What is ACH? ACH payments are electronic check payments that many businesses can use to expand their customer base. The Automated Clearing House, which is what ACH stands for, works similarly to a wire transfer but without actually being a wired payment. If you are looking for a secure way to process check payments from your customers, ACH is the way to go. These payments are resolved in just a couple of business days, which means that you will get your money faster than you might with traditional check payments. There are many benefits for business who accept ACH payments.