Procedure · Tax and money

Claiming the prime d'activité (in-work benefit) from CAF or MSA: eligibility, claim, quarterly return

The prime d'activité tops up the income of people who work on modest earnings, employed or self-employed, from age 18. It is never paid automatically: you have to claim it online, then report your income every quarter to keep receiving it.

At a glance

Who: Employees, civil servants and self-employed people aged 18 or over on modest incomes who live in France on a stable basis; students and apprentices only above a minimum monthly income, or if they are raising a child alone.
When: As soon as you work on modest earnings: the benefit is due from the 1st day of the month you apply, so do not wait.
Where: Online, on the CAF website (general scheme) or the MSA website (agricultural scheme).
Cost: Free.
How long: Once approved, it is paid every month for the previous month (March's in April), for 3-month periods.

Prime d'activité simulator and claim (caf.fr)

Step by step

Check the conditions. You must be at least 18, in work, on modest earnings and living in France on a stable basis. EU nationals must have lived there for at least 3 months; other foreign nationals generally need a residence permit allowing work held for at least 5 years (except resident card holders, refugees, subsidiary protection and a few other cases). Students and apprentices only qualify above a minimum monthly income, and an internship stipend does not count as earned income.
Run a simulation. The CAF simulator estimates your entitlement from your household make-up and your income over the last three months. The calculation uses the montant net social on your payslips, a separate line from your take-home pay.
Submit your claim online. Apply on the CAF website, whether or not you already receive benefits from it, or on the MSA website if you are under the agricultural scheme. Declare your household and its income: salaries, benefits, pensions, maintenance received.
Get the decision. If the fund approves, you get a notification for a 3-month period, based on the previous quarter; the amount stays fixed for those 3 months, even if your income changes. If refused, you have 2 months to appeal to your fund's amicable appeals board (commission de recours amiable), then to the administrative court.
Validate your quarterly return. Each quarter you report your income so that your entitlement is recalculated. Since 1 March 2025 at CAF (1 July 2025 at MSA), salaries, unemployment benefit, sick pay and pensions are prefilled as montant net social: check them, validate, and add anything missing, such as maintenance. The calculation uses months M-2 to M-4.
Report any change. Tell your fund about a move, moving in together or separating, a change of work, income or assets. Your entitlement changes from the 1st day of the month of the event; an overpayment can be reclaimed for up to 2 years.

Documents to prepare

Your payslips for the last three months (montant net social line)
The income of other household members (salaries, unemployment benefit, pensions, maintenance)
Your claimant number and password if you are already registered with CAF or MSA
Your residence permit if you are not an EU national
Your bank details for the payments

Pitfalls to avoid

The benefit is never automatic: without a claim you do not get it, and it does not go back before the month you apply.
The prefilled income may be incomplete: maintenance or income the fund does not know about must be added.
An intern cannot qualify on their stipend alone: they need a sufficiently paid job alongside.
An unreported change creates an overpayment, recovered from the benefit or from your other payments (family allowances, housing benefit).

What Nego does for you

Check the age, residence and income conditions before you apply
Find your montant net social on your payslips and prepare the quarter's income
Tell you which changes to report to your fund, and when
Write your appeal to the amicable appeals board if you are refused

Nego follows the checked steps on this page, does the calculations with the site's tools and drafts your letters. It does not replace the administration: the procedure is completed on the official service.

Going further

Gross ↔ net converter Part-time pay Montant net social Payslip explained

Frequently asked questions

Is the prime d'activité taxable?

No: it is not taxable and is not declared on your tax return.

How much will I get?

It depends on your household, your earnings and your other income: the CAF simulator works it out. The amounts are uprated every year, and below a minimum monthly amount nothing is paid.

Can students and apprentices get it?

Yes, from 18, if their earnings exceed a monthly threshold shown on service-public.gouv.fr, or if they live alone with a dependent child. An internship stipend does not count as earned income.

When does the first payment arrive?

Once your claim is accepted, the benefit is due from the 1st day of the month you applied and paid the following month: March's benefit is paid in April.

What if CAF refuses?

Send an appeal to your CAF's (or MSA's) amicable appeals board within 2 months of receiving the decision. If the answer is still no, you can take it to the administrative court.

Official sources

Rules checked on 27 October 2026 against the sources above. This page explains the procedure; it replaces neither the administration nor legal advice.

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At a glance

Who

Employees, civil servants and self-employed people aged 18 or over on modest incomes who live in France on a stable basis; students and apprentices only above a minimum monthly income, or if they are raising a child alone.

When

As soon as you work on modest earnings: the benefit is due from the 1st day of the month you apply, so do not wait.

Where

Online, on the CAF website (general scheme) or the MSA website (agricultural scheme).

Cost

Free.

How long

Once approved, it is paid every month for the previous month (March's in April), for 3-month periods.

Step by step

Check the conditions. You must be at least 18, in work, on modest earnings and living in France on a stable basis. EU nationals must have lived there for at least 3 months; other foreign nationals generally need a residence permit allowing work held for at least 5 years (except resident card holders, refugees, subsidiary protection and a few other cases). Students and apprentices only qualify above a minimum monthly income, and an internship stipend does not count as earned income.

Run a simulation. The CAF simulator estimates your entitlement from your household make-up and your income over the last three months. The calculation uses the montant net social on your payslips, a separate line from your take-home pay.

Submit your claim online. Apply on the CAF website, whether or not you already receive benefits from it, or on the MSA website if you are under the agricultural scheme. Declare your household and its income: salaries, benefits, pensions, maintenance received.

Get the decision. If the fund approves, you get a notification for a 3-month period, based on the previous quarter; the amount stays fixed for those 3 months, even if your income changes. If refused, you have 2 months to appeal to your fund's amicable appeals board (commission de recours amiable), then to the administrative court.

Validate your quarterly return. Each quarter you report your income so that your entitlement is recalculated. Since 1 March 2025 at CAF (1 July 2025 at MSA), salaries, unemployment benefit, sick pay and pensions are prefilled as montant net social: check them, validate, and add anything missing, such as maintenance. The calculation uses months M-2 to M-4.

Report any change. Tell your fund about a move, moving in together or separating, a change of work, income or assets. Your entitlement changes from the 1st day of the month of the event; an overpayment can be reclaimed for up to 2 years.

Documents to prepare

Your payslips for the last three months (montant net social line)

The income of other household members (salaries, unemployment benefit, pensions, maintenance)

Your claimant number and password if you are already registered with CAF or MSA

Your residence permit if you are not an EU national

Your bank details for the payments

Pitfalls to avoid

The benefit is never automatic: without a claim you do not get it, and it does not go back before the month you apply.

The prefilled income may be incomplete: maintenance or income the fund does not know about must be added.

An intern cannot qualify on their stipend alone: they need a sufficiently paid job alongside.

An unreported change creates an overpayment, recovered from the benefit or from your other payments (family allowances, housing benefit).