The National Automated Clearing House Association, or NACHA, is the organization that establishes standards and rules followed by financial institutions for transferring payments. NACHA is implementing Same Day ACH for debits beginning in September.
What does this mean for you? If you authorize an ACH payment, it could be debited from your account the same day. Therefore, it's important to ensure available funds are in your checking account when you write a check or initiate an ACH withdrawal to avoid overdraft fees.