[header] How to make ach payments [title] Learn the basics of ach. [step] The national automated clearing house association (nacha) was established in 1974 by several u.s. regional clearing houses, the entities that facilitate money transfers between financial institutions. [substeps] Ach was essentially an agreement among these organizations to streamline the process of clearing funds for transfer. 
The nacha now estimates that $40 trillion per year passes through the ach network. [title] Find out how ach transactions work.