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Adrythm
The business math

Factor rate

factor rate vs APR / MCA factor rate / factor rate calculator

In short

A factor rate is the multiplier some business funders use to price an advance: take $40,000 at 1.35 and you repay $54,000. It reads like a 35% cost, yet it ignores time. Repaid over six months of daily debits, that example works out to an annual percentage rate near 126%.

Factor rates price merchant cash advances and some other short term business funding. The price is a decimal. Multiply the amount you receive by it, and the answer is the total you pay back.

The Federal Trade Commission describes a merchant cash advance as money provided in exchange for a percentage of a business's revenue. The provider typically makes daily withdrawals from the business's bank account until the obligation has been met.

The multiplier leaves out the thing that sets the real cost, which is how fast the money goes back. A 1.35 factor repaid over twelve months and the same factor repaid over six carry the same total payback. The six month version costs about twice as much per year, because you hold the money half as long.

California treats the gap as a disclosure problem. SB 362, approved in October 2025, lists pricing described as a factor rate among its examples of confusing representations when that rate diverges materially from the APR. It requires a provider that states a charge or pricing metric for a specific offer to also state the annual percentage rate.

In practice

Take a $40,000 advance at a factor rate of 1.35. The payback is $54,000, so the cost is $14,000. Collected in equal daily debits over 126 business days, about six months, each debit is $428.57 and the annual percentage rate comes to about 126%. Spread the same deal over 252 business days and it falls to about 63%. The figures are a worked example.

Not the same as

Annual percentage rate
APR states the cost per year, so it reflects how long you hold the money. A factor rate states the total multiple and stays the same whether repayment takes six months or twelve.

Why it matters to you

Two offers with the same factor rate can differ twofold in yearly cost. Get the annual percentage rate and the total payback in writing for every offer, then compare them side by side. A factor rate alone cannot rank two offers with different repayment speeds.

What to ask or check

  1. 01What is the annual percentage rate on this specific offer, and how was it calculated?
  2. 02What is the total payback in dollars, and how much comes out of the account each day or week?
  3. 03What happens to the payments if revenue drops in a slow month?

What people get wrong

That a factor rate of 1.35 is a 35% interest rate. The multiplier stays fixed however long repayment takes, so the faster the money goes back, the higher the yearly cost.

Red flags

  • An offer that quotes a factor rate and no annual percentage rate.
  • A daily or weekly debit amount nobody has written down before signing.
  • A confession of judgment clause, the kind the FTC alleged one provider used to pursue customers' personal assets in court.

Break-even point

The break-even point is where total cost and total revenue are equal, so there is no loss or gain. The SBA states it plainly and then states the limit plainly too: it is an estimate for lender viability and a business plan, not an accounting result, and the formula assumes a single product or service.

Margin

Margin is the difference between selling price and cost, stated either as a percentage of the selling price or per unit. The standards board that defines it also records that managers differ widely in the assumptions they use. So the number only means something once you know which costs are inside it.

Return on investment

Return on investment is profit measured against capital invested. The standards board that defines it says related measures differ mainly in how investment is defined, which is where most disagreements live. The tax code draws the sharper line: money you deduct this year is spent, money you capitalize is invested.

Cost per acquisition

Cost per acquisition is what you paid for each counted conversion, spend divided by conversions. Google expands the abbreviation as cost per action, not acquisition. It inherits whatever your conversion column counts, so two businesses can report the same figure and mean entirely different things.

Customer lifetime value

Customer lifetime value is the dollar value of a customer relationship, based on the present value of projected future cash flows. The LTV column in your analytics is a different quantity: measured revenue from users the tool could identify, sampled above a limit, and often zero even at the 90th percentile.

Return on ad spend

Return on ad spend compares what the advertising produced against what it cost. Google reports it as conversion value divided by cost and shows a percentage. Microsoft divides revenue by spend and shows a ratio. Neither is net of your own costs, so it is not profit.

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