Part-time salary: gross, net and full-time equivalent

How it is calculated

Two steps. First a calculation in code: the part-time gross is the full-time gross multiplied by the share, i.e. your weekly hours divided by the legal working week of 35 h (or the percentage you enter). Then the modele-social engine, the one behind URSSAF's simulator, calculates the net with a contract marked “part time” and your weekly hours: contribution ceilings and thresholds are prorated as on a real payslip.

The full-time equivalent shown is the net the same hourly gross would give on full time, also calculated by the engine. If you enter additional hours, the tool adds them with the engine's premium and shows the extra gross pay and net.

What the result includes

So that two people get the same figure from the same gross pay, the site always calculates from the same baseline situation. Each line can be changed in the calculator's options where it matters.

• General social security scheme (régime général), rates as of 26 October 2026 (rules from modele-social, the engine behind URSSAF's simulator).
• Permanent full-time contract (CDI), 35 hours a week, i.e. 151.67 h a month, paid over 12 months.
• Non-cadre by default (cadre status is one button away), collective agreement set to the general rules (“droit commun”).
• Company health cover (mutuelle) of €40 a month, of which €20 is deducted from pay, URSSAF's default setting; zero is possible in the options.
• Outside Alsace-Moselle (option available), without meal vouchers or benefits in kind.
• Before income tax: tax withheld at source depends on your household and comes on top (see the “net after tax” tool).
• Minimum wage (SMIC) since 1 June 2026: €12.31 gross per hour (service-public.gouv.fr).
• Part-time contract: contribution ceilings and general reduction prorated to your hours; twelve months paid.

Limits

A correct calculation for a typical situation is not your payslip. Here is what the tool does not know, so that you read the result as a reliable order of magnitude, not a promise.

• Collective agreement: sector minimums, seniority bonuses, compulsory thirteenth month and specific provident schemes are not taken into account (general rules only).
• Bonuses, variable pay, overtime, benefits in kind: left out, except in the tools that ask for them.
• Health cover and provident scheme: your actual contribution may be different; change it in the options.
• Alsace-Moselle: the option adds the local scheme's health contribution, without its other specifics.
• Public sector not covered: civil servants' pay scales and contributions follow other rules.
• Simplified tax: no tax reductions or credits, no exceptional income; the engine's “tax” module is flagged as experimental by URSSAF.
• Minimum hours and their spread: the law sets a minimum weekly duration with exceptions (students, written request, collective agreement); the tool does not check it.
• Therapeutic part time, parental leave, phased retirement: top-ups (daily allowances, benefits) come on top and are not calculated here.
• Months paid: the tool counts twelve; for a thirteenth month, use the gross-to-net converter with your hours.

The same job at different hours

For a full-time job at €3,000 gross a month, non-cadre: share, gross, net and net per hour by weekly hours, calculated by the site's engine.

Full time, 35 h: €2,353 net a month.

Share, hours and full-time equivalent

A part-time job ad sometimes states a reduced monthly gross, sometimes a full-time gross with a share: both readings are possible in the tool. The hourly gross, on the other hand, does not change with the share; it is the indicator to compare from one job to the next, with the hourly, monthly, yearly tool. A part-time employee is entitled to the same hourly rate as a full-timer in the same job, and most bonuses are prorated.

Additional hours: a reminder in figures

Hours worked beyond the contract are not overtime but additional hours, with a premium from the first one. In the example, 2 h more a week on a 28 h contract bring €189 gross and €149 net a month, with a premium of 10.0%. They cannot exceed a fraction of the contract's hours or bring it up to the legal working week; beyond that, the contract itself must change. The overtime tool covers the full-time case.

Negotiating part time

Negotiate in full-time gross terms, then apply the share: that is how pay scales and recruiters think, and it stops part time from hiding a low hourly rate. Place your full-time gross with “Am I paid fairly?”, convert the offer with the gross-to-net converter, and check the floor in the SMIC guide: the SMIC applies pro rata to hours.