Automated Clearing House Network
Abbreviated as ACH, it is a network of batch processing systems for clearing electronic payments for participating financial agencies in the United States. Transactions received by a financial agency are stored and processed in batches, rather than in single transactions by the ACH network. The ACH network is governed by The Electronic Payments Association (NACHA). This industry association serves serves as both an industry trade association and the administrator of the Automated Clearing House (ACH) Network.