I Borrowed $50,000. I Paid Back $70,000 in Six Months. Here’s the Math Nobody Showed Me.

I Borrowed $50,000. I Paid Back $70,000 in Six Months. Here’s the Math Nobody Showed Me.

(Composite story based on common owner experiences.)

Marcus owns a small catering company. In March, a corporate client paid late, a freezer died, and he had a payroll to cover on Friday. By Tuesday afternoon he was on the phone with a funding company. By Wednesday morning, $50,000 was in his account.

The whole process took about ten minutes of paperwork. The rep kept saying one number: 1.4.

“It’s not an interest rate,” she said. “It’s just a simple factor.”

Marcus signed. Six months later, he did the math at his kitchen table and felt sick. By the end of this post, you’ll be able to do that math in 60 seconds, before you sign.

What a factor rate actually is

A merchant cash advance (MCA) isn’t technically a loan. It’s the purchase of a portion of your future sales at a discount. Instead of an interest rate, the funder uses a factor rate, usually somewhere between 1.1 and 1.5.

The formula is simple:

Advance × Factor Rate = Total Payback

For Marcus: $50,000 × 1.4 = $70,000.

That’s $20,000 in cost on $50,000, or 40% of the amount borrowed. And that number never changes, whether you repay in three months or twelve.

The step-by-step math

Say Marcus repays over about 170 business days (roughly eight months). His daily payment is:

$70,000 ÷ 170 = about $412 per business day

If the term is closer to six months (about 126 business days), the payment jumps to roughly $555 per day.

Why speed wrecks the APR

Here’s what the rep didn’t mention. With a traditional loan, interest is charged on the balance you still owe. With an MCA, the fee is fixed up front, but you’re paying back the principal every day. So you’re paying a full 40% fee on money that you’ve mostly returned within a few months.

Compare the same 40% fee over different terms:

Term	Fee	Rough effective APR
12 months	40%	~75-80%
6 months	40%	~145-160%
3 months	40%	300%+

These are estimates, since the exact figure depends on payment schedule and fees, but the pattern is clear: the shorter the term, the higher the true cost.

The 60-second formula

For a quick estimate:

1. Take the fee as a percentage of the advance (factor − 1). For 1.4, that’s 40%.
2. Divide by the term in months, then multiply by 12. For 6 months: 40 ÷ 6 × 12 = 80%.
3. Because you’re repaying principal daily, the real APR is usually close to double that estimate: about 150%.

It’s not exact, but it’s close enough to tell you whether an offer is expensive. For a precise number, ask the funder for the APR equivalent or use an online calculator.

The fees hiding in the fine print

The factor rate is only part of the story. Look for:

• Origination or underwriting fees, often 2-5%, taken from your funding
• Admin or ACH fees
• Broker commissions built into the factor rate

Marcus’s “$50,000” was actually $48,000 after fees, and he still owed $70,000. His cost was higher than he thought.

Five questions to ask before you sign

1. What is the total payback amount, in dollars?
2. What is the net amount I’ll actually receive after fees?
3. What is the expected term, and what happens if sales are slower than projected?
4. What is the full list of fees?
5. Is there a written reconciliation clause, and how do I invoke it?

If a rep dodges any of these, that tells you something.

When an MCA can still make sense

This isn’t a hit piece. An MCA can be a reasonable tool when:

• You have a short-term, high-margin opportunity (a bulk inventory discount that will pay back far more than the cost)
• You can’t qualify for a bank loan or line of credit and the need is urgent
• You’ve run the numbers and the return clearly exceeds the cost

The problem isn’t the product existing. It’s owners signing without knowing what it costs.

Key takeaway

Never judge an MCA by the factor rate alone. Convert it to a true annual cost, check your net funding, and compare it against every other option.

You can see every program side by side on our business funding page, and read how each works in our business financing guide.