Ten warning signs of factoring fraud
Most factoring fraud shows up in the receivables long before the money is gone. These are the ten signs an account executive or collector is best placed to catch.
On Business Training · July 7, 2026 · 6 min read
Factoring fraud rarely starts with one dramatic event. It builds up in small departures from normal: an invoice billed a few days early, a credit memo that never shows up, a customer who is always “about to pay.” By the time a client relationship fails, the signs have usually been in the receivables for months.
The people who see them first are not field examiners. They are the collectors, account executives and operations staff who work the client’s receivables every day. Here are the ten signs worth knowing by heart.
1. Invoices billed before the goods ship or the work is done
Pre-billing is the most common fraud in factoring, and it often starts innocently: a client short on cash bills next week’s shipments this week. Watch for invoices clustered at month end, billing that runs ahead of a contract’s schedule, and customers who question invoices “for goods we haven’t received.” Ask for proof of delivery on a sample and compare the delivery date with the invoice date.
2. Credit memos that never arrive
Every business issues credit memos for returns, short shipments and pricing errors. Receivables with almost none are not well managed; usually credit memos are being held back so the eligible balance stays high. Compare the client’s dilution with its own history and with similar businesses in its industry.
3. Invoices that age without any partial payment
Real receivables get paid, disputed or written off. Fictitious ones just sit. Look for invoices that move steadily into the older aging buckets with no partial payments, no disputes and no notes, especially from customers who pay their other invoices on time.
4. An aging that never gets older
The opposite pattern matters too. If old receivables keep disappearing just before each field exam, ask how. Re-aging, where an old invoice is canceled and rebilled with a new date, makes the aging look current. A rebilled invoice with the same amount and the same goods as an old one is the giveaway.
5. Customers who are hard to verify
A customer whose phone always goes to voicemail, whose address is a mail drop, or whose only contact is a cell number supplied by your client deserves a second look. Verify through contact details you find yourself, never ones the client provides.
6. Customers with close ties to the client
Shared officers, a shared address, or a customer formed recently by someone connected to the client are all reasons to check. Affiliate receivables may be real, but they are easy to invent and hard to collect, which is why most agreements treat them as ineligible.
7. Payments that don’t reach you
Under a notification arrangement, customers pay your lockbox. When a customer’s payments slow down but the customer looks healthy, or remittances show invoices paid that never cleared through your account, payments may be going somewhere else. That is the subject of our article on diverted payments.
8. The same invoice financed twice
Double-pledging happens when a client factors the same invoices with two funders, or factors receivables already pledged to another lender. Watch for a new UCC filing against your client, and for customers who say someone else has sent them a notice of assignment.
9. A reluctant client at verification time
Clients who delay verifications, ask to call customers themselves first, or suddenly change their contact at a major customer are worth noting. Most delays are innocent. A pattern of them is not.
10. A business growing faster than its cash
Fast sales growth with no growth in cash, rising payables, unpaid payroll taxes and requests for higher advance rates often come before a fraud rather than after it. Pressure is what turns a struggling owner into a dishonest one.
What to do when you see one
One sign on its own proves nothing. Most have innocent explanations, and treating every early invoice as fraud damages good client relationships. What matters is recording what you saw, testing it against evidence rather than the client’s word, and raising it with your manager when signs start to cluster.
Three habits make the biggest difference:
- Keep notes. A dated note of each question and its answer turns a hunch into a pattern someone else can see.
- Verify independently. Use contact details you found yourself, and check documents against each other: invoice, purchase order and proof of delivery.
- Escalate early. A lender loses far more to a fraud found late than to a question asked too soon.
Fraud is usually caught by the person who noticed something small and wrote it down.
The fraud library covers each of these signs in its own short course, including Pre-Invoicing, Withholding Credit Memos, Rolling Invoices, Duplicate Financing and Diverted Payments. Its case scenarios follow a fictional lender through the receivables and documents where each fraud first showed up.