How to Calculate Taxable Net Pay on the French Payslip in 2026: A Complete Guide

In brief — how to calculate taxable net pay. Taxable net pay (net imposable, also called net fiscal, the taxable net) is the amount used as the basis for the employee’s income tax. It is built up from gross salary:

Taxable net pay = gross salary − deductible employee contributions (including deductible CSG at 6.80%) + non-deductible CSG (2.40%) + CRDS (0.50%) + taxable employer share of health/provident cover − exempt overtime

It is higher than the net pay actually received (non-deductible CSG and CRDS are added back in) and different from the net social amount (montant net social). Figures updated with 2026 parameters (PASS, CSG/CRDS).

Introduction: Understanding Taxable Net Pay in Payroll

Taxable net pay is one of the most strategic items on the payslip. It determines the basis on which the employee will be taxed for income tax purposes, and it is the figure reported to the tax authorities through the DSN (Déclaration Sociale Nominative — the mandatory monthly digital social declaration**)**. Yet how it is built up often remains poorly understood, even by experienced payroll professionals.

In 2026, several parameters affect the calculation of taxable net pay: non-deductible CSG, CRDS, the employer share of supplementary social protection (PSC — protection sociale complémentaire**), exempt overtime, and the 1.75% allowance on the CSG/CRDS base. This complete guide walks you step by step through mastering this essential calculation, drawing on the references of the BOSS (Bulletin Officiel de la Sécurité Sociale — the Official Social Security Bulletin)** available at boss.gouv.fr.

What Is Taxable Net Pay?

Definition and Role on the Payslip

Taxable net pay, sometimes called net fiscal (the taxable net), corresponds to the amount of employment income subject to income tax. It must appear on the payslip since the reform standardising and clarifying payslips. It must not be confused with the net pay before tax or with the net social amount (MNS).

In practice, taxable net pay is calculated using the following formula:

Taxable net pay = Gross salary – Deductible employee contributions + Non-deductible CSG (2.40%) + CRDS (0.50%) + Taxable employer PSC share

Difference Between Taxable Net Pay, Net Pay and the Net Social Amount (MNS)

It is essential to distinguish these three concepts:

• Net pay before tax: the amount actually paid into the employee’s bank account, before withholding tax at source (prélèvement à la source, PAS).
• Taxable net pay: the basis for calculating income tax. It is higher than net pay because it adds back non-deductible CSG and CRDS.
• Net social amount (MNS): introduced in 2023, it serves as a reference for social benefits (RSA, the prime d’activité activity bonus). It differs from taxable net pay because it does not incorporate the same adjustments.

The Components of the Taxable Net Pay Calculation

Gross Salary: The Starting Point

The calculation of taxable net pay starts from gross salary, which includes all remuneration items: base salary, bonuses, benefits in kind, overtime, and various allowances subject to contributions. For an employee with a monthly gross salary of €3,200, this amount is the starting point.

Deductible Employee Contributions

All mandatory employee contributions that are deductible from income tax are deducted from the gross. This includes:

• Health insurance, retirement and unemployment contributions;
• Supplementary pension contributions (Agirc-Arrco);
• Deductible CSG at the rate of 6.80%;
• Employee-share provident and health insurance contributions.

Caution: deductible CSG (6.80%) is indeed subtracted from the gross to obtain taxable net pay, but non-deductible CSG (2.40%) and CRDS (0.50%) are not.

Non-Deductible CSG (2.40%) and CRDS (0.50%)

These two contributions, although withheld on the payslip, are not deductible from income tax. They must therefore be added back into taxable net pay. In practice, they increase the employee’s tax base.

In 2026, the applicable rates are:

• Total CSG: 9.20%, of which 6.80% is deductible and 2.40% is non-deductible;
• CRDS: 0.50%, entirely non-deductible.

These contributions apply to 98.25% of gross salary (after applying the 1.75% allowance), up to a limit of 4 annual social security ceilings (4 PASS), i.e. €192,240 in 2026. Above this threshold, CSG and CRDS apply to 100% of remuneration, without the allowance.

