Somewhere in your accounting software is money you have already earned that you cannot spend: finished work, delivered goods, invoices sent, and a customer whose terms say net 45 and whose habits say longer. Invoice factoring exists for exactly that trapped money. Instead of waiting on the customer, you sell the invoice to a factoring company and get most of its value this week.
Notice the verb. Factoring is a sale, not a loan. That distinction is not lawyer trivia: it changes who gets underwritten (your customers, mostly), what happens if the invoice goes unpaid (depends on the agreement, and you want to know before signing), and why young businesses that no lender will touch can often factor comfortably.
This guide walks the full mechanism: the advance, the reserve, the fee, the two flavors of risk, what the product costs in practice, and the businesses it genuinely fits. As with everything we write, the goal is that you understand the machine before anyone asks you to sign it.
The mechanics, start to finish
You deliver work to a business customer and issue an invoice on payment terms, say $20,000 at net 45. Instead of waiting, you sell that invoice to a factor. The factor verifies the invoice is real and the work accepted, checks your customer's payment reputation, and advances you a percentage of the face value now: the advance rate is a term the factor sets per deal, based on your customer's credit and your industry's dispute history, and it is quoted to you before you sign. Suppose a factor advances 85 percent on this invoice, a round figure chosen here for visibility: $17,000 hits your account within a day or two of verification.
The remaining $3,000 becomes the reserve, which the factor holds until your customer actually pays. When the customer pays the factor on day 40, the factor releases the reserve minus its fee. If the fee for that invoice worked out to $600, you receive $2,400 and the transaction closes: $19,400 collected in total, most of it five weeks early.
Two operational details surprise first-timers. The customer typically pays the factor directly, via a notice of assignment on the invoice, so your customers generally know a factor is involved. And the factor will usually file a UCC-1 filing against your receivables, standard practice, but something your next lender will see, so it belongs in your records, not your blind spot.
What factoring costs, and how to read a fee quote
Factoring fees are usually quoted as a percentage of the invoice per period of time, because the factor's real product is time. The structure is what matters, because it is the same everywhere while the number is not: a rate per period, multiplied by how many periods the invoice stays unpaid. Suppose an invented quote of 1 percent per 30 days on a $20,000 invoice: paid in 30 days it costs $200, and the same invoice dragging to 90 days costs $600. Fast-paying customers make factoring cheap; slow ones make it expensive, mechanically.
All numbers here are invented, round illustrations; real quotes vary widely with industry, volume, invoice size and your customers' quality. When you compare quotes, ask for the same three things from each factor: the advance rate, the complete fee schedule by age of invoice, and every additional charge, since wire fees, monthly minimums, and termination fees are where cheap headline rates recover their margin. Put competing quotes side by side in the offer comparison tool rather than trusting the friendliest phone voice.
Annualized, factoring often prices between a bank line and a merchant cash advance. Whether that is expensive depends on what the trapped cash costs you: missing a supplier discount, delaying a hire, or covering payroll with a costlier product can each be worse than the fee.
Recourse versus non-recourse: who eats a bad invoice
In a recourse agreement, the risk of an unpaid invoice stays with you: if your customer never pays, you buy the invoice back or replace it. Recourse is the common, cheaper structure, and it is fair as long as you understand you have sold the waiting, not the risk.
Non-recourse shifts defined risks to the factor, typically the customer's insolvency, in exchange for higher fees and stricter customer approval. Read the definition clause carefully: non-recourse rarely covers disputes, short-pays, or a customer who simply drags out payment without going broke. A dispute about the work itself lands back on you in either structure, which is one honest reason factors verify invoices before advancing.
If a customer already owes you and is refusing to pay, that is a different problem than factoring solves; what to do when a customer won't pay covers that situation head-on.
Spot factoring or whole-ledger, and what customers see
Factoring comes in sizes. Spot factoring sells a single invoice with no ongoing commitment, at higher per-invoice pricing. Contract factoring runs your whole ledger, or an agreed slice of it, through the factor, usually at better rates with monthly minimums and a term. Owners with one painful customer often start spot; businesses whose whole model runs on terms tend toward contracts.
The customer-visibility question deserves honesty: with standard notification factoring, your customers pay the factor and know it. In industries where factoring is routine plumbing, trucking, staffing, apparel wholesale, nobody blinks. Elsewhere, a professional factor behaves like a competent accounts receivable department, which some customers experience as an upgrade. If the idea of any notice is unacceptable, factoring in its ordinary form is probably not your product.
Who factoring genuinely fits, and who it does not
The fit test is one sentence: you invoice creditworthy businesses on terms, and the wait is the problem. That describes trucking companies waiting on brokers, staffing agencies fronting weekly payroll against monthly client payments, subcontractors between draws, wholesalers shipping to retail chains, and service firms billing enterprises on net 60.
Factoring also reaches files other products decline. Because the underwriting leans on your customers' payment strength, a young company with thin credit but blue-chip clients can factor when no line of credit exists for it. That is the product's honest superpower.
It does nothing for businesses paid at the point of sale: restaurants, salons, retail. No invoices, nothing to factor; for revenue-based alternatives in those trades, the product map points the right direction. And where the choice is genuinely between factoring and an advance, invoice factoring versus MCA works that comparison dimension by dimension.
Deciding with your own numbers
Pull your aging report and add up everything past 30 days: that figure is what factoring would put to work this week. Then price the wait you are actually enduring, late supplier payments, paused hiring, the working capital squeeze, against a realistic fee on those invoices, and the decision usually makes itself visible. One habit worth building either way: track which customers consistently pay late, because they are the ones deciding your factoring cost, and sometimes the cheaper fix is renegotiating terms with one slow payer rather than factoring the whole ledger.
If the direction is worth exploring, the funding estimator takes about a minute, free, no login, and no hard credit inquiry unless a specific provider requires one with your separate consent. Providers decide approvals and terms independently, and estimates are estimates. The trapped money is already yours; the only question is what getting it early is worth.
Frequently asked questions
Is invoice factoring a loan?
No. Factoring is the sale of an asset, the invoice, at a discount. Nothing amortizes, no interest accrues, and in a true sale there is no debt on your balance sheet, though recourse provisions can blur the economics. The practical differences: approval leans on your customers' credit, and the cost is a fee for time rather than interest on a balance.
What is the difference between factoring and invoice financing?
Factoring sells the invoice; the factor collects from your customer. Invoice financing borrows against the invoice; you still collect and repay the lender yourself, and your customer usually never knows. Financing preserves the customer relationship surface, factoring outsources collection work. Pricing overlaps, so compare specific quotes rather than assuming either label is cheaper.
Will my customers think my business is in trouble if I factor?
In industries where factoring is standard infrastructure, trucking, staffing, wholesale, no. Elsewhere it varies with how the factor conducts itself, which is worth checking: ask any factor how they contact customers and what the notice looks like before you sign. Many large, healthy companies factor purely for cash flow timing; the product is older than banking prejudice about it.
Can I factor if my own credit is weak?
Often yes, and this is factoring's distinctive door: the factor's primary risk is whether your customers pay, so their credit matters more than yours. Your file is not irrelevant, factors screen for fraud, liens, and existing UCC positions against your receivables, but a bruised score that blocks a line of credit frequently does not block a factoring relationship.
How fast does factoring actually pay?
Setting up the relationship takes a few days to a couple of weeks: verification, customer checks, agreement, UCC search and filing. Once running, advances on submitted invoices commonly land within 24 to 48 hours of verification. So factoring is not the fastest first dollar, but it is among the fastest recurring dollars, which is the rhythm most factoring users actually need.