Notice of assignment in freight factoring: UCC 9-406 and releases

A notice of assignment (NOA) is a written notice, signed by the carrier, the factor or both, telling a broker or shipper that the carrier's invoices have been assigned to the factor and must be paid to the factor from now on. In UCC terms the carrier is the assignor, the factor is the assignee, and the broker or shipper who owes the money is the account debtor. Without an NOA on file, a broker that pays the carrier has paid the right party, and your purchased invoice becomes a claim against your own client.

The NOA is one of four documents that make a factoring relationship work. Each does a different job, and none substitutes for the others.

A UCC-1 without NOAs leaves debtors free to pay the carrier. NOAs without a UCC-1 leave you exposed to another factor that filed first.

The core rule is short. Under UCC §9-406(a), an account debtor may discharge its obligation by paying the assignor "until, but not after," it receives a notification, authenticated by the assignor or the assignee, that the amount due has been assigned and that payment is to be made to the assignee. After receipt, it can discharge the obligation only by paying the assignee.

Three other parts of the section shape how freight NOAs work in practice:

• It must reasonably identify the rights assigned (§9-406(b)(1)). A notice that doesn't make clear which carrier and which receivables it covers is ineffective.
• The debtor can ask for proof (§9-406(c)). If the broker asks, you must seasonably furnish reasonable proof that the assignment was made. Until you do, the broker may keep paying the carrier, even after it has your NOA.
• Anti-assignment clauses are generally ineffective (§9-406(d)). With stated exceptions, a term in the broker-carrier agreement that prohibits or restricts assigning the receivable doesn't hold up under Article 9.

Article 9 reaches factoring because it covers a sale of accounts, not only loans secured by them (§9-109(a)(3)). States enact the UCC with their own variations, so check your state's version and talk to counsel before relying on any one subsection in a dispute.

A freight NOA should let a broker's accounts-payable clerk find the carrier in their system, change the payee, and know how to confirm the change, without calling anyone but you. The NOA generator builds one from these fields.

• The carrier's exact legal name, any DBA, and its USDOT and MC numbers, matching what the broker has in its carrier file.
• Your company's legal name, your mailing address for checks, and the remittance methods you accept.
• A plain statement that all present and future accounts owed to the carrier are assigned to you and must be paid to you.
• A statement that the notice stays in effect until you release it in writing, and that payment to anyone else won't discharge the debt.
• A verification line: a phone number and email at your company where the broker can confirm the NOA or any change, with an instruction to verify changes only by calling that number.
• Signatures and dates from an officer of the carrier and from you. The UCC needs only one, but the carrier's signature answers the broker's first question: does the carrier know?
• A request that the broker acknowledge receipt and confirm the updated payee in writing.

Leave out anything that invites a redirect. Don't tell debtors they can accept bank-detail changes by email, and don't list the carrier as the place to confirm payment instructions.

Section 9-406 turns on receipt by the account debtor, so the job isn't sending the notice; it's being able to prove the right department received it. Brokers process NOAs through carrier-setup or accounts-payable teams, often in an onboarding portal, and an NOA emailed to a load planner may never reach the payment system.

1. 1

   Find the right inbox or portal

   Ask the broker's carrier-setup team where NOAs go. Use contact details from the broker's own website or your prior records, not from the carrier.

2. 2

   Send before the first funding

   For every new debtor, send the NOA before you advance on its first invoice. A debtor that pays the carrier before it receives notice is discharged under §9-406(a).

3. 3

   Get a written acknowledgment

   An email from the broker's AP team naming your company as payee is your best evidence of receipt. A saved portal confirmation is the next best.

4. 4

   Confirm it on the verification call

   On the first verification call for that debtor, ask the broker to read back the payee on file. If it isn't you, the NOA hasn't landed.

5. 5

   Log it

   Keep a record for each debtor, like the one below. When a payment goes astray, this log is what lets you show the broker was notified.

A letter of release (LOR) ends or narrows your NOA. It tells a debtor it may now pay the carrier, or a new factor, instead of you. Send one when a client leaves and its open invoices are settled, when you sell a specific invoice back to the client, or as part of a buyout by a new factor.

Make the scope precise. A release can cover all accounts from a stated date, or only named invoices, and an LOR that just says "released" invites an argument about open invoices.

If the relationship is fully over, file a UCC-3 termination too, so the next factor's search shows your lien ended. Under §9-513(c), where sold accounts have been paid by the account debtor, the carrier can make an authenticated demand that you file or send a termination statement, and you then have 20 days to do it.

Never send a release that names a new remit-to the carrier gave you without confirming it with the new factor directly. A release that changes whom a broker pays is an obvious document to forge, which is the next section.

Anything that changes whom a broker pays is a target. The common versions are a forged letter of release telling brokers to pay the carrier "directly" (to an account the fraudster controls), a fake NOA from a factor that doesn't exist or isn't involved, and an email posing as your company asking a broker to update your remittance details.

Payment networks treat this as a known attack. Triumph says its NOA Management "automates verification of NOA release requests" through its network to confirm the right party is submitting a release (a vendor claim, covering network brokers only). On the email side, Abnormal Security documented a message posing as a factoring company's collection manager that asked a business for its aging report, the customer balances and contacts a redirect scheme needs.

The defense is the same on both sides: confirm every NOA or release by calling the factor at a number from its own website or your records, never the number on the letter. Put that instruction in your own NOA so brokers do it for you. When a competing notice does land, two NOAs, one carrier is the playbook.

Under §9-406(a), once the broker received your notification it could discharge the invoice only by paying you, so paying the carrier generally doesn't end its obligation to you. In practice you send the broker your proof of receipt and acknowledgment and demand payment, and for a recourse client you charge the invoice back while the broker dispute runs.

Debtors don't always comply, and size matters. The IFA's Q3 2025 Transportation Minute, by attorney David Jencks, describes Triumph's suit in the U.S. Court of Federal Claims alleging that USPS paid invoices despite properly tendered NOAs, and reports that Triumph announced a $19.4 million settlement in Q2 2025. The same column notes reports that USPS has said it "does not accept NOAs," and that enforcing against a government debtor involves sovereign immunity and government-contract law.

The column also describes oilfield debtors arguing that anti-assignment clauses excuse them from complying with NOAs, even though the law generally supports enforcement. Before buying invoices from a debtor that resists NOAs, price in the cost of enforcing them, and talk to counsel about your options.

NOAs decay. Brokers change AP systems, merge, re-onboard carriers and accept new paperwork from whoever sends it, so a notice that was right in March can be overwritten by June.

• Send an NOA to every new debtor before its first funded invoice, including small and one-off brokers.
• Ask for the payee on file on every verification call, not just the first one.
• Treat any short pay, missing payment or "we paid the carrier" as an NOA failure until proven otherwise, and resend with acknowledgment.
• When a broker reports a second NOA on your client, stop funding that client and work the conflict before the next advance.
• When a relationship ends, send releases and a UCC-3 promptly, so the carrier's next factor isn't stuck and your old notices don't become someone else's problem.

The NOA protects the invoice. It doesn't protect the bank account you pay the carrier into, which is a separate control covered in how to verify a remit-to or bank-account change.