Invoice Factoring: How It Works, What It Costs, and When to Use It

Invoice factoring is a form of financing where you sell your unpaid business-to-business invoices to a third party (a "factor") at a discount in exchange for immediate cash — typically 80% to 90% of the invoice value upfront, with the balance released, minus the factor's fee, once your customer pays. Instead of waiting 30, 60, or 90 days for a client to settle an invoice, you get most of the money within a day or two, and the factor takes over collecting the payment. It is not a loan: you are advancing cash you have already earned, so approval rests on the creditworthiness of your customers, not on your personal credit score. That makes factoring a fit for staffing agencies, freight and trucking, wholesalers, manufacturers, and service firms that invoice other businesses and struggle with the gap between doing the work and getting paid.

How invoice factoring actually works, step by step

Factoring converts an accounts-receivable asset into cash before your customer pays. The mechanics are consistent across most factors:

1. You deliver the goods or service and invoice your customer on normal net-30/60/90 terms.
2. You sell that invoice to the factor. The factor verifies the invoice is legitimate and that your customer is likely to pay.
3. The factor advances you a percentage upfront — commonly 80% to 90% of face value — often within 24 to 48 hours.
4. Your customer pays the factor directly (in most arrangements) when the invoice comes due.
5. The factor releases the reserve — the remaining 10% to 20% — back to you, minus its factoring fee.

Two structural details drive everything else. First, recourse vs. non-recourse: with recourse factoring (the common, cheaper form) you must buy back or replace any invoice your customer fails to pay; with non-recourse factoring the factor absorbs certain non-payment losses in exchange for higher fees. Second, notification: most factoring is "notification" factoring, meaning your customer is told to remit payment to the factor. Because a third party now touches your customer relationship, factoring is not invisible the way a private cash advance is.

What invoice factoring costs

Factoring is not priced as an APR. The core cost is a factor fee (also called a discount rate), typically expressed as a percentage of the invoice that accrues over time the invoice stays unpaid — for example a flat fee, or a rate that steps up every 10, 15, or 30 days. On top of the discount rate, watch for ancillary charges: an application or setup fee, monthly minimums, ACH/wire fees, invoice-processing fees, and early-termination fees on multi-year contracts. A cheap-looking headline rate can become expensive once minimums and a long collection cycle are layered in.

Because the fee accrues with time, factoring rewards fast-paying customers and punishes slow ones. An invoice that pays in 20 days costs far less proportionally than the identical invoice that drags to 75 days. Before signing, model the cost against your actual average days-to-pay, not the invoice's stated terms — the two are rarely the same.

Example: factoring a batch of invoices (illustrative)

The figures below are for example only and do not reflect any specific offer. They show how advance rate, timing, and fee interact — not a quote.

Notice the pattern: the same invoice becomes more expensive the longer it takes to collect, and a lower advance rate leaves more cash tied up in reserve. Factoring is most efficient when your customers pay reliably and reasonably quickly.

Decision framework: when factoring fits and when to avoid it

Invoice factoring works best when:

• You sell B2B (or to government/institutional buyers) and invoice on net terms — factoring needs an invoice to buy.
• Your customers are creditworthy but slow, and the cash gap between delivery and payment is choking payroll or the next job.
• Your own credit is thin or damaged, but your customers are solid — approval leans on their ability to pay.
• Your margins can absorb the discount, and receivables are a recurring, predictable part of the business (staffing, trucking, distribution, manufacturing).

Avoid or reconsider factoring when:

• You sell B2C or take card/cash at point of sale — there is no net-terms invoice to factor.
• Your customers are the ones who don't pay reliably — factors will decline them, and with recourse you eat the loss anyway.
• Your margins are already tight — the discount can erase them.
• You don't want a third party contacting your customers, or a single large customer would react badly to a factor's involvement.
• You need a lump sum for a purchase or project that isn't tied to specific outstanding invoices — factoring can't fund what you haven't billed.

That last case is where many owners actually land: they need working capital now, but the need isn't cleanly attached to a stack of unpaid B2B invoices. That's the gap the next section addresses.

Factoring vs. revenue-based funding: a fair head-to-head

Factoring advances cash against specific invoices. Revenue-based financing — the marketplace category that includes the merchant cash advance — advances a lump sum against your overall future revenue, repaid as a small share of daily or weekly deposits. They solve overlapping problems from opposite directions.

Choose invoice factoring if your cash problem is specifically the wait on strong B2B customers, you're comfortable with the factor contacting them, and you want financing that scales directly with your receivables.

Choose a revenue-based / MCA marketplace if you don't have a clean pile of B2B invoices to sell, you'd rather keep funding invisible to customers, you take card or consumer payments, or your approval hinges on healthy bank deposits rather than customer credit. Approval there weighs revenue and deposit consistency over your personal FICO (500+ is commonly workable), minimums start around $10,000, and funding typically lands in 24–48 hours. See our merchant cash advance overview for how repayment-as-a-share-of-revenue works in practice. No responsible funder — factoring or otherwise — should ever promise "guaranteed" approval.

How to qualify and what factors look for

Because factoring underwrites your customers, the diligence differs from a loan. Expect a factor to review:

• Invoice quality: real, deliverable, uncontested invoices for work already completed. Progress-billing and "pre-billed" invoices are often ineligible.
• Customer credit: the payment history and financial strength of the businesses you invoice. Concentration in one shaky customer is a red flag.
• Aging: current receivables factor cleanly; invoices already 60–90 days late are hard or impossible to sell.
• Liens: whether another lender already holds a UCC blanket lien on your receivables — that has to be resolved or subordinated first.

Personal credit still matters at the margins, but far less than with a bank line. If your customers are the weak link, factoring will stall — and a revenue-based option that underwrites your deposits may move faster.

Common mistakes and how to protect yourself

• Ignoring the contract term. Many factoring agreements are 12–24 months with monthly minimums and steep early-termination fees. Read the exit before the entrance.
• Underestimating collection speed. Model cost against your real average days-to-pay, not stated net terms — the fee accrues with every extra day.
• Missing the recourse trigger. Under recourse factoring, an unpaid invoice becomes your liability again. Know exactly when and how a buyback is called.
• Overlooking customer optics. With notification factoring, your customer now pays a third party. For a marquee client, have that conversation proactively.
• Stacking blind. If a factor holds a lien on your receivables, layering other financing on top can create conflicts. Disclose existing obligations up front.

Factoring is a legitimate, decades-old cash-flow tool — but it is a commitment, not a one-time swipe. Match it to receivables you can predict, and price it against how your customers actually pay.