You send a $40,000 invoice to a solid client — a general contractor you’ve worked with for two years. They pay in 60 days, reliably, which is exactly the problem: your crew’s payroll is due in eight days. A factoring company (a lender that buys your unpaid invoices at a small discount and advances you cash today, then collects from your client directly) quotes you 2%. You do fast math — $800 on a $40,000 invoice — and it feels manageable. You sign.
Six weeks later, the remittance statement hits your inbox and the actual cost was $1,640. Not 2%. More like 4.1% — and annualized, that’s north of 49%. You weren’t lied to, exactly. But you weren’t told the whole story either. This article is the story you needed before you signed.
The Discount Rate Is a Starting Line, Not a Finish Line
{#p-discount-rate-intro}
The discount rate — the percentage the factor deducts from your invoice’s face value as their fee — is the only number most marketing materials lead with. And yes, it matters. But it’s a starting line.
Most factors charge their discount rate in one of two ways:
- Flat fee per invoice: A fixed percentage regardless of how long the invoice takes to collect. Example: 2% of $40,000 = $800, full stop. If your client pays in 15 days, you paid the same as if they paid in 45. This structure favors fast-paying clients.
- Tiered/floating rate: A base rate (often 1–1.5%) for the first 30 days, then an additional fee for each additional 10- or 15-day block until the invoice is collected. Example: 1.5% for days 1–30, plus 0.5% per additional 10-day period. If your client pays on day 45, you paid 2.5% total.
The floating structure is more common among mid-market factors. It looks cheaper on day one. On day 60, it isn’t.
By the numbers — same $40,000 invoice, different rate structures:
| Structure | Day 30 Payment | Day 45 Payment | Day 60 Payment |
|---|---|---|---|
| Flat 2% | $800 | $800 | $800 |
| 1.5% + 0.5%/10 days | $600 | $1,000 | $1,400 |
| 1% + 0.4%/10 days | $400 | $800 | $1,200 |
If your clients routinely pay at day 50–60, a flat 2% quote will almost always beat a tiered 1.5% quote. Run the math for your average payment timeline, not the factor’s best-case scenario.
The Fee Stack Nobody Emails You
The discount rate is page one. Here’s what lives on pages two through five of the contract:
ACH / Wire fees. Every time the factor sends you an advance or remits your reserve (the 10–20% they hold back until your client pays), they charge a transfer fee. ACH typically runs $15–$25. Wires run $25–$50. If you’re factoring 10 invoices a month and receiving 10 remittances, you could be paying $250–$500/month in transfer fees alone — fees that don’t show up in your discount rate math.
Lockbox fee. {#p-hidden-fees} When you factor invoices, your clients are directed to remit payment to the factor’s lockbox — a bank account controlled by the factor. Many factors charge $50–$150/month just to maintain this lockbox. It’s infrastructure cost passed to you. Some factors bury it as an “account maintenance fee” or “bank processing fee.” Different name, same charge.
Due diligence / origination fee. Most factors charge a one-time setup fee when you open the account — typically $150–$500, sometimes more for construction or healthcare. This fee is often negotiable, especially if you’re bringing a volume commitment.
Monthly minimum fee. This is the one that trips up seasonal operators. If your contract says you owe a monthly minimum volume (say, $50,000 in factored invoices per month) and you have a slow month, you pay as if you factored that minimum anyway. A factor charging 1.5% on a $50,000 monthly minimum means you owe $750 minimum — every month — regardless of your actual volume. Read the minimums clause with the same attention you’d give a lease.
Termination / exit fee. Some contracts include a penalty for leaving before the contract term ends — often 1–3% of your credit limit or average monthly volume, multiplied by the remaining months. On a $500,000 credit line with 10 months left on a 12-month contract, a 1% exit fee is $5,000. This is real money, and it’s a negotiating point before you sign — not after.
Verification / credit check fees. Some factors charge per-debtor credit checks ($5–$25 each) to evaluate whether they’ll accept a given invoice. If you’re submitting invoices from 15 clients, that’s a recurring cost.
Converting the Quote to True APR
{#p-apr-math}
Factoring companies are not currently required to disclose APR the way traditional lenders are. Because factoring sits outside the mandatory APR-disclosure framework that governs bank loans, you need to run this math yourself. The Consumer Financial Protection Bureau’s small business lending resources — available at consumerfinance.gov/compliance/compliance-resources/small-business-lending — address disclosure standards for business credit products and make clear why annualized cost comparisons matter. The Federal Trade Commission’s small business guidance similarly encourages business owners to look beyond headline rates when evaluating financing offers. Neither agency currently mandates APR disclosure from factors, but both reinforce why the conversion below is essential before you commit.
