An external transfer moves money between bank accounts you own at different institutions. You start it inside one bank’s website or app, point it at an account you hold somewhere else using that bank’s routing number and your account number, and the funds travel over the ACH network, a wire system, or a real-time payments network to land in the other account. Standard external bank transfers are free at most major banks and settle in one to three business days. Faster options exist, and they come with real trade-offs in cost and in your ability to undo a mistake.
What You Need Before You Send
Two numbers do the work: the receiving bank’s nine-digit routing number, and your account number at that bank. The routing number identifies the institution; the account number directs the money to your specific account. You’ll also need to tell your bank whether the destination is checking or savings, because the receiving bank posts credits differently by account type.
Both numbers appear on a paper check (routing on the bottom left, account number next to it) and in the account details section of the receiving bank’s online banking. You can also call the receiving bank and ask.
Linking and Verifying the Outside Account
No bank will send money to an external account it hasn’t verified you own. Two methods are common. The older one is micro-deposits: your bank sends two small credits, usually a few cents each, to the outside account, and one to two business days later you log back in and type the exact amounts to confirm. The newer one is instant verification through a service like Plaid or a direct login to the outside bank through a secure portal, which links the accounts in minutes. Verification happens once per linked account.
The Three Ways Money Actually Moves
The route your transfer takes decides how fast it arrives, what it costs, and whether you can pull it back if something goes wrong.
ACH Transfers
ACH, the Automated Clearing House network, is the default. When you tap “transfer to another bank” inside your online banking, the payment almost certainly travels this way. It’s a nationwide batch-processing system that banks use to send electronic credits and debits to each other.1Federal Reserve Board. Automated Clearinghouse Services Depending on when you submit and your bank’s cutoff windows, an ACH payment can settle the same business day, the next day, or two business days out.2Nacha. The ABCs of ACH
Cost is the reason ACH dominates. Most major banks charge nothing for standard external ACH transfers in either direction. Some charge a small fee for expedited same-day processing. The current per-payment cap for Same Day ACH is $1 million, with an increase to $10 million scheduled for September 2027.3Nacha. Same Day ACH Per Payment Limit to Increase to 10 Million
Wire Transfers
Wires move through systems like Fedwire, operated by the Federal Reserve Banks, and settle one payment at a time rather than in batches. The Federal Reserve describes Fedwire as a real-time gross settlement system in which each payment is immediate, final, and irrevocable once processed.4Federal Reserve Board. Fedwire Funds Services That finality is the point, and it is also the risk. A wire is the right tool for a real estate closing. It’s overkill for shifting $500 into your savings account across town.
Wires also cost real money. A domestic wire typically runs $15 to $35 to send, and the receiving bank may charge another $0 to $20 on the other end. Online-initiated wires are usually cheaper than ones you set up at a branch.
Real-Time Payments
Two newer networks move money in seconds, any hour of any day. The Clearing House’s RTP network offers instant, final settlement 24 hours a day, 365 days a year, with a per-transaction limit of $10 million.5The Clearing House. Real Time Payments6Federal Reserve Board. FedNow Service7Federal Reserve Financial Services. FedNow Transaction Limit Increase
The catch is coverage. Your bank and the receiving bank both have to participate in the same network. RTP had over 1,130 participants as of late 2025, and FedNow’s roster is growing but doesn’t yet include every institution. If your bank supports one of these networks, you’ll usually see an “instant” or “real-time” option alongside standard ACH when you set up the transfer. Some banks include it free, others charge extra.
How Much You Can Send
Banks set their own external transfer caps. Daily limits on personal accounts commonly fall between $2,500 and $25,000, and monthly ceilings often land somewhere between $10,000 and $50,000, depending on the institution and account type. Business accounts generally get higher limits. Because these caps come from your bank rather than a federal rule, you can often call and request an increase, especially with a long account history or higher balances.
One old constraint worth clearing up: Regulation D used to cap savings account withdrawals and transfers at six per month. The Federal Reserve removed that limit in April 2020.8Federal Reserve Board. Federal Reserve Board Announces Interim Final Rule to Delete the Six-Per-Month Limit on Convenient Transfers From the Savings Deposit Definition in Regulation D Some banks still enforce a similar cap through their own account agreements, so check your terms if you plan to pull from savings often.
How Long It Takes
Timing depends on the type of transfer and when you send it.
- Standard ACH: one to three business days. Banks set daily cutoffs, often between 2:00 PM and 5:00 PM Eastern. Requests submitted after the cutoff start the next business day, and ACH doesn’t settle on weekends or Federal Reserve holidays.2Nacha. The ABCs of ACH
- Same Day ACH: settles the same business day if submitted before your bank’s cutoff. Not all banks offer it for consumer external transfers.
