Factor Rates vs. Interest Rates: The Math Lenders Hope You Ignore
Understand the critical difference between factor rates and interest rates, how to calculate true APR, and why this matters for comparing loan costs.
A lender offers you $100,000 with a "1.25 factor rate." Another offers $100,000 at "25% interest." Which costs more? If you cannot immediately answer, you are not alone — and that confusion benefits lenders.
Factor rates and interest rates measure cost completely differently. Understanding the difference can save you tens of thousands of dollars.
What Is a Factor Rate?
A factor rate is a simple multiplier applied to your borrowed amount. Borrow $100,000 with a 1.25 factor rate, and you repay $125,000. Period.
| Factor Rate | Borrow $100,000 | Total Repayment | Cost |
|---|---|---|---|
| 1.10 | $100,000 | $110,000 | $10,000 |
| 1.20 | $100,000 | $120,000 | $20,000 |
| 1.25 | $100,000 | $125,000 | $25,000 |
| 1.30 | $100,000 | $130,000 | $30,000 |
| 1.40 | $100,000 | $140,000 | $40,000 |
| 1.50 | $100,000 | $150,000 | $50,000 |
Key Difference
Factor rates calculate cost on the ORIGINAL amount for the ENTIRE term. Interest rates calculate cost on the DECLINING balance as you pay down. This matters enormously.
What Is an Interest Rate?
An interest rate (APR) charges you based on what you currently owe. As you make payments and reduce your balance, your interest cost decreases. This is how mortgages, car loans, and most traditional loans work.
On a $100,000 loan at 15% APR over 3 years, you pay ~$24,700 in interest. But that interest is calculated on a declining balance — you are not paying 15% on $100,000 every year.
Why Factor Rates Cost More Than They Appear
Here is the problem: a 1.25 factor rate sounds like "25% cost." But the equivalent APR is much higher because you pay that 25% on the original amount even as you pay it down.
| Factor Rate | Term | Approximate APR Equivalent |
|---|---|---|
| 1.15 | 6 months | 55-65% |
| 1.15 | 12 months | 28-32% |
| 1.20 | 6 months | 75-85% |
| 1.20 | 12 months | 38-42% |
| 1.25 | 12 months | 48-52% |
| 1.25 | 18 months | 32-36% |
| 1.30 | 12 months | 58-62% |
| 1.30 | 18 months | 38-42% |
| 1.40 | 12 months | 78-82% |
| 1.40 | 18 months | 52-56% |
The Hidden Math
A 1.25 factor rate over 12 months is NOT 25% APR. It is closer to 50% APR. Why? Because you repay daily/weekly, reducing your average balance, but you still pay based on the original $100,000.
The Calculation
Here is a simplified way to estimate APR from a factor rate:
- Step 1: Calculate total cost. ($100,000 x 1.25 = $125,000. Cost = $25,000)
- Step 2: Calculate average balance. (For daily payments, roughly half the original: $50,000)
- Step 3: Annualize the cost. ($25,000 cost / 12 months x 12 = $25,000 annual cost)
- Step 4: Divide by average balance. ($25,000 / $50,000 = 50% effective APR)
Quick Estimate
For a 12-month term with daily payments, multiply (factor rate - 1) by roughly 2 to estimate APR. So 1.25 factor ≈ 0.25 x 2 = 50% APR estimate. For 6-month terms, multiply by roughly 4.
Real-World Comparison
Let us compare two $100,000 financing options:
| Feature | Factor Rate Product | Traditional Term Loan |
|---|---|---|
| Amount | $100,000 | $100,000 |
| Stated Rate | 1.25 factor | 18% APR |
| Term | 12 months | 36 months |
| Payment | ~$2,400/week | ~$3,615/month |
| Total Repayment | $125,000 | $130,140 |
| Total Cost | $25,000 | $30,140 |
| Effective APR | ~50% | 18% |
The factor rate product has a lower total dollar cost ($25,000 vs. $30,140) but is actually far more expensive when measured by APR. Why? Because you are paying it back in 12 months with daily/weekly payments instead of 36 months with monthly payments.
If both were 12-month terms, the term loan at 18% APR would cost ~$10,000 in interest — less than half the factor rate product.
Why Do Lenders Use Factor Rates?
Factor rates are not inherently deceptive, but they make costs less transparent:
- Simplicity — "Multiply by 1.25" is easier to explain than amortization
- Marketing — "1.25 factor" sounds cheaper than "50% APR"
- Legal — Some factor rate products (like MCAs) are technically not loans and avoid APR disclosure requirements
- Comparison difficulty — Harder to compare against traditional loans
The Transparency Problem
Traditional loans require APR disclosure by law (Truth in Lending Act). Merchant cash advances and some other factor-rate products may not be legally required to disclose APR. Always ask for total repayment amount and calculate the effective APR yourself.
Which Products Use Which Rate Type?
| Product Type | Typically Uses | Payment Frequency |
|---|---|---|
| Bank term loans | Interest rate (APR) | Monthly |
| SBA loans | Interest rate (APR) | Monthly |
| Lines of credit | Interest rate (APR) | Monthly |
| Merchant cash advances | Factor rate | Daily/Weekly |
| Revenue-based financing | Factor rate | Daily/Weekly |
| Short-term online loans | Often factor rate | Daily/Weekly |
Protecting Yourself
Before signing any financing agreement:
- Always ask for total repayment amount — This is the clearest cost measure
- Request APR disclosure — Even if not required, reputable lenders will provide it
- Calculate effective APR yourself — Use online calculators if needed
- Compare apples to apples — Convert everything to APR before comparing
- Watch for prepayment — Factor rate products often have no prepayment benefit (you pay the full factor regardless)
The Bottom Line
Factor rates are not scams — they are a different way of expressing cost. But they can make expensive financing look cheaper than it is.
A 1.20 factor rate sounds reasonable. The equivalent 40-60% APR does not. Lenders know this.
Before you take any financing with a factor rate, calculate the true APR. You might find that "expensive" traditional financing at 15-20% APR is actually much cheaper than "affordable" factor-rate products.
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Not Financial Advice: The information provided in this article is for general informational purposes only and does not constitute financial, legal, or professional advice. You should consult with qualified professionals before making any financial decisions.
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