Before you start ACH direct debit over the phone, note that you can only do this if: As mentioned above, ACH authorization forms do not have a standard format or layout, but must contain several key elements. Once a customer has returned a completed paper authorization form to you, you must: Remember – All details to revoke an authorization, as well as the required notice period, must be provided on the original authorization form. The Recurring ACH Payment Authorization Form is a document that authorizes a business, owner, or merchant to deduct recurring payments from a customer`s bank account, as agreed by the parties. Payment will be debited at the end of the billing cycle on the date indicated by the account holder on the form. The document collects information such as personal information that correctly identifies the account holder/customer, billing information, bank account information, and specific written authorization for the merchant to collect payments. Payments are not stopped until a purchase has been made or the account holder has stopped recurring payments. The online ACH direct debit authorization uses digital authorization forms hosted on the Internet. As with their paper counterpart, online authorization forms do not have a standard format or layout, but must contain several key elements (see above). The rules for accepting ACH payments are regulated by NACHA. Obtaining an appropriate ACH authorization to process an ACH payment will protect your business from litigation.