Moving money between banks: ACH and wire transfers, limits and timing

How an ACH transfer moves

ACH payments pass through three hands. The originating bank sends payment files to an ACH operator, either the Federal Reserve or The Clearing House, which sorts them and routes each one to the receiving bank, which posts the money. Nacha writes the network rules but does not process payments. [1] An ACH credit pushes money out of the account that starts it; an ACH debit pulls money with the account holder's authorization. Nacha says credits can settle the same day, the next banking day or in two banking days, debits the same or next banking day, and about 80% of all ACH payments settle in one banking day or less. [1]

Same Day ACH is the faster lane: Nacha says these payments can be sent and received within hours on the same business day, and lists account-to-account transfers among its uses. Its per-payment limit was raised to 1 million dollars in 2022, and Nacha says it is increasing to 10 million dollars. [2] Whether your bank uses Same Day ACH for a consumer transfer is the bank's choice; neither bank's transfer pages we read promise it.

What each bank documents

Read on 30 October 2026. Blank spots in the banks' published material are marked rather than filled in.

ACH or wire: how to choose

ACH is the default for moving your own money: Ally charges 0 dollars for standard or expedited transfers [9], Capital One's pages list no ACH transfer fee, and it is fine when a day or two does not matter. A wire costs 20 to 30 dollars at these banks [5][6] but settles the same business day for the receiver at both [5][7] and, at Ally, can be scheduled up to 30 days ahead. [6] The catch is finality: Ally says submitted wires cannot be modified and cancellation needs a phone call with no guarantee [6], and the CFPB's advice for a wired-away closing payment is to request a wire recall immediately, which signals how hard recovery is. [8]

• Use ACH for routine moves between your own accounts, savings top-ups and anything not due this week.
• Start the ACH at the bank that has the money if you want to control the timing; Capital One says its outgoing transfers take one to three business days. [3]
• Use a wire when a third party needs guaranteed same-day funds, such as a home closing.
• Check limits early: Capital One does not publish its ACH limits [5], and a new Ally customer faces a $25,000 wire cap for 90 days. [6]
• Never use Zelle for large one-off payments to businesses you do not know; Capital One and Ally say it has no purchase protection, as our Zelle guide explains.

Worked example: a 25,000 dollar down payment due Friday

A synthetic buyer has 25,000 dollars in Ally savings and must deliver it to a title company for a Friday closing. She learns on Monday that funds must arrive by wire. Her plan: confirm wiring instructions by calling the settlement agent at a number from her signed paperwork, not from an email, as the CFPB advises [8]; submit the Ally wire on Wednesday before 3 pm ET so it is reviewed that day and sent by 6 pm ET if verified [6]; and keep Thursday as a buffer. The fee is 20 dollars, and the wire counts as one of the savings account's ten allowed withdrawals per statement cycle. [6]

One trap: if her first Ally account is less than 90 days old, Ally limits wires to 25,000 dollars, and she is right at that cap; she should call on Monday to ask about an exception rather than discover the limit on Wednesday. [6] The ACH alternative, pulling the money into her Capital One account and wiring from there for 30 dollars [5], is harder to time: a transfer set up at Capital One before 5 PM ET posts the same business day but is subject to standard hold times [3], and neither bank's pages say how long that hold will be, so it would not fit a Monday-to-Friday window safely.

Checklist before any large transfer

• Link external accounts well before you need them; Ally trial deposits can take up to 3 business days. [6]
• Find your limit in the bank's transfer screen before the deadline week. [5][10]
• Note the cutoff: 5 PM ET for incoming transfers set up at Capital One [3], 3 pm ET for Ally outgoing wire review. [6]
• Remember weekends and federal holidays are not business days. [3]
• Verify wiring instructions by phone using a number you already have. [8]
• If you wired money to a scammer, call your bank for a recall at once and file at ic3.gov. [8]

What we could not verify

Neither bank publishes its ACH dollar limits on the pages we read, Capital One's public pages we read do not list its outgoing wire cutoff or limits, and Ally's pages do not state how long its standard and expedited outbound ACH transfers take. Ask the bank or check the transfer screen; do not rely on figures quoted on forums.