Abstract: According to another embodiment, a method for invoicing and payments in an integrated supplier network may include: (1) receiving, at a supplier interface for a payments computer program, an invoice from a supplier; (2) receiving, at a buyer interface for the payments computer program, a payment allocation for the invoice, wherein the payment allocation may be associated with a supplier attestation for the supplier; (3) transferring, by the payments computer program, funds for the payment allocation to a liquidity pool, wherein the funds are commingled with other funds in the liquidity pool; (4) receiving, at the supplier interface, the supplier attestation, and a request to withdraw at least a portion of the funds for the payment allocation; and (5) retrieving, by the payments computer program, the portion of the payment allocation to a supplier account with the integrated supplier network.