Automated clearing house

An automated clearing house (ACH) is like an electronic mailbox that people and businesses use to send and receive money electronically. It's like how you might mail a check to somebody, but ACH moves the money electronically instead. When money is sent through the ACH, it goes through the bank like a normal check, but it is usually much faster. Nobody actually has to write a check or go to the bank to send the money - instead, it's all done electronically with computers.