A notice of assignment in trucking is a formal letter from a factoring company to your brokers stating that your invoices have been assigned to the factor and that all payments must now be sent to the factor's address or account instead of yours. It is the document that makes factoring legally work: without it, the broker has no obligation to pay the factor, and the factor has no protection for the cash it advanced you.
If you factor, the NOA is not optional, and it is not a formality either. It reroutes every dollar your business earns on assigned invoices, it binds your brokers whether they like it or not, and it stays in force until a second letter, the release, formally reverses it. This article covers what the NOA does, what changes for you and your brokers, what the letter actually looks like, and how the release works when you switch factors or go back to direct payment.
Factoring is the sale of an invoice. When you factor a load, the factoring company buys your receivable and advances you most of its value the same day. The NOA is how that sale becomes enforceable against the person who owes the money: your broker or shipper.
The legal footing comes from Article 9 of the Uniform Commercial Code, the body of law governing assigned receivables in every state. Once a debtor receives proper notice that a receivable has been assigned, payment to anyone other than the assignee does not discharge the debt. In plain trucking terms: after the NOA lands, the broker owes the factor, and only the factor.
That single rule is why factors require an NOA on file before funding your first invoice. The advance they wired you is only safe if the broker's payment is legally locked to them.
What the NOA covers matters as much as what it is. Most NOAs assign all present and future receivables from that broker, not a single invoice. That scope should mirror your factoring contract: a whole-ledger contract produces an all-invoices NOA, while selective arrangements can be narrower. If the NOA your factor sends is broader than the contract you signed, that is a conversation to have on day one, not at exit.
The letter itself is one page. Its consequences run through every payment your business receives. So what actually changes once it is delivered?
Notice of assignment (NOA): a written notice, typically on the factoring company's letterhead, informing a broker or shipper that a carrier's accounts receivable have been legally assigned to the factor and that all payments must be remitted to the factor until the factor revokes the notice in writing. Under UCC Article 9, payment made elsewhere after notice does not settle the debt.
For your brokers, the change is clerical. Their accounts payable team updates the remit-to address on your carrier record and pays the factor's lockbox or account from then on. Broker back offices handle NOAs constantly; factoring is a normal fixture of trucking, used by carriers from one truck to hundreds. The fear that an NOA marks you as financially shaky does not survive contact with how routinely these letters are processed.
The rule with teeth is the one about mistakes. A broker who ignores the NOA and pays you directly has not paid the debt. The factor can still demand the full invoice amount from that broker, which means the broker risks paying twice. That is precisely why brokers comply, promptly and without drama.
For you, three things change:
None of this is a reason to avoid factoring. It is a reason to know exactly which letter is on file with which broker, because that letter, not your intention, controls where the money goes.
A misdirected payment is not free money. If a broker accidentally pays you on an assigned invoice, forward it to your factor immediately. Holding or spending it puts you in breach of your factoring agreement, and the broker still owes the factor regardless, meaning the same invoice can turn into a three-way collections problem you caused by doing nothing.
Your factoring company will issue NOAs on its own letterhead; you will not write this letter yourself. The sample below exists so you can recognize every element, verify the scope matches your contract, and understand exactly what your brokers are receiving on your behalf.
NOTICE OF ASSIGNMENT
Date: [Date]
To: [Broker legal name], Accounts Payable
Re: [Carrier legal name], MC# [number], DOT# [number]Please be advised that [Carrier legal name] has assigned all of its present and future accounts receivable to [Factoring company legal name] ("Factor"). This assignment includes all invoices for services rendered to you by the above carrier.
Effective immediately, all payments on such invoices must be made payable and remitted to:
[Factor legal name]
[Remit-to address or ACH instructions]This notice of assignment remains in full force and effect until you receive written notice of its release signed by an authorized officer of Factor. Payments made to any party other than Factor after receipt of this notice will not discharge your obligation on the assigned invoices, pursuant to the Uniform Commercial Code.
Please acknowledge receipt of this notice by signature below and return a copy to Factor.
Acknowledged by: ______________________ Date: ____________
[Factor authorized signature and contact information]
Three elements deserve your attention every time. The scope line ("all present and future accounts receivable") should match your contract; a selective factoring deal with an all-receivables NOA is a mismatch worth flagging in writing. The release condition names who can end the assignment, and it is the factor alone, which is exactly why the exit process in the next section matters. And the acknowledgment block creates the broker's paper trail; a signed NOA is what makes the pay-the-factor obligation ironclad.
Keep a copy of every NOA sent on your behalf, and a list of which brokers have one on file. At exit time, that list is the difference between a clean unwind and months of chasing.
The factor, not you, controls when an NOA ends, and factoring companies generally will not issue the release letter while you owe them anything: open advances, unresolved chargebacks, or fees. If you are planning to switch factors or go back to direct pay, settle the balance question first, or the old NOA will keep routing your revenue to a company you have already left.
Every NOA has a mirror image: the letter of release (sometimes "release of assignment"). It is the factor's written notice to your brokers that the assignment has ended and payments should go to you, or to your new factoring company, from a stated date forward. Until brokers receive it, they are legally right to keep paying the old factor.
The standard exit sequence looks like this:
When a factor drags its feet on a release after the balance is settled, escalate in writing: a dated demand referencing the settled balance, then your new factor's buyout team (they navigate this weekly), and if needed, the contract's dispute process. Slow releases are common enough that our factoring contract red flags guide treats the release process as a clause to vet before signing, not after.
The NOA is the switch that reroutes every dollar. The release is the switch back. Carriers who know where both switches live get to change factoring companies on their own timeline; carriers who do not, wait. If you are choosing a factor now, contract exit terms are compared company by company in our rankings of the best freight factoring companies for trucking.
Keep an "NOA ledger": one list of every broker with an active NOA, the date it was sent, and, when you exit, the date the release went out. It costs five minutes per broker and turns the messiest part of switching factoring companies into a checklist you control instead of a mystery the factor controls.
"The NOA is the switch that reroutes every dollar. The release is the switch back. Know where both switches live before you sign."
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