Many pensioners see a decrease in the net amount of their supplementary pension Agrec-Arrco. This drop, often sudden, is usually not due to an error in calculation but to automatic tax mechanisms. To understand why your transfer has decreased, we need to look at the social levies and the tax administration schedule.
Social levies: the main lever of variation
The most frequent cause of a fall in supplementary pension is the evolution of social contributions. Unlike the gross pension that remains stable, the net amount collected from your bank account depends on taxes levied at source.
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The functioning of the CSG, CRDS and CASA
Three levies affect your pension: the Generalised Social Contribution (CSG), the Contribution for the Reimbursement of the Social Debt (CRDS) and the Additional Contribution of Solidarity for Autonomy (CASA). The rate of these levies depends on yourTax Reference Income (RFR), available on your tax notice.
If your income has increased the previous year, or if you have crossed an income threshold, you can switch from an exemption to a reduced rate, or from a reduced rate to a full rate. This change in tax status is automatically transmitted by the tax administration to pension funds, which immediately changes the net amount paid.
Time lag and retroactive effect
The Agirc-Arrco follows a specific calendar. If rate changes occur theoretically on 1 January, the transfer of data between the Directorate-General for Public Finance (DGFiP) and pension funds takes time. Regularization is often effective in March.
In this case, the body shallRetroactive adjustment. In addition to the new rate applied to your March pension, the caisse recovers the amounts due for January and February. This accumulation explains why the decline appears to be sharp over a single month, before stabilizing in the following months.
Threshold effect: when a pension increase becomes punitive
An annual adjustment of the gross pension can paradoxically lead to a decrease in the net amount. This is explained by the structure of social levies in tranches.
As long as your income remains below a certain limit, the tax rate remains low. As soon as an increase, even minimal, pushes your income beyond a statutory threshold, the entire pension will be subject to a new tax rate. This jump can absorb the gain of revalorization and reduce your rest to live. This is the threshold effect: crossing an administrative limit changes the structure of your levy.
The reference tax income brackets
The four CSG rates applicable to your tax situation for a tax share are as follows:
| Sampling level | CSG rate | RFR threshold (1 part) |
|---|---|---|
| Total exemption | 0 % | Less than 13,048 € |
| Reduced rate | 3,8 % | Between 13,048 € and 17,057 € |
| Median rate | 6,6 % | Between 17,058 € and 26,470 € |
| Full rate | 8,3 % | Over 26,470 € |
Note: These thresholds are re-evaluated annually and vary according to the number of tax shares in your home. An overrun of a few euros is enough to switch to the upper tranche.
How to check and react to a decrease?
If you notice a drop, do not remain in uncertainty. There are several steps to validate the legitimacy of this change or to report an anomaly.
Consult his personal area Agrec-Arrco
Log in to the official website of the Agirc-Arrco or your supplementary pension fund. In your secure space, download yourPayment certificates. Compare the details of the current month with the previous month to identify the lines « CSG », « CRDS » and « CASA ». If the rate has changed, the reason is tax.
Check your tax notice
Get your last tax notice. See the line « Reference tax income ». This figure is valid for the current year. If this amount has increased as a result of the sale of property or the collection of exceptional income, the increase in your social contributions is justified.
What to do in case of manifest error?
If your RFR is stable and your family situation is the same, a transmission error is possible. In this case:
- Contact your tax centreto verify that the information provided to social bodies is accurate.
- Call 09 70 660 660, the unique number of the Agirc-Arrco, for a detailed explanation.
- Prepare your proofs: tax notices and pension bulletins for the last three months.
Special situations: expatriation and social assistance
Some specific cases have different rules. Pensioners residing taxably abroad are not subject to the CSG and the CRDS, but are subject to thesickness insurance contributionA specific pension can be deducted from their French pension.
If you benefit from the Solidarity Allowance for Active Persons (ASPA), you are in principle exempt from social contributions. A reduction in your supplementary pension could mean a reassessment of your ASPA entitlements rather than an increase in taxes. Vigilance is recommended at the time of receipt of the payment notice in March, a crucial period for the reconciliation of files.