses are not taken into account.

At 1er in january 2026, if your compensation has increased between 2024 and 2025, the amount of your compensatory allowance is reassessed in proportion to this increase according to the following formula:

Annual gross compensation 2025 / Annual gross compensation 2024) x Initial amount of compensation 2025

If you are temporarily no longer paid at 1er January 2026 (due to parental leave, availability, etc.), the review of the amount of your compensatory allowance is carried out upon your return.

To what contributions is the CSG compensatory allowance subject?

The compensation is subject to the following contributions:

How is the CSG compensation paid?

The net compensatory allowance is paid monthly.

It is the subject of a specific heading on the pay slip.

In case of reintegration during the month, it is paid according to the number of calendar days of presence.

The amount shall be discounted, either upwards or downwards, in the same proportion as the index salary, in the case of part-time or sick leave on half-pay or without pay.

In the event of a change of employer, the amount of the allowance shall be communicated to the new employer.

Agent appointed or recruited from 2018

You receive a compensation for the increase in the CSG if you are a public servant and work more than 28 hours per week.

The allowance is a monthly lump sum equal to your monthly gross remuneration, on the date of your appointment or recruitment, multiplied by 0.76%.

The monthly remuneration taken into account is your 1re remuneration paid for a full month.

The gross remuneration taken into account includes all remuneration elements (index salary, residence allowance, family salary supplement, new index bonus, bonuses and allowances, benefits in kind).

Reimbursements of professional expenses are not taken into account.

At 1er in january 2026, if your compensation has increased between 2024 and 2025, the amount of your compensatory allowance is reassessed in proportion to this increase according to the following formula:

Annual gross compensation 2025 / Annual gross compensation 2024) x Initial amount of compensation 2025

If you are temporarily no longer paid at 1er January 2026 (due to parental leave, availability, etc.), the review of the amount of your compensatory allowance is carried out upon your return.

The compensation is subject to the following contributions:

The net compensatory allowance is paid monthly.

It is the subject of a specific heading on the pay slip.

In case of recruitment or appointment during the month, it is paid according to the number of calendar days of presence.

The amount shall be discounted, either upwards or downwards, in the same proportion as the index salary, in the case of part-time or sick leave on half-pay or without pay.

In the event of a change of employer, the amount of the allowance shall be communicated to the new employer.