Almost every large dollar payment in the United States settles across one of two rails. One is run by the Federal Reserve. The other is run by the banks themselves. They solve the same problem, moving high-value funds between institutions with finality, but they make opposite bets about liquidity and timing. Knowing which bet you are making is the whole job.
This module covers the two systems and the choice between them. We assume you already know the gross-versus-net distinction from the previous module. Here we put real names and real constraints on it.
Fedwire Funds Service: real-time gross settlement
Fedwire is the Fed's large-value rail. It is a real-time gross settlement (RTGS) system, which means every payment settles individually and immediately across accounts held at the Reserve Banks. There is no batching and no netting. When a Fedwire transfer completes, the funds have moved in central bank money, and the settlement is final and irrevocable. There is no clawback, no return window, no "pending."
That finality is the product. A Fedwire payment is done the instant it settles, and the receiver can use the funds with zero settlement risk. The cost of that certainty is liquidity. Because each payment is funded in full at the moment it is sent, the sending bank needs the balance (or Fed-provided daylight credit) available right then. You pay for finality with funding.
The operational envelope:
- Roughly 22 hours a day, opening at 9:00 p.m. ET the prior calendar day and closing at 7:00 p.m. ET.
- Currently Monday through Friday, excluding Federal Reserve holidays.
- A per-transfer ceiling of one penny under $10 billion.
One forward-looking note for planning. In late 2025 the Fed announced it will expand Fedwire and the National Settlement Service to operate on Sundays and weekday holidays, moving toward roughly 22 hours a day, six days a week. Implementation is set for no earlier than 2028. Treat weekend Fedwire as a roadmap item, not a current capability.
CHIPS: privately operated netting with intraday finality
CHIPS, the Clearing House Interbank Payments System, is the private-sector counterpart. It is operated by The Clearing House, a bank-owned cooperative, and serves a small membership of roughly 40-some direct participants, mostly the large US and foreign banks that move serious dollar volume, including a heavy share of cross-border correspondent flow. It clears on the order of $1.8 trillion a day.
CHIPS is not RTGS. It is a prefunded, continuously netting system, and the design is worth understanding precisely because the word "netting" can mislead. Each participant funds an opening position by sending money over Fedwire to a CHIPS prefunded balance account at the Federal Reserve Bank of New York. Through the day, CHIPS holds payment messages in a central queue and runs a matching algorithm that releases them, individually or in offsetting groups, against participants' positive positions. The result is multilateral netting that still delivers intraday finality: when a message is released from the queue, it is final at that moment, not at end of day.
The efficiency is real. A modest amount of prefunding supports a far larger volume of settled value, because offsetting flows cancel before they ever consume liquidity. At end of day, any remaining unreleased messages are settled after a closing prefunding round, with surplus positions paid back out over Fedwire. So CHIPS opens on Fedwire and closes on Fedwire. It rides on top of central bank money rather than replacing it.
The operational envelope: Monday through Friday, 9:00 a.m. to 6:00 p.m. ET, with settlement throughout the day via the netting queue and a final close-out before end of day.
How a practitioner chooses
The two systems are not interchangeable, and the choice usually makes itself once you state your constraints honestly.
Reach for Fedwire when timing certainty beats liquidity cost. Time-critical settlement legs, a securities or property closing, a margin call, a CLS pay-in, or any payment where the receiver needs guaranteed final funds at a known instant belong on Fedwire. You also use Fedwire by default if your counterparty is not a CHIPS participant, since CHIPS only moves money among its members. And you use it for the longest operating window, given the 22-hour day.
Reach for CHIPS when you are pushing large, less time-pointed volume between major banks and you care about funding efficiency, especially cross-border correspondent payments. If you are a participant sending a high count of offsetting dollar payments, CHIPS lets you settle far more value per dollar of prefunding than gross-settling each one on Fedwire would. The trade-off is that an individual payment may sit in the queue until it can be matched or released, so you give up the to-the-second control Fedwire gives you.
A concrete example
A US bank owes a London counterparty $400 million to close a cross-border trade, and the same day it expects roughly $360 million back from that bank and others across various deals. If it gross-settles the $400 million on Fedwire, it needs the full $400 million of liquidity available the moment it sends, finality at a precise time, but expensive funding. If both banks are CHIPS participants and the payment is not tied to a hard deadline, routing it through CHIPS lets the $400 million net against the inbound $360 million, so only the residual is funded from real liquidity. The bank still gets intraday finality on the released messages. It simply funds the net, not the gross.
Now change one fact: the $400 million is a CLS pay-in due at a fixed cutoff. The deadline removes the choice. That goes on Fedwire, because you are buying a guaranteed settlement instant, and queue timing is a risk you cannot take.
Takeaway
Fedwire and CHIPS both deliver final, large-value dollar settlement, but they price it differently. Fedwire charges you in liquidity and pays you in precise, immediate, irrevocable finality across central bank money. CHIPS charges you in queue timing and pays you in funding efficiency through prefunded multilateral netting, then leans on Fedwire to open and close. Pick the rail by asking which constraint binds you: if it is the clock, use Fedwire; if it is the balance sheet and your counterparty is a member, use CHIPS.