- Domestic wire: usually arrives within hours the same business day, if you submit before the wire cutoff.
- Real-time (RTP or FedNow): seconds, any time.
Once the money reaches the receiving bank, federal law requires it to be available for withdrawal no later than the next business day. Under the Expedited Funds Availability Act, funds received by wire or electronic payment must meet that next-business-day standard.9Office of the Law Revision Counsel. 12 USC 4002 Expedited Funds Availability Schedules The longer holds you sometimes hear about, two to five extra business days, apply to check deposits, not electronic transfers. Banks also cannot invoke the large-deposit exception for electronic payments.10NCUA. Expedited Funds Availability Act Regulation CC
Your Rights If Something Goes Wrong
External transfers between consumer bank accounts fall under the Electronic Fund Transfer Act and its implementing rule, Regulation E. That gives you real protection when a transfer processes for the wrong amount, goes to the wrong place, or was never authorized.
Unauthorized Transfers
If someone moves money out of your account without permission, how much you can be held responsible for turns on how fast you report it:
- Within two business days of learning about the problem: your maximum liability is $50.11Consumer Financial Protection Bureau. 12 CFR 1005.6 Liability of Consumer for Unauthorized Transfers
- After two business days but within 60 days of the statement showing the transfer: your maximum liability rises to $500.11Consumer Financial Protection Bureau. 12 CFR 1005.6 Liability of Consumer for Unauthorized Transfers
- After 60 days from that statement: you could be on the hook for the full amount of any unauthorized transfers that happen after the 60-day window, with no cap.
If a delay in reporting was caused by extenuating circumstances such as hospitalization or extended travel, the bank has to extend these deadlines to a reasonable period. Review your statements regularly and report anything odd right away.
Error Resolution
When you notify your bank of an error on an electronic transfer, the bank has 10 business days to investigate. It must report the results within three business days of finishing the investigation and correct any confirmed error within one business day.12eCFR. 12 CFR 1005.11 Procedures for Resolving Errors
If the bank needs more time, it can stretch the investigation to 45 days, but only if it provisionally credits your account for the disputed amount within the first 10 business days. You have full use of that provisional credit while the investigation continues. If the bank finds no error, it can reverse the credit, but it must give you notice and honor checks or preauthorized payments for five business days after that notice so you can adjust.12eCFR. 12 CFR 1005.11 Procedures for Resolving Errors
Wires Are Different
ACH transfers can generally be reversed or recalled through the banking system, at least for a limited window. Wires cannot. Fedwire processes each payment as immediate, final, and irrevocable.4Federal Reserve Board. Fedwire Funds Services If you wire money to a scammer or type the wrong account number, your bank can send a recall request to the receiving bank, but that’s a polite ask. The receiving bank has no obligation to send the money back, and if it’s already been withdrawn, there may be nothing to recover.
Scammers know this, which is why wire transfers are their preferred payment method. A request for a wire to someone you don’t know personally, especially under time pressure, is a warning sign. Legitimate businesses and government agencies almost never demand a wire from a consumer. If you’re buying a home and receive wiring instructions by email, call the title company or attorney using a number you already have before sending anything. Real-time payments on RTP and FedNow carry similar finality, so the same caution applies.
Large Transfers and Reporting
Big electronic transfers can trigger regulatory reporting even when everything about them is legitimate. Currency Transaction Reports apply only to physical cash transactions over $10,000, not to electronic transfers between accounts, so moving $50,000 electronically from one bank to another does not generate a CTR.13FFIEC. Currency Transaction Reporting Banks are separately required to file a Suspicious Activity Report on any transaction of $5,000 or more if they suspect the funds are connected to illegal activity or structured to avoid reporting.14Financial Crimes Enforcement Network. FinCEN SAR Electronic Filing Instructions You won’t be told if a SAR is filed, and a filing does not mean you’ve done anything wrong.
The one thing to avoid is structuring: splitting a large transfer into smaller ones specifically to stay below a reporting threshold. Structuring is a federal crime regardless of whether the underlying money is clean. If you need to move a large amount, move it in one transfer and keep documentation of where the money came from in case your bank asks.
Sending a Transfer Once the Account Is Linked
After the outside account is linked and verified, the transfer itself takes about a minute:
- Log in to your bank’s online portal or mobile app.
- Go to transfers and pick the option for external accounts (sometimes labeled “transfer to another bank” or similar).
- Choose the linked account, and enter the dollar amount.
- Pick your speed if the bank gives you options: standard ACH, same-day, or real-time.
- Review and confirm. The bank will show a confirmation number or email one. Save it as your receipt.
For payments you make on a schedule, most banks let you set up recurring external transfers on a weekly, biweekly, or monthly basis. That’s useful for regularly funding a high-yield savings account or making loan payments at another institution without having to remember each time.