What Is an ACH Payment?
An ACH payment is an electronic transfer of funds processed through the Automated Clearing House (ACH) network, a batch-based system that moves money between US bank accounts. ACH is one of the most common ways businesses pay suppliers, run payroll, and collect customer payments, because it is significantly cheaper than wire transfers or paper checks.
How ACH Payments Work
ACH payments are processed in batches rather than individually and in real time. A business submits payment instructions to its bank, which groups them with other transactions and sends them through the ACH network to the recipient's bank. This batch processing is why ACH payments typically take one to three business days to settle, rather than clearing instantly.
ACH vs. Wire Transfer
Wire transfers move money individually and typically settle same-day, but cost significantly more per transaction and are harder to reverse if there is an error. ACH payments are cheaper and well suited to routine, recurring payments like supplier invoices and payroll, but are not the right choice when funds need to arrive immediately.
ACH Payments in Accounts Payable
Most businesses have shifted supplier payments from paper checks to ACH because it is faster, cheaper, and easier to track. The tradeoff is that ACH payments still need to be reconciled against the invoices they are paying, confirming the right amount went to the right vendor, which becomes a manual matching task if payment data and AP records live in separate systems.
Frequently Asked Questions About ACH Payment
1. What is an ACH payment?
An ACH payment is an electronic transfer processed through the Automated Clearing House network, a batch-based system used to move money between US bank accounts for purposes like supplier payments, payroll, and bill collection.
2. How long does an ACH payment take to process?
Most ACH payments settle within one to three business days, since they are processed in batches rather than individually in real time. Same-day ACH is available in some cases for an additional fee.
3. What is the difference between ACH and a wire transfer?
Wire transfers move funds individually and typically settle the same day but cost more per transaction. ACH payments are processed in batches, cost less, and are better suited for routine, recurring payments rather than urgent transfers.
4. Are ACH payments secure?
ACH payments run through a regulated network with standardized security requirements, but like any electronic payment method, they are still a target for fraud, particularly through fraudulent changes to a vendor's bank account details on file.
5. Why do businesses prefer ACH over paper checks for supplier payments?
ACH is faster to process, cheaper per transaction, easier to track and reconcile, and removes the manual work of printing, mailing, and depositing physical checks.
