A bank settlement is the final, irreversible transfer of funds between two financial institutions that completes a payment. Until settlement happens, a payment is just an instruction. Once it happens, the money has legally changed hands and the sending bank cannot pull it back. In 2025, the U.S. ACH network alone processed 35.19 billion payments,1Nacha. ACH Network Volume and Value Statistics and Fedwire moved an average of $4.59 trillion every business day.2Federal Reserve Financial Services. Fedwire Funds Service – Annual Statistics
Clearing and Settlement Are Two Different Steps
Every interbank payment goes through two stages, and they don’t happen at the same moment.
Clearing is the verification stage. The system checks that the payment instruction is valid, confirms the account numbers, and determines whether the sender has enough money. At the end of clearing, both banks know what they owe each other, but no money has moved yet.
Settlement is the execution. It posts the actual debits and credits to the banks’ accounts, which are typically held at a central bank like the Federal Reserve. Once that posting happens, the transfer is final. This distinction matters for you as a customer because your balance can reflect a deposit during clearing, before the money has legally changed hands behind the scenes.
Why Banks Don’t Move the Full Amount of Every Payment
Most settlement systems use a process called netting. Instead of transferring the full value of every transaction, the system adds up everything Bank A owes Bank B for the day, subtracts everything Bank B owes Bank A, and only moves the difference. If two banks exchanged $10 million going one direction and $8 million going the other, only $2 million actually settles.
Netting cuts the amount of cash banks need on hand to cover their obligations. A central clearinghouse or the Federal Reserve calculates each bank’s net position across all its counterparties, then posts the final amounts to the banks’ master accounts at the Fed. That posting is what closes out the payment cycle.
How the Main U.S. Settlement Networks Work
Different kinds of payments flow through different networks. The one your payment uses depends on its size, its speed requirement, and whether it crosses borders.
ACH
The Automated Clearing House network handles most routine U.S. payments: payroll direct deposits, bill payments, account-to-account transfers, and business-to-business payments. It reaches every U.S. bank and credit union account.
Traditional ACH uses deferred net settlement. Transactions are batched together and settled four times each business day rather than one at a time.3Nacha. ACH Payments Fact Sheet A payroll file submitted in the morning might not settle between banks until later that afternoon or the next day. Same-Day ACH, introduced in 2015, speeds this up for payments up to $1 million per transaction, which can be processed and settled the same business day.4Federal Reserve Financial Services. Same Day ACH Resource Center ACH processing pauses on weekends and Federal Reserve holidays, so a payment initiated on those days waits until the next business day to begin moving.
Fedwire
Fedwire is the Federal Reserve’s wire transfer system, and it works on a different principle than ACH. Instead of batching and netting, it uses real-time gross settlement: each transfer is processed and settled individually the moment it’s submitted.5Federal Reserve Financial Services. 2025 Fedwire Funds PFMI Disclosure No batch windows, no netting.
That makes Fedwire the choice for large or time-sensitive transfers. It averages about 869,000 transfers per business day.2Federal Reserve Financial Services. Fedwire Funds Service – Annual Statistics The system operates from 9:00 p.m. ET the night before each business day through 7:00 p.m. ET, a 22-hour window,6Federal Reserve Financial Services. Wholesale Services Operating Hours and it doesn’t run on Federal Reserve holidays. Because each transfer settles independently and immediately, a bank must have enough funds in its Fed master account before the transfer goes through. The Federal Reserve monitors those balances during the day and charges fees on daylight overdrafts.7Federal Reserve Board. Daylight Overdrafts and Fees
CHIPS
The Clearing House Interbank Payments System is the largest private-sector U.S. dollar clearing and settlement network, handling about $2.2 trillion each business day.8The Clearing House. About CHIPS About 95% of CHIPS transactions are the dollar leg of a cross-border payment that originates or terminates in another country, which makes it the dominant network for international dollar transfers.9The Clearing House. CHIPS Network Successfully Migrates to ISO 20022 Message Format
CHIPS uses a hybrid approach. Throughout the day, its algorithm continuously matches and nets payments between participants, settling as many as possible bilaterally. At the end of the operating cycle, any remaining obligations are netted and settled in a final batch. The design captures the liquidity savings of netting while still settling most payments well before the end of the day.
Card Networks
When you swipe a credit or debit card, two things happen at different speeds. Authorization and clearing happen almost instantly: your issuing bank confirms you can cover the charge, the merchant’s acquiring bank receives approval, and the amount is set aside. Settlement between the two banks happens later, usually within one to three business days, when the card network reconciles the day’s cleared transactions and transfers net amounts between institutions. That gap is why a pending charge can sit on your account for a day or two before it becomes final.
FedNow
The Federal Reserve launched FedNow in July 2023 to close a gap none of the older networks could fill: instant, final settlement at any hour, including weekends and holidays.10Federal Reserve Board. FedNow Service – Frequently Asked Questions Where ACH batches transactions and Fedwire shuts down overnight and on holidays, FedNow processes individual payments and settles them in seconds, 24 hours a day, 365 days a year.
A payment sent through FedNow on a Saturday night settles immediately between the banks, and the recipient can use the funds right away. Through ACH, that same payment wouldn’t begin processing until Monday. The per-transaction limit was raised from $1 million to $10 million in November 2025, opening the network to larger commercial payments.11Federal Reserve Financial Services. FedNow Service Raises Transaction Limit to $10 Million Not every bank or credit union participates yet.
Available Funds Are Not the Same as Settled Funds
Your bank might let you spend deposited money before settlement is complete, and this is where a lot of people get burned. Available funds and settled funds are two different things.
Federal regulations set maximum hold periods that banks can impose. The first $275 of any check deposit must generally be available the next business day. Beyond that threshold, hold times vary based on the deposit method, whether the check is drawn on the same bank, and the account’s history.12eCFR. 12 CFR Part 229 – Availability of Funds and Collection of Checks Deposits at non-proprietary ATMs can be held for up to seven business days.
When a bank releases funds before settlement completes, it’s making a business decision based on risk tolerance and your history with the account. If the underlying check bounces or the ACH payment is returned after you’ve already spent the money, you’re responsible for the shortfall. This is exactly why the classic “deposit a check and wire part of it back” scam works. The victim spends funds that were available but never actually settled.
Settlement Risk and Why Timing Matters
The time gap between when one party sends payment and the other receives it creates settlement risk. The most dramatic version is cross-border: two currencies settling in different countries and different time zones. A bank delivering yen during Tokyo business hours might wait 12 or more hours to receive the corresponding dollars during New York business hours. If the counterparty fails in that window, the sending bank has paid out its currency and may never receive what it was owed.
This danger is sometimes called Herstatt risk, after a German bank whose 1974 collapse left counterparties holding exactly that kind of loss. Modern settlement infrastructure addresses it in a few ways. Real-time gross settlement systems like Fedwire require banks to have sufficient funds before processing each transfer, so a payment cannot settle without adequate backing. Netted systems rely on collateral requirements and central bank guarantees to ensure remaining obligations are honored if one participant defaults. FedNow’s instant settlement compresses the risk window to seconds.
A Note on Securities Settlement
The word “settlement” also gets used in stock and bond trading, and it means something related but distinct. In securities, settlement refers to the exchange of cash for shares. Since May 28, 2024, the standard cycle for most U.S. securities trades is T+1, meaning one business day after the trade date.13Investor.gov. New T+1 Settlement Cycle – What Investors Need To Know That’s a different process from the bank payment settlement described above, even though the underlying idea, funds and assets changing hands to complete a transaction, is the same.