ACH refers to the Automated Clearing House of the banking industry, which is a network that coordinates electronic payments and automated transfers of money.
ACH means that an electronic transfer has been made to or from your account by using your checking account records, on-bank statements or in your transaction history.
Using the Automated Clearing House, several forms of transactions are made, like direct deposits, bill payments and tax payments.
Whenever you see an ACH transaction on your bank statement, it means that either to or from your bank account an electronic transfer of money has been paid.