
The Pajemploi Siret number is an administrative identifier assigned to each parent who employs a licensed childminder or a home caregiver. This number, consisting of 14 digits, is automatically generated by Urssaf through the Pajemploi center after the file has been validated by the CAF. It is used to declare the wages paid, calculate social contributions, and receive the complement of free choice of childcare (CMG).
Pajemploi Siret and Business Siret: a common confusion
The Pajemploi Siret has nothing to do with the Siret of a self-employed person or a company. A parent employer is not a business owner in the commercial sense. This number is assigned solely to identify the household as an employer of childcare staff with Urssaf.
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This distinction regularly causes issues. Some parents look for their Siret number in business directories like Infogreffe, where it will never appear. The Pajemploi Siret is exclusively found on documents sent by the Pajemploi center (registration letter, online space, employee pay slips).
To know exactly where to find this information and obtain their Pajemploi Siret number without wasting time, the starting point is always the Pajemploi online account, accessible from the Urssaf website.
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CMG application to the CAF: the mechanism that triggers the assignment of the Siret
It is the CMG application to the CAF that initiates the Pajemploi registration process. The parent does not need to contact Urssaf directly or fill out a specific form to obtain this number. The administrative chain works as follows:
- The parent submits a request for the free choice of childcare supplement to their CAF, providing information about the employee (licensed childminder or home caregiver) and the employment contract.
- The CAF validates the right to CMG and automatically forwards the file to the national Pajemploi center, managed by Urssaf.
- Pajemploi creates the employer account, assigns the Siret number, and sends the login credentials to the parent by postal mail.

The time between the CMG request and the receipt of Pajemploi credentials varies depending on the periods. The September and January intakes, when new hires for childcare are numerous, extend processing times.
Supporting documents and conditions for Pajemploi registration
The CMG application assumes that the child being cared for is under 6 years old. The parent must provide the CAF with documents related to their employment contract with the licensed childminder or home caregiver: employee identity, approval number (for a childminder), start date of the contract, and expected remuneration.
A lesser-known point: if the parent employs a home caregiver rather than a childminder, the conditions for reimbursement differ. The home caregiver works at the parent’s home, which alters the calculation of the CMG and the ceilings for covered contributions.
The Pajemploi number is assigned per household and per type of care, not per employee. If the parent changes childminders, the Siret remains the same. However, a move or a change of CAF may require an administrative update.
Common blockages and recourse in case of delay
Several situations delay the obtaining of the Pajemploi Siret. An incomplete CAF file (missing document, inconsistency regarding family situation) blocks transmission to Urssaf. A parent who forgets to declare a change in professional situation may also see their CMG request suspended.
In case of error or prolonged blockage, it is possible to appeal to the CAF amicable appeal commission within two months from the notification of the decision. This procedure allows contesting a refusal or correcting a poorly handled file, even when the error arises from a misinterpretation of the household situation.
For parents who are not comfortable with online procedures, France Services spaces provide concrete support. These offices gather agents trained in CAF, Urssaf, and France Travail procedures. They can assist in creating the CAF account, applying for CMG, and following up on the file until the Pajemploi number is received.
First Pajemploi declaration: what to do once the Siret is received
Upon receiving the Pajemploi letter containing the credentials, the parent must activate their online space on the Urssaf Pajemploi site. This activation allows for the first monthly salary declaration paid to the childminder or home caregiver.
The declaration must be made each month, between the 25th of the current month and the 5th of the following month. It triggers the calculation of social contributions, the generation of the employee’s pay slip, and the payment of the CMG into the parent’s bank account.
A missed or late declaration can lead to the temporary suspension of CMG payments. The Pajemploi service also offers online simulation tools to estimate the actual cost of care after deducting aids, which facilitates budget tracking even before the first hire.
The Pajemploi Siret remains active as long as the parent employs a declared employee. In case of termination of the contract with the last childminder, the account goes dormant but the number is retained. A new hire reactivates the account without needing to request a new Siret.