Notice of Assignment (NOA)

A Notice of Assignment is a formal letter that informs an account debtor (the party that owes on an invoice) that the underlying receivable has been assigned to a factor or lender, and directs the debtor to remit payment to the assignee rather than to the original seller.

What a Notice of Assignment Does

When a business sells its receivables to a factor, ownership of those invoices transfers to the factor. The Notice of Assignment, commonly abbreviated NOA, is the document that makes this transfer operationally real for the party that actually pays the invoice: the account debtor. It states that the seller's receivables have been assigned, identifies the factor as the new owner, and instructs the debtor to send all payments to the factor's designated remittance address or account.

The NOA is typically delivered at the start of a factoring relationship and applies to current and future invoices from that seller, although the exact scope depends on how the notice is worded. It may be issued on the seller's letterhead, signed by an authorized officer of the seller, or on the factor's letterhead, and it commonly carries the factor's remittance details.

Legal Effect

The legal weight of an NOA comes from assignment law as codified in Article 9 of the Uniform Commercial Code in the United States. Once an account debtor has received an authenticated notification that an account has been assigned and that payment is to be made to the assignee, the debtor discharges its obligation only by paying the assignee. Paying the original seller after receiving a valid notice does not discharge the debt, meaning the debtor can be required to pay a second time, to the factor.

This is the core protection the NOA provides. Before notice, a debtor who pays the seller in good faith is discharged. After notice, the debtor is on record that the factor controls the receivable. An account debtor may also request reasonable proof that the assignment occurred, and until that proof is furnished it can continue to discharge the obligation by paying the assignor.

An NOA is distinct from a UCC financing statement. A UCC filing perfects the secured party's interest against other creditors and is a public record. The NOA is a private communication that redirects payment and binds the specific account debtor. A factor commonly relies on both: the UCC filing for priority and the NOA for payment control.

Notification vs Non-Notification Factoring

Not every factoring arrangement uses an NOA. The choice defines two operating models.

Notification factoring: the debtor receives an NOA and pays the factor directly. This is the most common structure and gives the factor the clearest control over collections.
Non-notification factoring: the debtor is not told the receivable was assigned and continues to pay the seller, who then forwards funds or routes them through a controlled lockbox. This preserves the seller's customer relationship but increases the factor's collection and misdirection risk.

Many lenders blend the two, using non-notification during normal performance and reserving the right to issue notice if the relationship deteriorates.

What an NOA Typically Contains

Identification of the seller (assignor) and the factor (assignee).
A clear statement that the seller's receivables have been assigned to the factor.
Instructions to remit all payments to the factor, with the exact remittance address, bank account, or lockbox.
A direction that the payment instructions can only be modified or revoked in writing by the factor.
Sometimes a tear-off acknowledgment for the debtor to sign and return, confirming receipt and agreement to redirect payment.

Why It Matters for Lenders

The NOA is the mechanism that converts a paper assignment into actual cash control. Without a valid, received notice, a debtor can keep paying the seller, and those funds may never reach the factor. Misdirected payments are one of the more common sources of loss and reconciliation work in factoring, because the cash physically lands in the wrong account and must be clawed back from a borrower who may have already spent it.

A returned acknowledgment also serves an underwriting purpose. It confirms the debtor exists, recognizes the invoice relationship, and accepts the payment redirection. That confirmation reduces the risk of fraudulent or fictitious receivables being funded.

Verifying and Maintaining the NOA

Issuing the notice is only the first step. Operationally, a lender should confirm the notice reached the correct accounts payable contact, track which debtors have acknowledged it, and watch for payments that still arrive at the seller despite the notice. Persistent misdirected payments can signal a debtor that ignored the notice, a stale contact, or an attempt to divert funds.

Reconciliation closes the loop: matching each incoming payment to the expected debtor and invoice confirms the NOA is being honored, while exceptions flag receivables that need follow-up. Zolvo supports this work by verifying invoices and debtors, monitoring remittance behavior, and reconciling payments against expected receivables so that breakdowns in the assignment surface early rather than at audit.