How Invoice Factoring Works and When It Makes Sense

Invoice factoring works by selling your unpaid business-to-business invoices to a third party (the "factor") at a discount, so you collect most of the cash within a day or two instead of waiting 30, 60, or 90 days for your customer to pay. The factor advances you a large slice of the invoice up front — commonly in the 80% to 95% range, for example — holds the rest in reserve, and then releases that reserve, minus its fee, once your customer settles the bill. It is not a loan. You are converting an asset you already own (a receivable) into working capital today, which is why factoring approval leans on your customers' credit and payment history rather than your own FICO score. That single distinction is what makes it powerful for some businesses and a poor fit for others.

Below, an underwriter's walkthrough of the mechanics, the real cost drivers, a worked example, and a plain decision framework for when factoring makes sense — plus where a revenue-based advance is the smarter route instead.

What invoice factoring actually is (and what it is not)

Factoring is the sale of a receivable. When you invoice another business for goods or services on net-30, net-60, or net-90 terms, that invoice is an asset — a legal claim to money you've already earned. A factoring company buys that claim from you at a small discount and takes over waiting to be paid.

Three things separate it from a loan:

• No new debt on your balance sheet. You're selling an asset, not borrowing against one. There's no fixed monthly loan payment and, in a true sale, no term to amortize.
• Approval hinges on your customers, not you. The factor is betting on whoever owes the invoice paying it. A young company with thin credit but blue-chip customers (a hospital system, a national retailer, a government agency) can often factor when it can't qualify for a bank line.
• It's tied to specific invoices. You get cash proportional to what you've genuinely billed and delivered. It scales up as you invoice more and down when you don't — it is not a lump sum you spend however you like.

Factoring is also different from invoice financing (also called accounts-receivable financing or discounting), where you borrow against your invoices and keep control of collections. In factoring proper, the factor usually takes over collecting the invoice from your customer.

How the money moves, step by step

The mechanics are consistent across most factors:

1. You deliver and invoice. You complete the work or ship the product and send your customer an invoice on normal terms.
2. You submit the invoice to the factor. Often via an online portal, along with proof of delivery or a signed work order.
3. The factor verifies and advances. After confirming the invoice is valid and the customer is creditworthy, the factor wires you an advance — for example 85% of the invoice face value — typically within 24 to 48 hours of the first funded invoice.
4. Your customer pays the factor. On their normal timeline (net-30/60/90), the customer remits payment directly to the factor. With notification factoring, the customer is told to pay the factor; with non-notification, it's kept quiet.
5. The reserve is released. Once the invoice is paid in full, the factor returns the held-back reserve to you, minus its factoring fee.

Two structures matter for risk. Under recourse factoring (the most common and cheapest), you are on the hook if your customer never pays — you buy the invoice back or swap it. Under non-recourse factoring, the factor absorbs certain non-payment losses (usually only customer insolvency, not disputes), and you pay a higher fee for that protection. Read the definition of "non-recourse" in any contract carefully; it is often narrower than it sounds.

What invoice factoring costs

Factoring pricing has two main levers: the advance rate (how much cash you get up front) and the factoring fee (what the factor keeps). The fee is usually quoted as a percentage of the invoice, and it commonly accrues over time — the longer your customer takes to pay, the more it costs.

• Factoring fee / discount rate: often expressed as a base percentage for the first 30 days, then an additional increment per week or per additional 10–30 days the invoice stays open. Slow-paying customers erode your margin.
• Advance rate: higher advance rates put more cash in hand now but the rest still sits in reserve until payment.
• Add-on charges: watch for setup or due-diligence fees, monthly minimums, wire/ACH fees, credit-check charges, and early-termination penalties on long contracts. These, not the headline rate, are where factoring gets expensive.

The most important cost concept for owners: factoring is priced on your customers' payment behavior. If your customers pay in 25 days, factoring is cheap. If they routinely stretch to 75, the same headline rate costs you far more. Know your true days-sales-outstanding before you sign.

