What Is a Factor Rate? The Math Explained

If you've looked at a merchant cash advance offer and seen a number like 1.25 or 1.35 where you expected an interest rate, you've encountered a factor rate. It's not complicated once you understand it. This article shows you the math, explains what moves the number, and walks through how to compare offers before you sign anything.

What a Factor Rate Is

A factor rate is a multiplier. Not an interest rate. Not an APR. A multiplier applied to your advance amount to determine your total repayment.

The calculation is simple:

Advance amount × factor rate = total payback amount

That's the entire formula. If you borrow $50,000 at a 1.25 factor rate, you pay back $62,500. The $12,500 difference is the cost of the advance.

A few more examples at $50,000:

• Factor rate 1.15: pay back $57,500 (cost = $7,500)
• Factor rate 1.20: pay back $60,000 (cost = $10,000)
• Factor rate 1.25: pay back $62,500 (cost = $12,500)
• Factor rate 1.30: pay back $65,000 (cost = $15,000)
• Factor rate 1.40: pay back $70,000 (cost = $20,000)

Factor Rate vs APR: Why You Can't Compare Them Directly

This is the most common source of confusion. Business owners see a 1.30 factor rate and try to convert it to a percentage to compare it to a bank loan at 9% APR. That comparison doesn't work.

APR (annual percentage rate) assumes you hold the money for an entire year. If a bank charges 9% APR on $50,000, you pay $4,500 in interest over 12 months.

An MCA doesn't work that way. The cost is fixed upfront, and repayment typically happens in 4 to 12 months, not 12. The faster you repay, the higher the equivalent APR. The slower you repay, the lower it is.

The right way to evaluate an MCA is by total payback amount and daily payment amount, not by trying to compare it to an APR.

The Rate Table: $40,000 Advance at Different Factor Rates

Here's what a $40,000 advance looks like across five common factor rates, with daily payment estimates at 6 months (126 business days) and 12 months (252 business days):

Notice that the difference between a 1.15 and a 1.40 factor rate on $40,000 is $10,000 in total cost. On a $40,000 advance with a 6-month repayment, the difference in daily payment is about $79/day. That's the range of what your factor rate actually means in practice.

What Moves Your Factor Rate

Lenders don't assign factor rates at random. Here are the main things that push the number up or down:

Credit Score

580 credit might get you 1.35–1.45. 650+ credit gets you closer to 1.15–1.25. The range is significant. Improving your credit before you apply has a direct impact on what you'll pay back.

Time in Business

A business open for 8 months will pay a higher factor rate than one open for 3 years. Longevity signals stability. Lenders price that in.

Revenue Consistency

A business with $50,000/month in deposits every month for 12 months will get a better rate than one with $80,000 one month and $15,000 the next. Consistent deposits reduce lender risk.

Industry

Restaurants, bars, and trucking companies typically carry higher factor rates than, say, medical practices or professional service firms. High churn, thin margins, and high default rates in those industries mean lenders price in more risk. If you're in trucking or food service, expect factor rates at the higher end of the range.

Outstanding Balances

If you already have an active MCA or multiple open positions with lenders, your factor rate will be higher. Lenders see existing advances as a repayment burden that increases their risk.

How to Compare Two MCA Offers

You receive two offers. Here's what to look at:

Offer A: $45,000 advance at 1.28 factor. Total payback: $57,600. Daily payment over 7 months: $380/day.

Offer B: $40,000 advance at 1.25 factor. Total payback: $50,000. Daily payment over 6 months: $397/day.

Offer B has the lower factor rate. But Offer A gives you $5,000 more and costs $7,600 more total. If you need $45,000, Offer A is your only real option. If you only need $40,000, Offer B costs less and pays off faster.

When a Higher Factor Rate Is Still Worth It

We work with business owners every day who see a 1.35 factor rate and hesitate. Sometimes that hesitation costs them money.

Here's the scenario. A Houston electrical contractor gets called Tuesday for a commercial job that pays $220,000. The job starts next Monday. He needs $38,000 for materials and permits. He can wait 3 weeks for a bank loan at a 1.10 equivalent cost, or he can have $38,000 by Thursday at a 1.34 factor rate.

The 1.34 factor on $38,000 costs him $12,920. The job nets $70,000 after all costs. He's up $57,000 after the advance repays. Waiting 3 weeks for cheaper financing means losing the job entirely. The $12,920 cost is the price of capturing a $70,000 opportunity.

Factor rates have to be evaluated in context of what the capital is enabling, not just as a cost in isolation.

What to Ask Before You Sign

Before accepting any MCA offer, confirm these four numbers:

1. Total payback amount (advance amount × factor rate)
2. Daily or weekly payment amount
3. Estimated repayment term (based on your revenue and the percentage being debited)
4. Any origination or administrative fees added on top of the factor rate

Some lenders add fees on top of the stated factor rate. Those fees change the true cost of the advance. Ask for the total amount you will repay, all-in. That number is what matters.