Inter-network electronic billing

A method and system for electronic billing across unassociated electronic bill presentment networks is provided. Each network includes a billing service provider. A request to receive an electronic bill from a biller not associated with a first network is received by a first billing service provider. A request to determine a network with which the biller is associated is transmitted by the first billing service provider. In response to this determination request, information indicating that the biller is associated with a second network is received. An activation instruction to receive electronic bills is transmitted from the first billing service provider to a second billing service provider which is a part of the network with which the biller is associated.