
The salary of a researcher at the CNRS is based on a salary index system specific to the state public service. Each step corresponds to a higher index, multiplied by the value of the index point (set at 4.92 euros gross per month since July 2023). The net salary therefore depends on the grade, seniority, and several supplements that significantly modify the pay slip.
Index point and salary index: the basic mechanism
Unlike the private sector, the remuneration of a CNRS researcher is not negotiable. It is set by a national grid. The gross monthly salary results from a simple operation: higher index multiplied by the value of the point. The higher index ranges from 340 for the lowest steps to 1329 for the highest.
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This calculation produces a gross salary, from which social contributions (civil pension, CSG, CRDS) are deducted. The transition from gross to net represents a discount of about one-fifth of the gross amount, but this ratio fluctuates according to individual situations.
To delve deeper into the issue of the net salary of a CNRS researcher, it is necessary to include the bonuses and allowances that are added to the base salary and often escape the grids published online.
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Bonuses and allowances that modify the monthly net
The salary index only represents part of the actual remuneration. Several supplements increase the net received each month.
- Grade-related allowance: paid monthly to researchers, its amount depends on the body (research officer or research director) and the class.
- Allowance related to the exercise of specific functions or responsibilities: it concerns researchers who lead a unit, a program, or a scientific department.
- Residence allowance: set as a percentage of the base salary (3%, 1%, or 0% depending on the city of assignment).
- Family salary supplement: its amount depends on the number of dependent children.
- Partial reimbursement of commuting expenses.
Since 2023-2024, an additional bonus has been added to this system: the individual scientific performance bonus (PIP). Awarded annually based on performance criteria, it differs from the PEDR (doctoral and research supervision bonus), which has historically been renewed every four years.
PEDR and PIP: two distinct logics
The PEDR rewards doctoral supervision activity and scientific production over a long period. The PIP, more recent, targets annual performance. The two bonuses can be combined, creating a significant gap between two researchers of the same grade and step.
This overlap of bonuses explains why the gross salary grids published on institutional websites underestimate actual remuneration. The real monthly net can significantly exceed the salary index alone, sometimes by several hundred euros.
Revaluation of the lower grid: what has changed recently
The 2023-2024 public service salary conference has revalued the lower grids of category A, to which CNRS researchers belong. The gain has mainly manifested in the net, thanks to the increase in the index point and the alignment of the first steps.
For a research officer at the beginning of their career, this revaluation has allowed for a clearer gap with the minimum wage than before. The issue remains sensitive: for several years, the entry salary of a tenured researcher, after eight to ten years of higher education, was perceived as insufficiently distanced from the minimum wage.
The first steps of research officers remain among the lowest in category A of the public service for such a high qualification level. Salary progression then relies on seniority and grade promotions.

Supplementary income outside the grid: teaching and consulting
One aspect rarely included in salary comparisons concerns teaching hours. CNRS researchers do not have a statutory obligation to teach, unlike university teacher-researchers. However, many participate in universities or schools in the form of teaching assignments.
These additional hours are paid according to the teaching assignment regime in higher education and research. The amount varies depending on the type of intervention (lecture, tutorials, practical work). These additional incomes never appear in the official grids, which skews the perception of actual salary.
Consulting and expertise: a regulated framework
CNRS researchers can also undertake consulting or expertise missions for companies or institutions, within the framework of the activity accumulation allowed by their civil servant status. These missions, subject to declaration, generate additional income that varies greatly depending on the discipline and the researcher’s network.
Non-monetary benefits of a position at the CNRS
The remuneration of a CNRS researcher is not limited to the monthly net. The status of a state civil servant provides guarantees that the private sector does not systematically offer.
- Lifetime employment after tenure, without a performance clause for job retention.
- Public service retirement scheme, with a calculation based on the last six months of salary index (excluding bonuses).
- Scientific autonomy: the CNRS researcher freely chooses their research directions, unlike a corporate researcher directed by commercial strategy.
- Access to national and international research infrastructures funded by the state.
- Possibility of geographical and thematic mobility within the CNRS network, which includes over a thousand research units in France.
These benefits partly compensate for a salary level that remains modest compared to the remuneration offered in the private sector for equivalent profiles, particularly in applied scientific disciplines or engineering.
The choice of a career at the CNRS thus relies on a trade-off between stability, intellectual freedom, and income level. The salary index framework sets a rigid framework, but recent bonuses like the PIP and the possibilities for teaching assignments offer adjustment margins that the gross grids do not reflect.