The most expensive misunderstanding in business funding fits in one sentence: a 1.3 factor rate is not 30 percent interest. Factor rates and APR are two different pricing systems that measure two different things, and owners who compare them directly — in either direction — routinely choose the wrong product. This guide explains how each works, how to translate between them honestly, and how to make the comparison that actually matters.
What a factor rate is
A factor rate is a simple multiplier that fixes total repayment up front. Take $50,000 at a 1.3 factor rate and the total to remit is $65,000 — full stop. There is no compounding, no accruing interest clock, and no penalty math: the cost is the same number on day one and day three hundred. Factor rates are the standard pricing for merchant cash advances and most revenue-based funding, typically ranging from roughly 1.1 to 1.5 depending on risk and term.
What APR is
Annual percentage rate expresses cost as a yearly rate on the outstanding balance, which means time is built into the number. A loan at 12 percent APR costs more the longer the balance is outstanding and less if repaid early. APR exists to make time-based credit products comparable to each other — and it does that job well for loans, lines, and cards.
Why they measure different things
The difference is the time dimension. APR asks: what does this money cost per year it is outstanding? A factor rate asks: what does this money cost, period? A merchant cash advance has no fixed term — remittance is a percentage of revenue, so strong months retire the obligation faster and slow months stretch it — which is precisely why it is not priced with a time-based rate. Strictly speaking, an MCA has no APR, because the duration is not fixed. What can be calculated is an effective annualized cost based on how fast remittance actually runs.
The honest conversion math
Here is the part most funding marketing skips. That $50,000 at a 1.3 factor — $15,000 in cost — annualizes very differently depending on speed. If remittance completes in twelve months, the effective annualized cost is roughly 30 percent. If it completes in six months, the same $15,000 was paid for half the time, so the effective annualized cost is roughly double — in the neighborhood of 60 percent, and higher still on shorter timelines. Faster repayment does not reduce the dollar cost of a factor-rate product; it concentrates it. Anyone comparing options should run this math with their own expected timeline, and our MCA calculator does it automatically.
Why MCAs use factor rates anyway
Because the structure is genuinely different. A merchant cash advance is the purchase of future receivables, not a loan: there is no fixed term to annualize, the total cost is locked regardless of timing, and remittance flexes with revenue instead of demanding a fixed payment in a slow month. The factor rate communicates the one number that is actually fixed — total repayment — which is also the number a business needs for margin math: will the funded activity generate more than $15,000 of value? That is the real underwriting question on the merchant side of the table.
The comparison that actually matters
Comparing products honestly means lining up three numbers, not one: total dollar cost, time to repay, and what the capital makes possible. Bank debt at 10 to 15 percent APR is cheaper per dollar per year than almost any factor-rate product — when you can qualify and can wait weeks. Revenue-based funding costs more and arrives in days with no collateral. The right question is rarely which number is lower; it is whether the opportunity or emergency being funded returns more than the cost of the capital that can actually arrive in time. A $15,000 cost on funding that captures a $60,000 contract is good math; the same cost to patch chronic losses is bad math at any rate structure.
Mistakes to avoid in both directions
Do not read a 1.3 factor rate as 30 percent APR — on short timelines the effective annualized cost is meaningfully higher, and signing while believing otherwise leads to regret. But also do not dismiss factor-rate funding because its annualized cost exceeds bank rates you cannot actually access this month — an unavailable 12 percent loan funds nothing. And never stack new positions to service old ones based on rate confusion; that spiral is how businesses end up needing debt relief instead of growth capital.
Bottom line
Factor rates fix the total; APR rates the time. Translate between them with your real expected timeline before signing anything, demand the total repayment number in writing, and run the margin math on what the capital enables. A merchant cash advance is not a loan; it is the purchase of future receivables, with the total cost fixed up front. Used where speed and access genuinely matter, that trade is rational — and understanding exactly what it costs is what keeps it that way. Approval depends on revenue patterns, time in business, deposit consistency, and other underwriting factors.