The NAN code, for National Affiliation Number, is the unique identifier assigned by the CRCESU to each provider who accepts pre-financed CESUs. Its composition follows a precise format: a sequence of up to seven digits, followed by an asterisk and a key digit (example: 0012345*1). Knowing how to quickly locate it is essential for adding a provider to a payment platform, tracking reimbursements, and ensuring proper traceability of operations between employers, employees, and issuing organizations.
NAN Code and CESU Beneficiary Code: Two Identifiers Not to Be Confused
A common confusion slows down processes: the NAN code and the CESU Ticket beneficiary code do not refer to the same thing and do not concern the same people. Mixing the two blocks affiliation or reimbursement.
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| Criterion | NAN Code (National Affiliation Number) | CESU Ticket Beneficiary Code |
|---|---|---|
| Assigned to | The provider (employee, company, association) | The beneficiary (individual employer or user) |
| Issued by | CRCESU | Issuer of vouchers (Edenred, Sodexo, Up, etc.) |
| Format | Up to 7 digits + asterisk + 1 digit | 8 digits |
| Main utility | Collection and reimbursement of pre-financed CESUs | Access to the beneficiary space, order tracking |
| Where to find it | CRCESU mail, personal CRCESU space, employment contract, invoices | Welcome letter from the issuer |
The beneficiary code is used to manage vouchers from the employer or funder side. The NAN code is exclusively used on the provider side to trace each reimbursement operation. An individual looking to pay for their home help does not need the NAN code: it is the provider who holds it.
To understand in detail where to find the NAN code based on your situation, several channels are available, from postal mail to the online CRCESU space.
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Locating Your CESU NAN Code: The Four Verified Channels
The CRCESU communicates the NAN code through several channels. In case of loss, not all are equal in speed.
- Postal mail from CRCESU: sent after confirmation of affiliation, it contains the complete NAN code. It is the reference document, but it can sometimes take several days to receive or find it in archives.
- Online personal CRCESU space: on the login page of the site espacepersonnel.cr-cesu.fr, the “I forgot my NAN code” section allows recovery by email if an address is registered on the account. Without an associated email address, you must contact customer service.
- Employment contract and invoices: the NAN code appears on the contractual documents between the provider and the employer. Checking CESU pay slips or service invoices is often sufficient.
- Issuer platforms (Edenred+, Bimpli, Up): some allow searching for a provider directly by their NAN code. If the provider is already affiliated, their number appears in the provider search results.
The fastest channel remains the online space of CRCESU, provided you have a valid email address linked to the account. However, if no address is registered, only a call to CRCESU customer service can resolve the situation.
Role of the NAN Code in the Traceability of e-CESUs
The gradual transition from paper CESU to dematerialized CESU (e-CESU) has strengthened the function of the NAN code beyond simple reimbursement. This number is now used to secure dematerialized flows and automate certain controls on payment operations.
Each collection, whether paper or electronic, is associated with the provider’s NAN. This association allows tracking all operations related to vouchers for the same provider, regardless of the number of employers who pay them in pre-financed CESUs.
Traceability and Prevention of Reimbursement Errors
The unique NAN per provider avoids duplicates in the reimbursement circuit. A home employee working for three different employers retains a single NAN code. All reimbursement operations converge to this unique number, simplifying accounting tracking and reducing the risk of error.
This traceability is also presented as a lever against fraudulent uses: each collected voucher is linked to an identified provider, making anomalies easier to spot in the CRCESU system.
Affiliation to CRCESU: Steps to Obtain Your NAN Code
A provider who has never received a pre-financed CESU must first affiliate with the CRCESU to obtain their NAN code. Registration is done directly online at espacepersonnel.cr-cesu.fr.
Case of Employees Employed by an Individual
If the employee is directly employed by an individual (excluding an agency), the employer must first declare the salary and pay social contributions via Urssaf service Cesu or Pajemploi. Affiliation to CRCESU is a separate process from the Urssaf declaration: the former concerns the reimbursement of vouchers, the latter social obligations.
Case of Service Provider Companies and Associations
Home service structures (service companies, agency associations) affiliate as a legal entity. A change of business name or bank details requires sending proof to CRCESU by mail or through the channels indicated on their website.
Once the affiliation is confirmed, the NAN code is permanently assigned. It does not change, even if the account information is modified. Only a significant change in legal status could lead to a new assignment.
Searching for a Provider by NAN Code on Payment Platforms
Some platforms like Edenred+ allow beneficiaries to find a provider by directly entering their NAN code in the search engine. This feature avoids the need to re-affiliate a provider already registered with CRCESU.
If the entered NAN code corresponds to an existing provider, their information appears and they can be added to the beneficiary’s list of providers. If the code returns no results, the provider is likely not yet affiliated and will need to register with CRCESU.
The NAN code remains the technical pivot of the entire pre-financed CESU circuit. Keeping it in an accessible place (online space, copy of the affiliation letter, mention on invoices) avoids processing delays during reimbursements or additions on new personal service platforms.