3,925 €. This figure, far from being trivial, marks the invisible line that every payslip has been monitoring since 2016. Since the company health insurance became mandatory in private companies, its cost is clearly displayed, shared between employer and employee. But behind this distribution, each convention, each collective agreement tends to blur the lines.
And here lies the slippery ground: errors in allocation or calculation on bracket 1 regularly occur, creating discrepancies in net pay and disrupting social balance. Knowing how to read these lines ensures the accuracy of the payslip, but also defends one’s most concrete rights.
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Decoding the payslip: points to watch
On the payslip, every mention is law. Among the most observed is the complementary bracket 1 on the payslip. It embodies the collective foundation of social protection, applied to the portion of gross salary that does not exceed the monthly social security ceiling (PMSS), set at 3,925 € in 2025. Below this threshold, the contribution is organized: 60% for the employer, 40% for the employee, without exception.
To better understand, here are the key parameters that govern this line:
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- Base: gross salary limited to 1 PMSS
- AGIRC-ARRCO bracket 1 contribution rate: 3.15% for the employee, plus 0.86% for general balance contribution
- Amount deducted: displayed separately on the payslip, detailing the employer’s share and the employee’s share
The complementary bracket 1 is the employer’s obligation to provide everyone with a coverage base: routine care, hospitalization, consultations, optical, dental. A solidarity imperative, enshrined in law and branch agreements. Examining this line is verifying that social rights are respected, that calculations are correct, and that the legal framework remains stable. Every employee, every payroll manager, has an interest in understanding what is at stake here.
Complementary bracket 1: what is its purpose and how does it apply?
The complementary bracket 1 appears on every payslip in the private sector. Established by the National Interprofessional Agreement of 2016, it requires the employer to offer collective health coverage, regardless of position or seniority. Only the portion of the salary that does not exceed the PMSS (3,925 € in 2025) is concerned.
This title, far from being a mere detail, attests to everyone’s participation in a company mutual covering basic needs: care, hospitalization, consultation, optical, dental. The company must cover at least half of the contribution; the rest is deducted from the employee. This sharing guarantees a minimum protection for all, within a framework dictated by law, collective agreements, or company agreements.
In practice, the complementary bracket 1 acts as a common foundation. Each month, the contribution is added to social deductions. It should not be confused with bracket 2, reserved for salaries exceeding the PMSS and subject to different rules. On the payslip, this line appears in the social contributions section, accompanied by information on the amount, distribution, and guarantees.
Here’s what to remember about its scope of application:
- It concerns all private sector employees
- The calculation is based on gross salary up to 1 PMSS
- The guarantees cover routine care, hospitalization, optical, and dental
The mention of complementary bracket 1 recalls the principle of solidarity that shapes social protection in France: a part of health financed collectively, integrated into remuneration, without distinction.
Common errors and tips for informed reading
The downside of quick reading
The payslip is not a formality: it lays out, line by line, the reality of the employer-employee relationship. Yet, the complementary bracket 1 often blends into the mass of contributions, perceived as a mere technical mention. The first trap: equating all health deductions with the same logic. In reality, the complementary health, collective and mandatory, differs from provident schemes, which are subject to different criteria.
Another confusion: the amount displayed for the complementary bracket 1 is not a charge imposed by the employer, but a sharing: employee share and employer share, with a legal minimum of 50% for the company. It is essential to look closely at each payslip: breakdown of amounts, applied rates, title of the collective contract.
To avoid unpleasant surprises, some reflexes are necessary:
- Compare the contribution rate with that provided by the collective agreement or company agreement: an unjustified discrepancy may reveal a configuration error
- Identify the net social amount: the inclusion or exclusion of certain contributions can impact income tax or access to certain rights
- The complementary health, well detailed on the payslip, grants rights to tax benefits and exemptions from social charges for the employer: ensure that the calculation is based on the correct foundations
The transparency of the payslip is not a detail. A careful reading will quickly highlight duplicates, outdated rates, or ceiling errors. In case of doubt, consult your HR or payroll department: each line, each amount conditions your rights and the solidity of your social coverage.
Ultimately, knowing how to read the complementary bracket 1 on your payslip means refusing to let slip what matters. It is choosing to understand, to better defend what protects us.