Wire Transfer

Also called wire, Fedwire, CHIPS, bank wire

The original same-day large-value rail. Fast, final, expensive, and the favorite target of business email compromise fraud.

What it is

A wire transfer moves money directly between banks with same-day settlement and finality. In the US, wires run over Fedwire, operated by the Federal Reserve, or CHIPS, operated by The Clearing House. CHIPS handles high-value domestic and cross-border USD payments through 43 direct participant banks, clearing more than $2 trillion in average daily value across more than 630,000 transactions each business day, with 95% of payments settling with finality in seconds subject to value and liquidity conditions. CHIPS uses a liquidity-saving mechanism that continuously matches and offsets payment obligations, producing roughly a 26:1 liquidity efficiency ratio in 2025 — meaning $1 of funding supports approximately $26 in settled payment value — worth an estimated $5.5 billion in annual economic value to participants. For a small business, wires are the tool for large one-off payments: real estate closings, equipment purchases, boat and vehicle transactions, cross-border vendor payments. Fees typically run $10 to $50 outbound and $10 to $20 inbound, which is trivial on a $500,000 transfer and absurd on a $2,000 one. Melio, for example, publishes wires at $10 and international at $20 flat or 1% in local currency.

Why it matters to your business

If your business ever wires money — a boat purchase, an equipment buy, a closing, a large vendor payment — you need one written procedure: any change to payment instructions triggers a phone call to a number you already had, not a number in the email. That single rule prevents the most expensive fraud a small business experiences. On the receiving side, wires are excellent for large-ticket sales where you don't want chargeback risk. A marine dealer or equipment seller taking a wire has final funds; the same sale on a card is disputable for months.

Where it gets contested

Wires are the single most exploited channel in business fraud, and the mechanism is social rather than technical. Business email compromise works by convincing someone in accounting to wire funds to an account controlled by a fraudster — usually by impersonating an executive, a vendor changing bank details, or a title company. Because wires are final, the money is gone. Recovery depends on catching it within hours and on the receiving bank's cooperation. This is exactly the risk Nacha's 2026 credit-push fraud rules target on the ACH side, establishing base-level payment monitoring obligations across the network. Wires have no equivalent consumer-style protection, which is why the mitigation is entirely procedural: verified callback to a known number before any change of payment instructions, dual approval above a threshold, and never acting on emailed banking details. The other complaint is cost and opacity, particularly on international wires, where correspondent banking fees deduct along the way and the beneficiary receives less than was sent, often without either party knowing in advance how much. Newer rails and fintech alternatives compete directly on that gap.

How to check it yourself

Write down your wire verification procedure today and give it to whoever can initiate payments: any change in bank details requires a callback to a previously known number, and any wire above a set threshold requires two approvals. If you don't have that written, you have the exposure.

Receipts

Claims above that are checkable, with where to check them. Published so you do not have to take anyone's word for it.

CHIPS clears more than $2 trillion in average daily value across more than 630,000 transactions each business day through 43 direct participant banks, with 95% of payments settling with finality in seconds and a ~26:1 liquidity efficiency ratio in 2025 worth ~$5.5 billion in annual economic value
theclearinghouse.org ↗
New Nacha Operating Rules target credit-push fraud including business email compromise and impersonation schemes by establishing base-level payment monitoring on all parties except consumers
nacha.org ↗
Melio publishes wire pricing at $10 domestic and $20 flat or 1% in local currency for international
melio.com ↗