The 1.75% Allowance on the CSG/CRDS Base

In accordance with the BOSS, a flat-rate allowance of 1.75% is applied to earned income for the calculation of the CSG and CRDS base. This allowance represents professional expenses. It applies only to the portion of remuneration less than or equal to 4 PASS (i.e. €192,240 per year in 2026, or €16,020 per month).

Example: For a gross salary of €3,200, the CSG/CRDS base is: €3,200 × 98.25% = €3,144.

The Employer Share of Supplementary Social Protection (PSC)

The employer’s contribution to funding mandatory health insurance and provident cover constitutes a taxable benefit for the employee. Although it is not subject to social security contributions (within certain limits), it must be added back into taxable net pay.

In practice, if the employer pays €60 per month towards health insurance and €25 per month towards provident cover, i.e. €85 in total, this amount is added to the employee’s taxable net pay.

BOSS reference: the employer PSC share is subject to CSG/CRDS but excluded from the social security contributions base within the limits set by Article L.242-1 of the French Social Security Code.

Complete Example of Calculating Taxable Net Pay in 2026

Example Data

Let us take the case of a management-level (cadre) employee with the following items:

• Monthly gross salary: €3,200
• Total employee contributions (excluding CSG/CRDS): €580
• Deductible CSG (6.80% × 98.25% × 3,200): €213.79
• Non-deductible CSG (2.40% × 98.25% × 3,200): €75.46
• CRDS (0.50% × 98.25% × 3,200): €15.72
• Employer share of health insurance: €60
• Employer share of provident cover: €25

Step-by-Step Calculation

Step 1: Gross salary = €3,200

Step 2: Deduction of deductible employee contributions = 3,200 – 580 – 213.79 = €2,406.21

Step 3: Adding back non-deductible CSG = 2,406.21 + 75.46 = €2,481.67

Step 4: Adding back CRDS = 2,481.67 + 15.72 = €2,497.39

Step 5: Adding back the employer PSC share = 2,497.39 + 85 = €2,582.39

Monthly taxable net pay is therefore €2,582.39.

The Treatment of Exempt Overtime

The Principle of the Tax Exemption

Since the reactivated TEPA law, overtime hours (and additional hours for part-time employees) benefit from an income tax exemption up to a limit of €7,500 net per year. This ceiling is assessed over the calendar year.

In practice, the remuneration for exempt overtime is removed from taxable net pay, which reduces the employee’s tax base.

Impact on the Taxable Net Pay Calculation

If an employee works overtime whose taxable net remuneration amounts to €250 in the month, and has not yet reached the €7,500 annual ceiling, this amount will be deducted from taxable net pay.

Example: Returning to our employee with taxable net pay of €2,582.39. If they worked exempt overtime worth €250, their taxable net pay becomes: 2,582.39 – 250 = €2,332.39.

The employer must track an annual cumulative total of exempt overtime to verify compliance with the €7,500 ceiling. Beyond that, overtime remuneration becomes taxable again.

Meal Vouchers (Titres-Restaurant) and Taxable Net Pay

Exempt Employer Share and Limits

The employer’s contribution to meal vouchers is exempt from income tax within certain limits. The employer share is exempt if it meets the following conditions:

• It represents between 50% and 60% of the value of the voucher;
• It does not exceed the exemption ceiling, revalued each year in the same proportions as the first bracket of the income tax scale (€7.32 per voucher as of 1 January 2026; BOSS, Article 81-19° of the French General Tax Code).

If the employer contribution complies with these limits, it does not have to be added back into taxable net pay. However, any excess must be added to the employee’s taxable net pay.

The Link Between Taxable Net Pay and the DSN

Reporting to the Tax Authorities

Taxable net pay is reported monthly to the tax authorities via the DSN. It is this figure that enables the calculation of withholding tax at source (PAS). The PAS rate, whether personalised or neutral, applies directly to taxable net pay to determine the amount of tax withheld each month.

