The Federal Reserve's FedNow Service settles instant payments directly in participants' master accounts at the Reserve Banks, 24 hours a day, every day of the year, with no batch window and no next-day posting. Since November 12, 2025 the network limit on a customer credit transfer has been $10 million, and every participating institution may set a lower ceiling of its own.
That single sentence contains most of what separates FedNow from the rails it sits beside. The rest is mechanics: which messages move, how long a receiving bank has to answer, when the money stops being reversible, and who is allowed to join at all. This primer walks through the published design as the Board and the Reserve Banks have documented it.
What is the FedNow Service, and who is allowed to participate?
The FedNow Service is an interbank settlement service operated by the Federal Reserve Banks that clears and settles instant payments in central bank money. It is a rail, not a consumer product: the payment app a customer sees belongs to a bank or credit union, not to the Federal Reserve.
Participation is narrow by design. In its August 2020 Federal Register notice setting out the service details (85 FR 48522), the Board stated the service would be "available only to institutions eligible to hold accounts at the Reserve Banks." Nonbank payment companies reach the rail only through a sponsoring depository institution or a service provider, not on their own account.
The service went live in July 2023. In its launch announcement, the Board said 35 banks and credit unions plus the U.S. Department of the Treasury's Bureau of the Fiscal Service were participating at go-live, supported by 16 service providers. Chair Jerome H. Powell said the Federal Reserve "built the FedNow Service to help make everyday payments over the coming years faster and more convenient."
Settlement itself happens where the Reserve Banks already keep the books. The Board rejected proposals to build separate settlement accounts, writing that the service "will settle payments in master accounts held at the Reserve Banks" rather than adding what it called significant operational complexity.
How does a FedNow payment actually move?
FedNow runs on ISO 20022 messages, and the flow for a customer credit transfer is short enough to describe end to end. The FedNow Service Operating Procedures, version 3.6, effective April 2026, set out the sequence.
- The sending participant submits a pacs.008 customer credit transfer message to the FedNow Service.
- The service passes the message to the receiving participant, which must answer within a reserved response time the receiver configures — the procedures allow "any value between one and five seconds."
- On a positive response, the service debits the sender's master account and credits the receiver's.
- The service sends a pacs.002 advice of credit to the receiving participant and confirms to the sender.
- The receiving participant makes funds available to its customer and may send account notifications, such as camt.054, downstream.
Two design choices in that sequence matter operationally. FedNow carries credit transfers only — the sender pushes funds; nobody pulls them. The Board kept it that way deliberately, writing that credit transfers "require the sender to authorize and initiate each payment, which can decrease the risk of fraudulent or otherwise unauthorized payments."
The second is the request for payment message, pain.013, which lets a participant ask a payer's institution for funds. A request for payment is a message, not a debit: the payer's bank still has to send an actual credit transfer for money to move.
When does a FedNow payment become final?
Interbank settlement is final. The Board confirmed in the 2020 notice that settlement through the service would be final as proposed, and the operating procedures fix the moment precisely: finality attaches at the earlier of when the FedNow Service records the transaction's debit or credit, or when the service sends the advice of credit.
For a treasury operations team, that is the whole risk picture in one line. There is no unwind window, no return file, no equivalent of an ACH return code that pulls the funds back. A misdirected payment is recovered, if at all, by asking the receiving institution to send a new payment in the other direction.
The operating procedures also describe acceptance without posting, a status that lets a receiving participant accept a payment for settlement while it completes compliance checks before making funds available to the customer. Settlement between the banks and availability to the end customer are separate events.
What are the limits, and who sets them?
There are two ceilings on any FedNow payment: the network limit set by the Reserve Banks, and the participant limit each institution sets for itself. The lower one binds.
The Reserve Banks raised both network limits effective November 12, 2025.
| Message type | Previous network limit | Network limit from Nov. 12, 2025 |
|---|---|---|
| Customer credit transfers and payment returns | $1 million | $10 million |
| Liquidity management transfers | $2.5 million | $10 million |
The Reserve Banks were explicit that the ceiling is permissive, not mandatory: participants may use the maximum limits or set lower ones to suit their own needs. Announcing the increase in September 2025, Mark Gould, chief payments executive for Federal Reserve Financial Services, said the service "will continue to be flexible to meet evolving feedback and increasing demand."
A practical consequence follows. A corporate payer told that FedNow supports $10 million transfers can still have a far smaller payment rejected, because the sending bank, the receiving bank, or both, have configured lower participant limits. The network limit describes what the rail permits, not what any given pair of institutions has switched on.
When is the FedNow Service open?
Always — but its day does not line up with the calendar. Under the Reserve Banks' published operating hours, the FedNow funds transfer business day runs roughly from 7:01 p.m. ET on the previous calendar day through midnight, rolling over at approximately 7:01 p.m. ET each day. Instant payment messages process through weekends and Federal Reserve Bank holidays without a break.
Liquidity management transfers, which participants use to move balances to cover instant payment activity, run on a narrower schedule: 7 p.m. to 7 a.m. ET on weekdays, around the clock on weekends, and from 7 p.m. the evening before a Federal Reserve holiday until 7 p.m. on the holiday itself.
Certain support activities still follow standard business days — weekdays other than Federal Reserve holidays — during core operating hours of roughly 8:30 a.m. to 5 p.m. ET. Payments never stop; the people who fix them keep bankers' hours.
How does FedNow compare with the RTP network?
FedNow is not the only instant rail in the United States. The RTP network is operated by The Clearing House. It settles through a joint account at the Federal Reserve rather than through each participant's own master account — the same joint-account structure the Board described in 2020 when it opened FedNow liquidity management transfers to institutions supporting private-sector instant payment services.
The two rails converged on the same headline number, with The Clearing House getting there first. In a December 2024 announcement, The Clearing House said the RTP network's transaction limit would rise from $1 million to $10 million effective February 9, 2025. Margaret Weichert, its chief product officer, said the higher limit "allows financial institutions and their customers to make larger payments in real time." The company said the network was then averaging more than 1 million payments a day, with 42% of transactions occurring overnight, on weekends, or on holidays. Those figures are the operator's own disclosures.
Both rails are credit-push, both are 24/7, and both are irrevocable once settled. Reach differs, which is why banks that want full coverage connect to both.
What FedNow does not do
It does not pull funds. It does not support direct nonbank participation. It does not guarantee that a receiving customer sees money the instant interbank settlement occurs, because acceptance without posting separates the two. And it does not replace ACH or Fedwire — the Reserve Banks operate all three, each with a different cost, cutoff, and reversibility profile.
For anyone mapping payment flows onto rails, those constraints are the useful part. The speed is the marketing; the finality rules and the limit stack are the operational design.
For a related banking perspective, read Federal Reserve Lifts FedNow's Transaction Cap to $10 Million.
