APR vs. Factor Rate: Comparing Costs That Aren't Measured Alike

Two units that look comparable — and aren't

Put these two hypothetical offers side by side:

• Offer A: $40,000 at 35% APR, repaid monthly over 6 months
• Offer B: $40,000 at a 1.25 factor rate, repaid monthly over 6 months

To most people, "1.25" reads like 25-something-percent, which sounds cheaper than 35%. It isn't. Worked out honestly, Offer B costs more than twice as much. The two numbers cannot be eyeballed against each other, because they measure different things:

• APR is a rate over time. It says what borrowing costs per year, with interest accruing on your remaining balance — so as you pay principal down, the interest charged shrinks with it.
• A factor rate is a fixed multiplier with no time dimension. Multiply the amount funded by the factor and that's your total repayment, period. Repay over 4 months or 14 months — the dollar cost is identical, which means the annualized cost is wildly different depending on the term.

Because the factor rate ignores time and APR is defined by it, converting is the only honest way to compare. Our factor rates explained guide covers where these products come from; this page does the math.

The worked conversion: $40,000 at a 1.25 factor

Step 1 — total repayment. $40,000 × 1.25 = $50,000. The financing cost is a fixed $10,000.

Step 2 — the payment schedule. Suppose the term is 6 months with equal monthly payments: $50,000 ÷ 6 ≈ $8,333 per month.

Step 3 — find the APR that produces this schedule. Ask: what interest rate on an ordinary amortizing loan would turn $40,000 into six monthly payments of $8,333? Solving the amortization equation (the same internal-rate-of-return math a spreadsheet's RATE function does), the answer is a monthly rate of about 6.77% — which annualizes to roughly 81% APR.

Not 25%. Eighty-one percent.

The intuition: your average outstanding balance over those 6 months is only a bit over half of $40,000, because every payment returns principal. You're paying $10,000 to use, on average, roughly $23,000 for half a year. Charge that much, on that balance, for that long, and the annualized rate is enormous even though "1.25" looks tame.

Now compare with the 35% APR offer. The same $40,000 at 35% APR over 6 months amortizes to about $7,364 per month — a total of roughly $44,181, or about $4,181 in financing cost.

The offer that "sounded like 25%" costs $5,800 more on the same money over the same term. That gap is why converting units isn't pedantry — it's the whole ballgame. Run any quote you receive through our factor rate to APR converter before comparing it to anything quoted in APR.

Fixed cost vs. amortizing: why early payoff behaves differently

The deeper difference between the units shows up the day you try to pay early.

On an amortizing APR loan, interest accrues on the remaining balance over time. Pay off the 35% APR loan above after 3 months and you stop the interest clock — you keep most of the interest you would have paid in months 4–6 (check the contract for prepayment penalties, but the default mechanics work in your favor).

On a factor-rate product, the $10,000 fee is fixed at signing. Pay it all back after 3 months and, absent a negotiated discount, you still owe the full $50,000. You've paid the same fee for half the time — which means your effective APR roughly doubles. The same $10,000 cost compressed into a 3-month repayment works out to an effective APR of about 145%.

This inversion trips people up constantly: with an APR loan, faster repayment saves money; with a factor-rate product, faster repayment (without a discount clause) makes the deal worse in annualized terms. Some contracts do include early-payoff discounts — if you might repay early, get that clause in writing before signing, not after.

Payment frequency quietly raises the effective rate

Factor-rate products often collect weekly or even daily payments rather than monthly. That matters because getting your money back sooner, for the same fixed fee, raises the annualized cost.

Take the same $40,000 at a 1.25 factor over 6 months. Collected as 26 weekly payments of about $1,923 instead of 6 monthly payments, the effective APR rises from roughly 81% to about 90% — same fee, same nominal term, higher true cost, because on average your money is in the lender's hands sooner.

Daily collection pushes this further, and it also strains cash flow in a way monthly numbers hide: a business with lumpy revenue can be current on paper and still miss a Tuesday debit. When you model a factor-rate offer, model the actual payment frequency.

Conversion reference table

The table below converts factor rates to approximate effective APRs by repayment term. The assumption matters, so here it is explicitly: equal payments spread evenly across the term (computed monthly), with APR derived from the schedule's internal rate of return and annualized by multiplying the monthly rate by 12 — the same convention used for standard loan APRs. Faster collection (weekly or daily) or front-loaded schedules push the true figure above these values; these are floors more than ceilings for typical products.

Read it in two directions. Down a column: each 0.05 of factor adds serious annualized cost. Across a row: the same factor gets dramatically more expensive as the term shortens — a 1.10 factor is about 18% APR over a year but about 59% APR over three months. When a provider offers to shorten your term "to save you time," the dollars don't change, but the annualized price of your money soars.

How to use this when comparing real offers

1. Get every quote into APR and total dollars. Factor quotes via the converter; APR quotes are already there, but confirm fees are included — our APR vs. interest rate guide explains the difference.
2. Compare against slower, cheaper structures before accepting a fast one. If your need can wait even a few weeks, price a term loan or line of credit; if it can wait longer, SBA programs cap what lenders can charge. Factor-rate pricing lives mostly in the working capital corner of the market — see how all seven product types stack up in our business loan options comparison.
3. Decide on the converted number, not the quoted one. If the true APR still makes sense for the opportunity — sometimes it genuinely does for short, high-return needs — proceed with open eyes. Then compare several funding providers rather than accepting the first offer.

A factor rate isn't automatically a trap, and an APR isn't automatically fair. But a comparison between the two raw numbers is always wrong. Convert first; decide second.