Errors in calculating taxable net pay therefore have direct consequences:

• On the amount of PAS withheld each month;
• On the employee’s pre-filled income tax return;
• On potential URSSAF or tax audits.

Verification and Correction

Where an error in taxable net pay is detected, the employer must carry out a correction in the DSN. It is advisable to systematically check the consistency between the taxable net pay shown on the payslip and the figure reported in the DSN, particularly in the event of:

• Back-pay adjustments;
• Contribution corrections;
• Changes in situation (part-time work, sick leave, etc.).

Special Cases Affecting Taxable Net Pay

Social Security Daily Allowances (IJSS)

IJSS (daily allowances) paid by the CPAM (health insurance fund) in the event of illness are taxable (except for exceptions relating to a long-term illness, ALD). Where the employer applies subrogation, the IJSS are included on the payslip and must appear in taxable net pay.

Benefits in Kind

Benefits in kind (company car, housing, meals, ICT equipment) are included in gross salary and therefore in taxable net pay. They may be valued on a flat-rate or actual basis, according to the BOSS rules.

Employee Savings Schemes

Sums paid under profit-sharing (intéressement) or statutory profit-sharing (participation) are not taxable if they are allocated to a savings plan (PEE, collective PER). However, if the employee opts for immediate payment, these sums are added to taxable net pay.

Severance Payments

Severance payments (indemnités de licenciement) are exempt from income tax within certain limits (the highest of the statutory or collectively agreed indemnity, 50% of the total indemnity, or 2 PASS). Beyond that, the excess portion is taxable and included in taxable net pay.

Best Practices for Payroll Managers

Monthly Control Points

To ensure the accuracy of taxable net pay, it is advisable to put in place the following checks:

• Verify the calculation formula in the payroll software, particularly after configuration updates;
• Check the add-back of the employer PSC share, especially when changing health insurance or provident schemes;
• Track the cumulative total of exempt overtime to detect when the €7,500 threshold is crossed;
• Reconcile the taxable net pay on the payslip with the corresponding line in the DSN;
• Archive payslips and supporting documents to facilitate any audits.

Common Errors to Avoid

The main errors observed in practice are:

• Forgetting to add back the employer PSC share;
• Confusing deductible and non-deductible CSG;
• Failing to observe the €7,500 ceiling for exempt overtime;
• Applying the 1.75% allowance beyond 4 PASS;
• Confusing taxable net pay and the net social amount.

FAQ: Taxable Net Pay in Payroll

What is the difference between taxable net pay and the net social amount (MNS)?

The net social amount (MNS) serves as a reference for social benefits (RSA, the activity bonus), whereas taxable net pay serves as the basis for calculating income tax. The two amounts differ mainly in the treatment of non-deductible CSG, CRDS and certain remuneration items. The MNS does not add back the same items as taxable net pay.

Does deductible CSG reduce taxable net pay?

Yes. Deductible CSG (6.80%) is subtracted from gross salary in the calculation of taxable net pay. On the other hand, non-deductible CSG (2.40%) and CRDS (0.50%) are not deducted and therefore increase taxable net pay relative to net pay.

How should exempt overtime be treated in taxable net pay?

The net remuneration for overtime is deducted from taxable net pay up to a limit of €7,500 net per year. The employer must keep an annual cumulative total to ensure compliance with this ceiling. Beyond that, overtime becomes taxable again.

Is the employer share of health insurance taxable?

Yes. The employer’s contribution to funding mandatory health insurance (and provident cover, where applicable) constitutes a taxable benefit. It must be added back into the employee’s taxable net pay, even though it is exempt from social contributions within certain limits.

How can taxable net pay be verified on the payslip?

You can reconstruct taxable net pay by starting from gross salary, deducting the deductible employee contributions (including deductible CSG), then adding non-deductible CSG, CRDS and the employer PSC share. Compare the result with the “taxable net pay” or “cumulative taxable net pay” line on the payslip. If there is a discrepancy, check the treatment of exempt overtime and benefits in kind.