ACH  stands for Automated Clearing House. It is a payment system regulated by Nacha, a network of US-only financial firms. EFTs that use eChecks for recurrent bill payments are known as recurring electronic ACH bank transfer payments. They cover purchases related to:  Insurance premiums  Rent and lease payments  eCommerce  Loan payments  Software subscriptions   Any ongoing bills  All the above payments fall in the recurrent category and are generally made every month.