ACH vs wire at a glance
| ACH transfer | Wire transfer | |
|---|---|---|
| How it moves | In batches, through the ACH Network | One at a time, through a system such as Fedwire |
| Speed | Same day, next day or two business days | Domestic: usually the same business day. International: 1 to 5 business days at the bank we checked |
| Cost | $0.50 to $2.50 per payment to send, for a business, at the providers we checked | About $25 to $35 to send a domestic wire and $15 to receive one, at the banks we checked |
| Can it be undone? | Can be returned or reversed in set cases | Final once processed |
| Dollar limit | Same Day ACH: $1 million per payment ($10 million from September 17, 2027). Standard ACH: no network limit | No per-payment cap in the Fedwire pages we checked |
| Federal consumer protection | Regulation E, for personal accounts | Domestic wires: not covered by Regulation E. International wires sent by consumers: separate remittance transfer rules |
| International | Limited | Yes, using a SWIFT code |
| Best for | Payroll, bills, regular supplier payments | Large, urgent or one-time payments, such as a house closing |
How each one works
ACH. The Automated Clearing House is a batch system. Nacha calls it a store-and-forward system. Your bank groups your payment with many others, sends the batch to an ACH Operator, and the banks settle at fixed times during the business day. Nacha describes ACH as a low-cost alternative to wire transfers.
Wire. A domestic wire usually goes through the Fedwire Funds Service, run by the Federal Reserve Banks. Fedwire is a real-time gross settlement system. Each payment is settled on its own, at once. The Federal Reserve describes these transfers as immediate, final and irrevocable once processed.
Speed
A wire is the faster choice on a business day. Fedwire’s business day runs from 9:00 p.m. Eastern Time the evening before until 7:00 p.m. ET. Transfers for customers must be in by 6:45 p.m. ET. Your own bank will set an earlier cut-off. Bank of America, for example, lists 5 p.m. Eastern.
ACH has three speeds.
- Same Day ACH settles at 1:00 p.m., 5:00 p.m. or 6:00 p.m. ET.
- Next-day ACH settles at 8:30 a.m. ET on the next banking day.
- Two-day ACH is allowed for credits only.
Neither system settles on weekends or Federal Reserve holidays. See how long an ACH transfer takes.
Cost
The gap in cost starts at the network. In 2026 the Federal Reserve charges banks $0.0035 for an ACH payment. For a wire it charges up to $0.97 before volume discounts, plus a monthly fee. The price a bank charges its customer is far higher.
These are two banks’ published prices, checked on October 2, 2026. They are examples, not rules.
| Bank | Send a domestic wire | Receive a wire | Send an international wire |
|---|---|---|---|
| Chase, business accounts (schedule effective June 14, 2026) | $25 online, $35 with a banker | $15, or $0 if it was sent from Chase | $40 online in US dollars, $50 with a banker |
| Bank of America | $30 | $15 | $45 in US dollars |
For ACH, the same Chase schedule charges a business $2.50 per payment for the first ten a month and $0.15 after that. Bill-payment tools charge about $0.50. More examples are in ACH fees.
Can the payment be undone?
This is the biggest practical difference.
A wire is final. Once the Federal Reserve processes it, the receiving bank has the money. If you were tricked into sending it, call your bank at once. Recovery is not guaranteed.
An ACH payment has rules for going backward.
- The receiving bank can return a debit: within two banking days for most return reasons, and up to 60 days when a personal customer says it was not authorized.
- A person can dispute an unauthorized debit on a personal account for 60 days.
- A sender can reverse its own mistake, such as a duplicate or a wrong amount, within five banking days.
These rules are a safety net, not a guarantee. A reversal can fail if the money has already been withdrawn. Read ACH reversals and ACH disputes.
For a business collecting money, the same rules cut the other way. A wire you receive is yours. An ACH debit you collect can still come back.
Consumer protection
ACH payments to and from personal accounts are electronic fund transfers under Regulation E. That law gives a person the right to dispute errors and unauthorized transfers.
Wires are different. Regulation E’s main rules exclude transfers sent through Fedwire or a similar wire system, so its error and dispute rights do not apply to a domestic wire.
There is one exception. When a consumer sends more than $15 abroad, the payment is a remittance transfer under a separate part of Regulation E. With a provider covered by that rule, the sender has 30 minutes after paying to cancel, if the money has not yet been picked up or deposited. The sender also has 180 days to report an error such as the wrong amount arriving or the money arriving late.
Limits
Standard ACH has no general dollar limit in the Nacha material we checked. Same Day ACH is limited to $1 million per payment until September 16, 2027, and to $10 million from September 17, 2027.
The Fedwire pages we checked state no per-payment cap. The Federal Reserve’s fee schedule even has surcharges for transfers over $10 million and over $100 million.
In practice your own bank sets the limit you meet, for both. See ACH limits.
International payments
ACH is a US network. A payment that is part of an international transaction must use the IAT type, and an IAT payment cannot be sent as Same Day ACH. Ask your bank whether it offers IAT payments. See international ACH transfers.
International wires are common. They use a SWIFT code in place of a routing number, and at the banks above they cost more than a domestic wire.
Fraud risk
Criminals target both. The FBI defines business email compromise as a scam aimed at businesses that regularly make wire transfer payments, and its Internet Crime Complaint Center groups “Wire Transfer/ACH” together as a top reported transaction type.
The defense is the same for both: before you send money to new bank details, call the person on a number you already know. See ACH fraud prevention.
When to use which
Choose ACH when
- the payment is regular, such as payroll, rent or supplier invoices
- one or two business days is fast enough
- you want the lower cost
- you are collecting money, because only ACH lets you pull a payment with the customer’s authorization
Choose a wire when
- the money must arrive today and be final, such as a property closing
- the amount is larger than your bank’s ACH limit
- the payment is going abroad. Allow 1 to 5 business days
What about instant payments?
Two newer US networks move money in seconds, at any hour, every day of the year.
- RTP, run by The Clearing House. The limit is $10 million per payment since 2025.
- FedNow, run by the Federal Reserve. Its network limit rose from $1 million to $10 million in November 2025. Banks may set lower limits.
Both only work when the sending bank and the receiving bank have joined the network. Nacha describes Same Day ACH and real-time payments as complementary options. See instant ACH transfer for how each one compares with ACH.
Common mistakes
- Asking for “ACH wire” details. They are two different payments. Ask which one the other party wants.
- Using the wrong routing number. A bank’s wire routing number can differ from its ACH one. Check an ACH number with the routing number checker.
- Wiring money to details that arrived by email. A wire is final. Confirm by phone first.
- Paying for a wire when Same Day ACH would do. Ask your bank what it charges for each.
- Treating a collected ACH debit as final on day one. Wait for the return window to pass before you ship high-value goods.