Abstract: A method for processing business-to-business payments includes: storing a plurality of payment rules, each rule including data related to a payment scheme including an institution identifier and payment amount; receiving, from a first financial institution, a notification of payment to be made by a buyer to a seller, the notification including a first institution identifier associated with the first financial institution, a second institution identifier associated with the seller and/or a second financial institution associated with the seller, and a transaction amount; forwarding, to the second financial institution, a payment notification, the notification including the transaction amount and indicates at least one of: the first financial institution, the buyer, and the seller; identifying a specific payment rule where the institution identifier corresponds to the first institution identifier; and processing a payment to the first financial institution based on the payment amount included in the specific pa