An ACH transfer moves money in batches through the Automated Clearing House network and usually lands in one or two business days, often for free. A wire transfer moves money one payment at a time, typically settles within hours on the same business day, and usually carries a fee. The other big difference is reversibility: a wire is final once it is sent, while many ACH payments can be returned under set rules.
So ACH suits routine, lower-urgency payments like payroll and bills. Wires suit large, time-sensitive payments like a house closing.
ACH vs. wire at a glance
| Feature | ACH transfer | Wire transfer |
|---|---|---|
| How it moves | Batched, settled several times a day | One payment at a time, settled individually |
| Typical speed | Same day to two business days | Usually same business day, often within hours |
| Cost to the customer | Often free for consumers | Usually a fee; outgoing often costs more than incoming |
| Network limit | $1 million per Same Day ACH payment; standard ACH limits set by banks | Limits set by your bank |
| Can it be reversed | Some payments can be returned under Nacha rules | Generally final once processed |
| International | Mostly domestic | Domestic and international |
What is an ACH transfer?
ACH is the network behind direct deposit, autopay bills and most bank-to-bank transfers you start in an app. Banks collect payments into files and send them through an operator. That is either the Federal Reserve or a private operator. Then the network settles the net amounts between banks at set times.
The scale is large. According to Nacha’s 2025 figures, the network handled 35.2 billion payments worth $93 trillion last year. Same Day ACH accounted for 1.4 billion of those payments.
ACH comes in two directions. A credit pushes money out, as when an employer pays wages. A debit pulls money in, as when a utility collects a bill you authorized. That second type is why ACH has return rules: if someone pulls money without permission, there has to be a way to send it back.
How long does an ACH transfer take?
Standard ACH credits usually settle the next business day. Under Nacha’s funds availability rule, if the receiving bank gets a standard credit by 5:00 p.m. local time, the money must be available by 9:00 a.m. on the settlement date.
Same Day ACH is faster. The network settles same-day payments three times each banking day, at 1:00 p.m., 5:00 p.m. and 6:00 p.m. Eastern time. Credits from the first window must be available by 1:30 p.m. local time at the receiving bank, and credits from the second by 5:00 p.m.
Still, “how long” depends on your own bank too. Many banks have their own cutoff times. Some also hold incoming funds on new accounts. Weekends and federal holidays do not count as banking days. So a transfer started Friday evening often arrives Tuesday, even though the network itself is quick.
How wire transfers work
A domestic wire moves through a real-time gross settlement system. The best known is the Federal Reserve’s Fedwire Funds Service, which settles each payment individually and with finality. Banks use it for large and urgent payments.
Timing follows a fixed schedule. As of October 2026, Fedwire’s business day opens at 9:00 p.m. Eastern the evening before and closes at 7:00 p.m. Eastern, Monday through Friday. The cutoff for customer payments is 6:45 p.m. Eastern. Your bank will set an earlier internal cutoff, often in the afternoon.
International wires travel differently. Banks exchange payment messages over global networks and often pass the money through one or more correspondent banks. Each stop can add time and a fee, which is why an overseas wire can take several days and arrive short of the amount sent.
What you need to send each one
The details you give the bank are close, but not identical. Mixing them up is a common reason for delays.
For an ACH transfer, you need the recipient’s name, account number and routing number. You also choose checking or savings. Most apps then ask you to verify a new external account, often with two small test deposits. That check can add a day or two the first time.
For a domestic wire, you need the same basics plus the receiving bank’s name and address. Some banks use a separate routing number for wires, so ask the recipient for the wire number specifically. You will often sign a form or confirm by phone, since the bank cannot pull the money back later.
For an international wire, add the receiving bank’s SWIFT or BIC code. Many countries also use an IBAN, a longer account number with a country code. The purpose of the payment may be required too. If any detail is off, the payment can bounce back weeks later, minus fees.
Wire transfer fees and ACH costs
There is no single national price for either method. Banks set their own fees and publish them in a fee schedule. In general, consumers pay nothing for standard ACH transfers between their own accounts, and some banks charge for Same Day ACH.
Wires nearly always cost more. Outgoing wires usually carry a higher fee than incoming ones, and international wires cost more than domestic ones. On top of the bank’s fee, an international wire can include intermediary bank charges and a currency conversion markup built into the exchange rate.
For a business, these costs add up. If you pay suppliers weekly, the method you choose can change your monthly banking bill noticeably. Our breakdown of what a business bank account costs looks at these fees alongside monthly charges.
Limits, safety and what happens if something goes wrong
Same Day ACH has a network cap of $1 million per payment, in place since March 2022, according to Nacha. Payments above it settle the next day instead. Nacha has scheduled an increase to $10 million per payment in September 2027. Beyond that, your bank sets daily and monthly limits for both ACH and wires.
Protection differs sharply. Consumer ACH transfers fall under the Electronic Fund Transfer Act and Regulation E. If an unauthorized transfer shows up on your statement and you report it within 60 days, the bank must investigate, and your loss can be limited under 12 CFR 1005.6.
Domestic wires are different. They are mostly governed by state commercial law rather than Regulation E, and once processed they generally cannot be pulled back. International wires sent by consumers count as remittance transfers, which gives the sender 30 minutes to cancel after paying, under 12 CFR 1005.34, plus error resolution rights.
Fraud is the main risk with both methods. Scammers often pose as a title company, a vendor or a boss and send new payment instructions by email. In response, new Nacha fraud monitoring rules took effect in March and June 2026, requiring banks and business senders to watch for payments made under false pretenses. Even so, the best defense is simple: confirm new account details by phone, using a number you already have.
Which one should you use?
- Payroll, rent, bills and moving money between your own accounts: ACH, because it is cheap and predictable.
- A home purchase or other large same-day deadline: a wire, because it settles with finality the same day.
- Paying a supplier abroad: usually a wire or another cross-border service; compare total cost, including the exchange rate.
- Urgent, smaller payments: Same Day ACH or an instant payment service your bank offers, such as one connected to the Fed’s FedNow network.
For the bigger picture of how cards, ACH and wires fit together, see our explainer on how online payments work, or browse the money and business guide.
This article is general information, not financial advice. Check your bank’s fee schedule and cutoff times before sending money.
Frequently asked questions
Is ACH or wire safer?
Both run on secure bank networks. The difference is recourse: consumer ACH has dispute rights under Regulation E, while a wire is usually final, so a mistake or scam is harder to undo.
How long does an ACH transfer take?
Usually one to two business days. Same Day ACH can arrive the same afternoon if your bank submits it in time.
Why do banks charge more for wire transfers?
Wires settle individually and with finality, and banks staff checks for fraud and errors. International wires also pass through correspondent banks that may add charges.
Can I cancel a wire transfer?
Domestic wires generally cannot be cancelled once processed. For an international wire sent as a consumer, you have 30 minutes after payment to cancel in most cases.
Have a question about this topic? Ask in the comments below. Our editors read every comment and answer questions here, and we add useful answers to the guide.
Sources
- nacha.org/million
- nacha.org/rules/providing-faster-funds-availability
- nacha.org/news/same-day-ach-and-business-business-payments-propel-…
- nacha.org/rules/risk-management-topics-fraud-monitoring-phase-2
- frbservices.org/resources/financial-services/wires/operating-hours.html
- federalreserve.gov/paymentsystems/fedfunds_about.htm
- consumerfinance.gov/rules-policy/regulations/1005/6
- consumerfinance.gov/rules-policy/regulations/1005/34