Why ACH is not instant
The ACH network is a batch system. Nacha, the organization that writes the ACH rules, calls it a store-and-forward system. Your bank groups your payment with many others and sends the batch to an ACH Operator. The banks then settle at fixed times.
- The Federal Reserve’s ACH service settles four times each business day: at 8:30 a.m., 1:00 p.m., 5:00 p.m. and 6:00 p.m. Eastern Time.
- Nothing settles on weekends or Federal Reserve holidays.
- A payment sent after your bank’s cut-off time waits for the next banking day.
So an ACH payment always waits for the next settlement time.
How fast each payment type is
| Payment type | Speed | Hours | Limit per payment | Who can use it |
|---|---|---|---|---|
| Standard ACH | The next banking day. Some credits take two banking days | Banking days only | No general network limit in the Nacha material we checked | Reaches all US bank and credit union accounts |
| Same Day ACH | The same banking day, at 1:00 p.m., 5:00 p.m. or 6:00 p.m. Eastern Time | Banking days only. The last deadline for banks is 4:45 p.m. ET | $1 million. $10 million from September 17, 2027 | Every US bank must accept it. Ask your bank or provider whether it sends it |
| RTP | Within seconds | Any hour, every day of the year | $10 million | Only when both banks have joined the RTP network |
| FedNow | Within seconds | Any hour, every day of the year | $10 million network limit. Banks may set lower limits | Only when both banks have joined the FedNow Service |
| Wire transfer | Usually the same business day within the US | Business days. Fedwire closes at 7:00 p.m. ET and is closed on weekends and holidays | No per-payment cap in the Fedwire pages we checked | Sent through a bank that offers wires |
Your own bank’s limits and cut-off times can be lower and earlier than the ones in this table. More detail is in how long an ACH transfer takes, Same Day ACH, ACH limits and ACH vs wire transfer.
Real-time payments vs ACH
RTP and FedNow are the two US networks built for instant payments. They are separate from the ACH network.
- RTP is run by The Clearing House. It says the network is available around the clock, including bank holidays, weekends and after hours.
- FedNow is run by the Federal Reserve. It says the service lets people and businesses send and receive payments within seconds at any time of the day, on any day of the year.
| ACH | RTP and FedNow | |
|---|---|---|
| How a payment moves | In batches | One payment at a time |
| When it settles | At fixed times on banking days | Within seconds, any day |
| Which accounts it reaches | All US bank and credit union accounts | Only accounts at banks that have joined |
| Who runs it | The Federal Reserve and The Clearing House, as the two ACH Operators | The Clearing House runs RTP. The Federal Reserve runs FedNow |
The Federal Reserve says there is no FedNow app. A bank or credit union offers instant payments inside its own app or website, and you may never see the name FedNow.
It also says that, at first, you can only send and receive FedNow payments with people and businesses whose banks have also signed up.
Nacha describes Same Day ACH and real-time payments as complementary options.
When a provider says instant ACH
The ACH network has no instant payment. Its fastest service is Same Day ACH.
If a provider advertises instant ACH, ask what it means: a faster payout, or a different network.
Instant with no verification
Some people look for an instant ACH transfer online with no verification. For a debit that a consumer authorizes online, the ACH rules do not allow that.
Since March 19, 2021, a business that takes ACH debits that consumers authorize online must check the account the first time it uses an account number, and again when the number changes. Nacha says the business must, at a minimum, find out that the account is open and can take ACH payments.
A prenote, micro-deposits or a validation service all count. A prenote takes a few banking days. Micro-deposits depend on how quickly the customer confirms the amounts. Nacha’s guidance also mentions instant verification services. See ACH account verification for what each method proves, and ACH fraud prevention for why the check matters.
What faster payments cost: one bank’s prices
These prices are from Chase’s fee schedule for business accounts, effective June 14, 2026. We checked it on October 2, 2026. They are an example, not a rule, and other banks price differently.
| Service | Price to send |
|---|---|
| Standard ACH payment | $2.50 each for the first 10 a month, then $0.15 each |
| Same Day ACH | 1% of the amount or $25, whichever is less |
| Real Time Payments | 1% of the amount or $25, whichever is less |
| Domestic wire, sent online | $25 |
What to ask your bank
- Do you offer Same Day ACH on my account? What is your cut-off time?
- Have you joined RTP or FedNow? Can I send payments, or only receive them?
- What do you charge for Same Day ACH, a real-time payment and a wire?
- What is my limit for each one?
- When can the receiver use the money?
- Can the payment be undone if I make a mistake?
Which one to choose
| You need | Look at |
|---|---|
| A regular payment, where a day or two is fine | Standard ACH |
| Money to settle today, on a banking day | Same Day ACH, or a wire |
| Money to arrive at night, on a weekend or on a holiday | RTP or FedNow, if both banks offer them |
| To collect money from a customer’s account | An ACH debit. See how to accept ACH payments |
Common mistakes
- Expecting ACH to arrive in seconds. Only RTP and FedNow do that.
- Reading “instant” as a fact about the network. Ask the provider which network carries the payment and when the money can be used.
- Sending a same-day payment after the cut-off. It goes out on the next banking day.
- Assuming the other bank has joined RTP or FedNow. Both banks must be on the same network.
- Skipping the account check to save time. For debits that consumers authorize online, the ACH rules require it the first time you use an account number.