A realistic example: staffing agency waiting on net-60

Consider a small commercial staffing agency that places workers with a large logistics company. Payroll runs every two weeks, but the client pays invoices on net-60. That gap is the classic factoring use case: the agency owes wages long before it collects revenue.

Figures are illustrative "for example" numbers, not a quote. The point isn't the exact fee — it's the cash-flow shape. The agency turned a 60-day wait into next-day working capital and could make payroll without dipping into a personal credit line. As long as the fee is smaller than the cost of missing payroll, losing the placement, or turning away the next contract, the trade is worth it.

Decision framework: when factoring makes sense — and when to avoid it

Invoice factoring works best when:

• You invoice other businesses or government on terms. Factoring needs B2B or B2G receivables with net-30/60/90 terms. This is why it's common in staffing, trucking/freight, manufacturing, wholesale, and commercial services.
• Your customers have stronger credit than you do. If your buyers are large, reliable payers, the factor's risk is low and your pricing is good — even if your own credit is thin or you're a young company.
• The cash-flow gap is structural, not a one-off. Predictable, recurring receivables (regular clients on regular terms) factor cleanly and let you fund growth without new debt.
• Slow payment is your only bottleneck. You have profitable, delivered work — you're just waiting to get paid, and that wait is blocking payroll, materials, or the next job.

Avoid factoring (or think twice) when:

• You sell to consumers (B2C) or take card/cash on delivery. No 30–90 day receivable means nothing to factor. A revenue-based option fits far better here.
• Your invoices are disputed, milestone-based, or contingent. Progress billing, "pay-when-paid" construction terms, and work subject to acceptance are hard or impossible to factor cleanly.
• Your customers are shaky payers. If your buyers are the credit risk, factoring gets expensive fast and recourse can bite you.
• You need a fixed lump sum for a project or equipment. Factoring scales with invoices; it's not a lump you can budget against a specific purchase.
• Client optics matter and you can't do non-notification. Some owners don't want customers remitting to a third party. Ask about non-notification programs before ruling it out.

Factoring vs. a revenue-based advance: choosing the right tool

Factoring isn't the only way to close a cash-flow gap. Many businesses that can't factor — or don't want their customers involved — are better served by a revenue-based advance, where funding is approved on your bank deposits and overall revenue rather than on specific invoices or your credit score.

Choose invoice factoring if you're a B2B/B2G business with creditworthy customers, real receivables sitting on net terms, and slow payment is your main constraint.

Choose a revenue-based advance if you sell to consumers, take cards or cash on delivery, don't have factorable invoices, want your customers kept out of it entirely, or need capital fast on the strength of your deposits and revenue — with minimums from around $10,000, FICO 500+ considered, and funding often in 24–48 hours. No legitimate funder guarantees approval; a marketplace matches you to offers based on your bank statements and revenue.

How to evaluate a factoring company before you sign

Once you've decided factoring fits, the contract terms decide whether it's a good deal. As an underwriter, these are the questions I'd want answered in writing:

• Recourse or non-recourse — and what exactly does non-recourse cover? Usually only customer insolvency, not disputes or slow pay.
• Is there a monthly minimum volume? Minimums can force you to factor invoices you'd rather collect yourself.
• What's the real all-in cost? Add the fee, setup, wire, credit-check, and any monthly service charges — not just the headline discount rate.
• How does the fee escalate with time? Confirm the increment per additional period so slow payers don't surprise you.
• Is it whole-ledger (all invoices) or spot/selective (pick and choose)? Spot factoring costs more per invoice but gives you flexibility.
• Notification or non-notification? Decide how much customer contact you can tolerate.
• What's the contract length and the early-termination penalty? Long lock-ins with steep exit fees are the most common regret.

Get the fee schedule and the recourse language in writing, model it against your actual days-sales-outstanding, and compare the all-in cost against the alternative before committing.