The remuneration of a researcher at CNRS is based on a salary index system specific to the public service, where the gross salary depends on a weighted index multiplied by the value of the point. Understanding this mechanism allows for measuring the actual differences between grades, between steps, and between two researchers assigned to different geographical areas. This article details the amounts, bonuses, and variables that impact the final net salary.
Gross indexed salary: comparison between research officer and research director
The monthly gross salary forms the basis of the remuneration. It varies according to the body (research officer or research director), class, and step. With a gross index point value of 4.9228 euros since July 2023, the amounts span a wide range.
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| Grade and step | Weighted index | Monthly gross salary |
|---|---|---|
| Research officer normal class – step 1 | Grid entry | Approximately 2,250 euros net (excluding bonuses) |
| Research director 2nd class – step 1 | 672 | 3,308.11 euros |
| Research director 1st class – step 3 | 1,178 | 5,799.04 euros |
| Research director exceptional class – E2 | 1,334 | 6,566.99 euros |
The gap between the first step of the research director 2nd class and the top of the exceptional class exceeds 3,200 euros gross monthly. These progressions span variable durations, sometimes a year between two sub-steps, sometimes more than three years to move up a complete step.
To delve deeper into each level and the associated supplements, the salary grid for CNRS researchers details all the steps with updated amounts.
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RIPEC and bonuses at CNRS: what the indexed salary does not show
Since 2023-2024, CNRS has been gradually deploying the RIPEC (indemnity scheme for teaching and research staff). This system replaces the old bonuses linked solely to individual scientific merit with a multi-component structure.
The functional part of the RIPEC compensates for the responsibilities held: unit management, steering of structuring projects, and coordination of research groups. A researcher who leads a laboratory receives an additional amount that their colleague, at the same grade and step, does not receive.
- The component related to commitment and responsibilities values steering missions, not just scientific production
- The individual component rewards research results, evaluated periodically
- The family supplement is added from the first child, without conditions related to marital status
- The partial reimbursement of commuting expenses complements the net remuneration
This structure means that two researchers at the same step can receive very different amounts depending on their missions and family situation. The RIPEC has made the variable part more transparent, but also more dependent on the type of activity performed daily.
Residence allowance and geography: the same grade, two purchasing powers
The residence allowance remains a parameter often underestimated in discussions about CNRS remuneration. It can reach up to 3% of the gross salary in large urban areas, particularly in Île-de-France. In other areas, it drops to zero.
On a gross salary of 5,000 euros, this represents 150 euros monthly difference for an identical position. When considered over an entire career, the cumulative gap becomes significant. However, this allowance only partially compensates for the actual housing cost in the most strained metropolitan areas.
Higher education: a lever for additional remuneration
CNRS researchers who teach hours in higher education receive specific remuneration for these interventions. This supplement creates a income gap between those who engage in training and those who remain exclusively focused on research activities.
This mechanism does not appear in the indexed grid, but it weighs in the calculation of the actual annual salary. Involvement in teaching can represent the equivalent of an additional month of salary for the most sought-after profiles.
Remuneration of CNRS contractors: a different scale
Contract researchers do not fall under the indexed grid. Their remuneration depends on the nature of the contract and the employment level.
| Type of contract or level | Monthly gross range |
|---|---|
| Doctoral contract | 2,135 euros gross minimum |
| Scientific work | 2,991.58 euros to 4,756.76 euros |
| Study and design work | 2,466.98 euros to 3,786.43 euros |
| Technical study work | 2,257.56 euros to 3,401.94 euros |
| Internship | 659.76 euros gross |
Contractors benefit from the family supplement and partial reimbursement of transport costs, but not from all components of the RIPEC reserved for permanent staff. Previous professional experience and the place of assignment influence positioning within the range.
The difference between a contractual doctoral student at 2,135 euros gross and a tenured researcher at the end of their career earning over 6,500 euros gross illustrates the breadth of the system. The competitive examination for tenure remains the turning point towards the indexed grid and its mechanisms for automatic progression by step, to which are added bonuses related to responsibilities and seniority in the body.