James Okafor
Understanding the true cost of a business loan before you sign is one of the most important steps any entrepreneur can take. Whether you are considering an SBA 7(a) loan, a bank term loan, or a merchant cash advance, knowing your monthly payment, total interest burden, and payoff timeline lets you compare offers on a level playing field and negotiate from a position of knowledge.
How Business Loan Interest Works
| Loan Type | Typical Term | Key Characteristic | APR Range (Approximate) |
|---|---|---|---|
| SBA 7(a) Loan | 7-10 years | Amortizing, government-backed | Varies by lender |
| Bank Term Loan | 3-5 years | Amortizing, fixed payments | Varies by lender |
| Equipment Loan | 3-7 years | Amortizing, secured by asset | Varies by lender |
| Merchant Cash Advance (MCA) | 6-12 months | Factor rate, daily/weekly repayment | 40%-200%+ (equivalent) |
| Working Capital Line | Variable | Interest-only or amortizing | Varies by lender |
Traditional business loans use an amortizing structure, where each monthly payment covers both interest and a portion of the principal. Early on, most of your payment goes toward interest. As the balance shrinks, more goes toward principal. This is why loan term matters so much: a longer term lowers monthly payments but dramatically increases what you pay over the life of the loan.
The key variables are:
- Principal (P): The amount borrowed.
- Annual interest rate (APR): Expressed as a yearly percentage; your lender divides this by 12 to get the monthly rate.
- Term (n): The number of monthly payments. 36 months (3 years) is common for equipment and working capital; SBA loans often run 7-10 years.
- Debt service coverage ratio (DSCR): Your monthly revenue divided by your monthly loan payment. Lenders typically require 1.25× or higher.
Factor Rates vs. APR: A Critical Distinction
Merchant cash advances (MCAs) and some online short-term lenders advertise a factor rate instead of an APR. A factor rate of 1.35 means you repay $1.35 for every $1.00 borrowed. Sounds straightforward, but the actual annualized cost depends entirely on how quickly you repay.
On a 6-month repayment schedule, a 1.35 factor rate can translate to an APR well above 60%. On a 12-month schedule it’s lower, but still far above most bank rates.
The calculator below lets you enter any factor rate and repayment term to see the equivalent APR instantly, making it easy to compare MCA offers against traditional bank term loans.
Standard Term Loan
Factor Rate → APR Converter (MCAs & Short-Term Loans)
âš Disclaimer: This calculator is for estimation only and does not constitute financial advice. Actual loan terms vary by lender. Consult a licensed financial professional before taking on business debt.
How to Use These Results
Once you have your monthly payment figure, run it against your current cash flow. A solid rule: your total monthly debt payments (all business loans combined) should not exceed 10-15% of gross monthly revenue for a stable business. Fast-growing businesses with predictable revenue can handle higher ratios, but you’re taking on more risk when revenue dips.
If the total interest figure looks high, consider making extra principal payments when cash flow allows. Even one extra payment per year on a 5-year loan can cut months off the term and save hundreds in interest.
For more on qualifying for financing, see our guides on small business loan types and how to build business credit from scratch.
Disclaimer
This calculator is for informational and educational purposes only. It does not constitute financial advice. Loan terms, fees, and qualification requirements vary by lender. Always review the full loan agreement and consult a qualified financial professional before committing to any financing.
Sources
Disclosure: As an Amazon Associate, we earn a small commission from qualifying purchases at no extra cost to you. We only recommend products that genuinely support the topics covered in this article.
- Mastering QuickBooks 2025 (~$32), The most comprehensive QuickBooks 2025 guide, covers bookkeeping, payroll, invoicing, tax prep, and cash flow.
- Accounting for Small Business Owners (~$14), Beginner-friendly accounting guide covering basic bookkeeping, financial statements, and managing business taxes.
Recommended Resources
Disclosure: As an Amazon Associate, we earn a small commission from qualifying purchases at no extra cost to you. We only recommend products that genuinely support the topics covered in this article.
- Mastering QuickBooks 2025 (~$32), The most comprehensive QuickBooks 2025 guide, covers bookkeeping, payroll, invoicing, tax prep, and cash flow.
- Accounting for Small Business Owners (~$14), Beginner-friendly accounting guide covering basic bookkeeping, financial statements, and managing business taxes.
