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Factor rate to APR calculator

A factor rate has no time in it. 1.35 means the merchant repays $1.35 for every dollar advanced, and nothing about that number tells you whether it is expensive — six months and eighteen months at the same factor are entirely different deals. Annualising is what makes an advance comparable to anything else on the table, and it is what California and New York now require in writing.

The deal

$

Typically 1.15–1.50. Below 1.2 is strong paper; above 1.45 is usually a later position.

months
Remittance

What it costs

Estimated APR
125.9%

IRR-derived, annualised. What a lender would have to charge to be equivalent.

Simple annualised
70.0%

Cost over advance, scaled to a year. Ignores the declining balance.

Total payback
$67,500
Total cost
$17,500

35¢ on every dollar advanced.

Daily payment
$535.71
Payments
126

Business days. Weekends and holidays do not debit.

The two rates differ because the simple figure pretends the merchant holds the full advance for the whole term. They do not — they start repaying the next business day. The APR line is the honest comparison against a bank quote, and it is roughly double the simple number for any typical advance.

The short answer

A 1.35 factor rate repaid daily over six months works out to roughly 126% APR — about double the 70% you get from the simple cost-over-advance calculation, because the merchant starts repaying the next business day rather than holding the full advance for the term.

How it is calculated

Total payback
Advance × factor rate. A $50,000 advance at 1.35 repays $67,500, of which $17,500 is cost.
Payment
Total payback ÷ number of payments. We count 21 business days a month and 252 a year, because weekends and holidays do not debit.
Simple annualised
Cost ÷ advance, scaled to twelve months. This is the number most people reach for, and it understates by roughly half because it pretends the merchant holds the whole advance for the whole term.
Estimated APR
The periodic rate that discounts the payment stream back to the advance, annualised — solved by bisection. This is what a lender would have to charge to be equivalent, and it is what disclosure regimes approximate.

Where it stops being reliable

  • State disclosure methodologies are prescribed and differ in their details. This is an estimate for comparison, not a compliant disclosure — if you need one of those, it comes from the funder.
  • Fees change the answer. Origination, underwriting and ACH fees are cost, and leaving them out flatters the rate.
  • A term is a modelling convenience. An advance with a genuine holdback has no fixed maturity, which is what the holdback calculator is for.

Questions

Repaid daily over six months on a $50,000 advance, roughly 126% APR. Over twelve months at the same factor it falls to about 63%, and over three months it rises to about 250%. The factor alone does not determine the rate — the term does at least as much work.

Because repayment starts immediately. A merchant taking $50,000 at 1.35 never has $50,000 for six months; the average outstanding balance across the term is closer to half that, so the same dollar cost is earned on half the money. That is the whole gap between the simple number and the APR.

It is the right way to compare one against a loan, which is the comparison merchants actually make. It is a poor description of the product itself, because an advance has no fixed term — that is why Utah and Georgia legislated against requiring one, and why California and New York require one anyway.

California and New York require an estimated annualised rate in their commercial financing disclosures. Georgia expressly does not, and Utah chose a dollar-cost disclosure instead. The other disclosure states are built around total cost and the payment schedule.

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