Without prejudice to the provisions specific to metropolises, urban communities and conurbation communities, when a public establishment of inter-municipal cooperation provides a service on behalf of a local authority, another public establishment of inter-municipal cooperation or a mixed syndicate, the related expenditure is recorded in a budget annexed to the budget referred to in articles L. 5212-18 to L. 5212-21, L. 5214-23, or L. 5216-8 as appropriate. The revenues of the annexed budget include the proceeds of the fees or taxes corresponding to the service provided and the contributions of the local authority or establishment for the benefit of which the service is provided.
These provisions do not apply to the carrying out of an investment on behalf of a local authority or another public establishment for inter-municipal cooperation, which is recorded in the budget and accounts as an operation under mandate. In this case, a public establishment for inter-municipal cooperation that is simultaneously carrying out investments of the same nature on behalf of several public authorities or public establishments for inter-municipal cooperation may award a single public contract.