Contract Invoice Payment Process

Postal Service Supply Management is responsible for important components of the contract invoice payment process, which includes invoice submission, certification, and approval for payment. Suppliers can submit invoices manually or electronically as specified in the contract. Prior to payment, invoices must adhere to submission requirements and be certified. If the invoice does not meet submission requirements, the invoice certifier is required to reject it.The Postal Service is subject to the Prompt Payment Act, which requires payment of an invoice subject to the contract payment terms after receipt of goods and services. Payment terms specifying the timeframe for making payments are included in Postal Service contracts.