Here’s the conversion formula:
Effective APR = (Total fees ÷ Amount advanced) × (365 ÷ Days outstanding)
Let’s run our $40,000 invoice example with the full fee stack:
- Invoice face value: $40,000
- Advance rate: 85% = $34,000 advanced
- Discount rate (flat 2%): $800
- ACH fee (advance + remittance): $40
- Lockbox allocation (pro-rated per invoice): $50
- Total fees: $890
- Days outstanding: 45
Effective APR = ($890 ÷ $34,000) × (365 ÷ 45) = 2.62% × 8.11 = ~21.3% APR
That’s a very different conversation than “2% per invoice.” And that’s a good scenario — flat rate, fast-paying client, no monthly minimum shortfall. Add a 60-day payment timeline and a monthly minimum charge and you can push that number above 40% APR without any individual fee being outrageous.
For context, the U.S. Small Business Administration offers several loan programs — including the widely used 7(a) program — that are structured around fixed or variable interest rates rather than discount fees. The SBA sets maximum allowable spreads that lenders may charge above a base rate, and the agency publishes its current rate guidelines on its website. The comparison with factoring isn’t perfectly fair — SBA loans take weeks to close, while factoring funds in 24–48 hours — but understanding the cost gap is the point. You’re paying for speed and flexibility. Know what you’re paying.
Effective factoring costs vary widely depending on industry, client creditworthiness, and contract structure — which is precisely why headline rates are such a poor basis for comparison. The Federal Reserve’s periodic surveys of small business credit conditions (published by regional Federal Reserve banks, including the Kansas City Fed) consistently document that business owners who compare financing on a total annualized cost basis make materially better borrowing decisions than those who compare on headline rate alone.
Recourse vs. Non-Recourse: The Other Pricing Dimension
{#p-recourse-nonrecourse}
Beyond the fee stack, your contract’s recourse structure affects both price and risk.
-
Recourse factoring: If your client doesn’t pay the factor (due to dispute, insolvency, or slow-pay), you’re on the hook. The factor will charge the invoice back to you — you refund the advance and eat the loss. This is the more common structure and generally carries lower discount rates.
-
Non-recourse factoring: The factor absorbs the loss if your client can’t pay (note: most non-recourse contracts have carve-outs — they cover credit defaults but not disputes or invoice dilution). This protection costs more: typically 0.5–1% higher discount rate.
The math trade-off: if you’re factoring $500,000/year and upgrading from 2% recourse to 2.75% non-recourse, you’re paying an extra $3,750/year for default protection. That’s worth it if you’re working with new clients you haven’t vetted or in industries with spotty payment histories. It’s probably not worth it if you have a tight, well-known client base with a long track record.
Construction subcontractors should pay particular attention here: joint check agreements and pay-when-paid clauses create dispute scenarios that most non-recourse policies explicitly exclude. The “protection” may be narrower than it appears.
How to Compare Three Quotes Without Getting Fooled
You have three term sheets in front of you. Here’s a decision framework:
-
Standardize to the same invoice profile. Pick your average invoice size and your average days-to-collection. Don’t let a factor’s example use an invoice twice as large or a payment timeline two weeks shorter than your reality.
-
Add every recurring fee. ACH, lockbox, monthly minimum (use your realistic slow-month volume, not your best month) — add them all to the discount fee total before you calculate APR.
-
Price the exit. What does it cost to leave in month 8 of a 12-month contract? A lower monthly rate with a steep exit clause is a trap if your business is seasonal or if you expect to grow into a bank line of credit within the year.
-
Ask about concentration limits. Many factors won’t advance on more than 20–25% of your portfolio from a single debtor. If one client represents 60% of your revenue, you may not be able to factor most of your receivables under standard terms.
-
If X, then Y:
- If speed is the only constraint and you’ll exit within 90 days → flat-rate, no-minimum, month-to-month at a slightly higher rate beats a tiered annual contract.
- If volume is predictable and you’ll use the line consistently → negotiate the monthly minimum to match your slow months, not your average months. The difference in minimum commitment is often negotiable even when the rate isn’t.
- If your clients are unknown credits or new relationships → the premium for non-recourse is probably worth running through the APR math above to see if it beats the exposure.
- If your effective APR is coming out above 35–40% on a 60-day invoice → this is the moment to ask whether a short-term bank line or an SBA microloan can solve the same cash flow problem at a materially lower annualized cost, even accounting for the slower access timeline.
The 2% quote isn’t a lie. It’s just an incomplete sentence. Finish it before you sign.