Next-Day ACH

Next-day ACH is an ACH transaction in the United States that settles on the business day after the payment file is submitted. It is the most common timing for payments over the Automated Clearing House (ACH) network, used for payroll, supplier payments, bill payments, subscription debits and transfers between a consumer's accounts at different banks. Businesses choose it because it is cheap and predictable, and because most of these payments do not need to arrive within hours.

Next-day ACH is usually contrasted with Same Day ACH, which settles on the day of submission for an extra fee, and with real-time systems such as RTP and FedNow, which settle individual payments within seconds. The ACH network is governed by the Nacha Operating Rules and operated by two ACH operators, the Federal Reserve's FedACH and The Clearing House's Electronic Payments Network.

An originator, such as an employer or a utility, sends payment instructions to its bank, the originating depository financial institution. The bank groups the instructions into an ACH file made up of batches of entries, each marked with an effective entry date requested by the originator. The bank submits the file to an ACH operator before one of the operator's processing deadlines.

The operator sorts entries by receiving bank and delivers them to each receiving depository financial institution. If the effective date is the next business day, the entries settle on that day: the operator posts debits and credits to the banks' settlement accounts at the Federal Reserve, and the receiving banks post the payments to their customers' accounts. For an ACH credit, such as a salary, the employee sees the funds on the settlement date. For an ACH debit, such as a mortgage payment, the money leaves the customer's account on that date.

Originators can also request settlement two business days ahead, which is common for payroll files sent early, and some entries settle later than requested if they miss cut-off times or fall before a weekend or bank holiday.

Typical uses include:

• Payroll and benefits. Employers send direct deposit files a day or two before payday so that wages arrive on time.
• Bill payments. Utilities, insurers and lenders collect recurring payments by debit on agreed dates.
• Business-to-business payments. Companies pay suppliers by ACH credit instead of cheques, often with remittance details attached.
• Account transfers. Consumers move money between their own accounts at different banks, and fintech apps fund accounts from linked bank accounts.
• Government payments. Tax refunds and benefit payments are sent in large volumes.

Nacha introduced Same Day ACH in phases from 2016, and added a third same-day settlement window in 2021. Same Day ACH lets eligible payments up to a per-payment limit, now $1 million, settle on the day they are sent, in exchange for a fee paid by the originating bank to the receiving bank. Next-day ACH carries no such fee and is usually the cheapest option for the originator.

The choice depends on urgency. Payroll that has been forgotten, emergency supplier payments and fast account funding often use Same Day ACH, while scheduled payments with known dates stay on next-day settlement. Both share the same file formats, rules and return processes.

ACH payments are not guaranteed at the time they are sent. A receiving bank can return an entry using an ACH return code, for example R01 for insufficient funds or R03 when no account can be found. Most returns must be made within two banking days of settlement, while consumers can dispute an unauthorised debit for up to 60 calendar days after it appears on their statement. As a result, businesses that release goods or funds as soon as a debit settles risk losses if the payment is later returned, and they monitor return rates, which Nacha also monitors against set thresholds.

Next-day ACH is also exposed to timing risk. Because settlement does not happen immediately, originators must manage cut-offs and holidays carefully, and receivers may not see funds until the morning of settlement. Fraudsters target ACH through account takeover and false payment instructions, which is why Nacha rules require originators to use fraud monitoring and to validate account details for certain debits.

Despite the growth of real-time payments, next-day ACH still carries a very large share of US electronic payment volume, because many recurring payments do not benefit from instant settlement and ACH is inexpensive to run at scale. Many banks and payment providers now offer a mix of next-day, same-day and real-time options, letting customers choose speed and cost for each payment.