Automated Clearing House
Also found in: Dictionary, Medical, Acronyms, Encyclopedia, Wikipedia.
Automated Clearing House (ACH)
A collection of 32 regional electronic interbank networks used to process transactions electronically with a guaranteed one-day bank collection float.
Automated Clearing House
An electronic funds transfer system allowing for the instantaneous transfer of money between users for payroll deductions, tax refunds, direct deposits, and more transactions. It is run by the National Automated Clearing House Association.