To accept eCheck and ACH payments, you will need to obtain your customers authorization to electronically debit their checking account.
For electronic recovery, written authorization is best but notification is required. You can email this notification or display it on your web site. The basic notification states that the state allowed fee will be changed on NSF items.
A best practice is to notify your customer of electronic re-presentment of NSF items when they sign up for ACH. For checks by phone, your best practice is a confirmation email and notice.
Here are Sample ACH Authorization forms:
