Your net pension has decreased between two payments, but your gross pension has not changed. Before taking action, it is essential to identify the exact cause of the discrepancy. A decrease in retirement in 2026 often correlates with a tax recalculation, a freeze on the value of the Agirc-Arrco point, or a change in the CSG bracket. Distinguishing between these three mechanisms determines the course of action to follow.
Gross and net pension in 2026: where does the decrease actually lie
The most common confusion is interpreting a decrease in the payment as a decrease in the pension itself. The table below summarizes the three main causes and their impact on the amount received.
| Cause of the decrease | Impact on gross | Impact on net | Possible recourse |
|---|---|---|---|
| Limited revaluation (0.9% on January 1, 2026) | Slight increase | Increase absorbed by inflation | No (regulatory decision) |
| Freeze on the value of the Agirc-Arrco point (€1.4386) | Stable | Stable or decreasing if deductions increase | Ongoing collective action (legal action) |
| Change in CSG/CRDS/CASA rates | Stable or increasing | Decreasing (up to several tens of euros/month) | Verification of tax notice, contestation of RFR |
To identify the cause, compare the amount gross of your pension over two consecutive months from your retirement insurance or Agirc-Arrco account. If the gross is stable or slightly increasing but the net decreases, the cause is fiscal and social.
A change in the CSG bracket alone can shift the net received by several euros per month. Taking action in case of a decrease in retirement requires having first verified whether the issue arises from the pension calculation or the tax deduction.
Recalculation of CSG on pensions: check your tax notice before any recourse
In February and then in September 2026, many retirees notice a net decrease related to the processing of the spring income declaration. The tax administration sends a new withholding rate to the pension funds, which applies it to the next payment.
The verification process is precise:
- Retrieve the details of social deductions (CSG, CRDS, CASA) from the monthly statements available in each fund’s personal space.
- Compare the rates applied between two consecutive months to detect a possible shift to the higher CSG bracket.
- Check the reference tax income (RFR) on the tax notice: even a slight exceedance of the threshold can trigger a rate change.
- If the RFR has been inflated by an exceptional income (capital gain, life insurance buyback), request smoothing or correction from the tax center.
A point often overlooked: the contestation is not made to the pension fund but to the tax administration. The fund applies the rate communicated to it. Contesting directly with them will not yield results.
Freeze on the Agirc-Arrco point and collective action: what judicial action changes
The value of the Agirc-Arrco point remains frozen at €1.4386 in 2026. This stagnation, combined with a contractual indexing formula (inflation excluding tobacco minus 0.4 points), has widened a purchasing power gap estimated between two and four points since 2019.
For former executives whose supplementary pension represents a significant part of the total pension, the impact is most pronounced. Conversely, for retirees whose basic pension constitutes the bulk of their income, the freeze weighs less in absolute terms.
Judicial action and the scope of recourse
Trade unions have taken legal action to contest the policy of freezing the point despite the financial reserves of the scheme, estimated at €91 billion. This collective action does not produce an immediate effect on individual pensions but could compel social partners to reconsider the indexing formula during upcoming negotiations.
Individually, a recourse against the freeze on the point has very little chance of success. The value of the point is governed by a collective agreement (ANI), not by an administrative decision that can be contested in an administrative court. Affected retirees can, however, reach out to their union to participate in ongoing collective actions.
Concrete steps before the Commission for amicable recourse (CRA)
If after verification the gross amount of your pension seems incorrect (calculation error of quarters, omission of contributed periods, incorrect application of the reducing coefficient), the recourse follows a specific circuit.
- Send a written complaint to the relevant fund (Cnav, MSA, Agirc-Arrco) attaching supporting documents (career statement, pay slips, certificates).
- In case of rejection or absence of response within two months, contact the Commission for amicable recourse (CRA) of the fund by registered mail.
- If the CRA rejects the request, the contentious recourse is made before the social division of the judicial court, within two months after notification of the rejection.
For the Agirc-Arrco supplementary pension, the procedure differs: the contestation goes through the claims service of the managing social protection group, then through Agirc-Arrco mediation before any judicial action.
Reducing coefficient of 10%: check your eligibility for exemption
The reducing coefficient of 10% applied for three years to liquidations occurring between January 2019 and the end of November 2023 continues to affect certain supplementary pensions. Several cases of exemption exist (disability, caregivers, veterans, CSG exemption). Check if your situation corresponds to one of the fifteen exemption cases listed in the Agirc-Arrco general conditions.
An error in the application of the reducing coefficient constitutes a strong basis for a complaint to the fund, with a high correction rate when supporting documents are provided at the first request.
The decrease in pension in 2026 rarely results from a single cause. The most useful reflex remains the systematic comparison of gross/net over two consecutive months. This simple verification directs you to the right interlocutor: tax administration for a deduction issue, pension fund for a calculation error, Agirc-Arrco mediation for a dispute over the supplementary pension.
