How to Fax Wire Transfer Authorizations — Secure Financial Document Transmission
A wire transfer authorization tells a bank to send an electronic funds transfer for the account holder, usually for large amounts where ACH won't do or when same-day settlement is needed. Banks and credit unions keep tight controls on these because wire fraud is everywhere and a sent wire is almost impossible to claw back. Many institutions specifically require the authorization by fax on signed company letterhead, since fax is a separate channel from email, which is the main route for the business email compromise schemes that target wire instructions. Send FAX Mail records a delivery timestamp for the signed authorization you file as documentation.
How to Fax a Wire Transfer Authorizations
- 1Obtain your bank's official wire transfer authorization form — do not use a generic template; banks have proprietary forms that include required security fields and callbacks
- 2Complete all required fields: originating account number, beneficiary name, beneficiary bank name and ABA routing number, beneficiary account number, wire amount in both numbers and words, and the intended purpose of the wire
- 3For international wires, include the SWIFT/BIC code of the beneficiary bank, the IBAN (for European destinations), and any required intermediary bank information
- 4Obtain the required signatures from authorized signatories — most banks require dual authorization for wires above threshold amounts; confirm your account's wire authorization structure
- 5Verify the bank's official wire department fax number by calling the number on the back of your debit card or your account agreement — never use a fax number from an email, even one that appears to come from the bank
- 6Log in to Send FAX Mail, upload the signed wire authorization, and save the delivery confirmation as your documentation of the authorization timestamp
Document Format
Wire amounts must be written both numerically and spelled out in words — discrepancies between the two figures will cause the bank to return the authorization for correction. Beneficiary account numbers must be written exactly as provided by the beneficiary — a single transposed digit sends the wire to the wrong account. For recurring wire relationships, banks may allow you to establish a standing wire template that reduces the risk of errors on each transaction. Include your authorized signatory's direct callback number on the form — most banks call to verbally verify wire authorizations.
Legal Considerations
Wire transfer fraud — particularly business email compromise schemes that redirect wire authorizations to fraudulent accounts — costs U.S. businesses billions annually. Once a wire is sent, recovery is extremely difficult; the Fedwire and SWIFT systems provide limited recall procedures that succeed only a fraction of the time. Banks are required under the UCC and Regulation J to verify the identity of wire requestors and may be held liable for unauthorized wires if they fail to follow commercially reasonable security procedures. Always verify beneficiary wire instructions through an out-of-band verification (call the beneficiary directly at a known number) before initiating any wire, especially for new payees or changed banking information.
Industries That Fax This Document
Faxing a Wire Transfer Authorizations — FAQ
Business email compromise is the most common form of wire fraud, where attackers take over an inbox and forge or intercept wire instructions. Fax sits on a separate channel that's harder to compromise and produces its own delivery record, which is why many banks treat a faxed authorization as more trustworthy than an emailed one.
Most banks call an authorized number already on file, not the number printed on your faxed form, to verbally confirm wires above a set threshold. That's standard fraud prevention. Never give verbal wire confirmation to someone who called you rather than a number you know belongs to your bank.
Fedwire runs until 6 PM Eastern for same-day settlement, and you should allow two to three hours of processing once the bank receives your form. The delivery confirmation marks the exact time the bank got the authorization, which matters if there's a dispute about whether you submitted in time.
An authorization is usually one or two pages, so a 7-day free trial lets you send a test wire authorization before you commit. A business sending several wires a month fits the Starter plan at $12.99 a month for 600 pages, which gives delivery confirmation on every send. A treasury team faxing wires daily moves up to a higher plan rather than paying per page.
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