Amortizing vs Interest-Only: Which Loan Structure Fits Your Business?
When a small business takes out a loan, the interest rate isn't the only thing that determines how much you'll actually pay — the repayment structure matters just as much. The two most common structures are amortizing loans, where each monthly payment covers both principal and interest, and interest-only (bullet) loans, where you pay only interest during the term and repay the full principal in one lump sum at maturity.
With an amortizing loan, the outstanding balance shrinks with every payment, so the amount of interest charged each month also decreases over time. This means the total interest paid over the life of the loan is generally lower than an interest-only structure with the same rate and term, because interest-only loans keep charging interest on the full, unreduced principal the entire time.
That said, interest-only loans have a real advantage: monthly payments stay low and predictable during the term, freeing up cash flow for businesses that are still ramping up revenue or managing tight working capital. The tradeoff is a large lump-sum payment due at maturity, so borrowers need a solid plan — refinancing, a revenue milestone, or savings — to cover that final payment.
Enter your loan amount, annual rate, and term above to see exactly how much more you'd pay in total interest with an interest-only structure compared to amortizing, and use that comparison to negotiate terms or choose the structure that fits your cash flow.
Frequently Asked Questions
An amortizing loan splits each payment between principal and interest, so the balance and interest charged shrink over time. An interest-only loan only charges interest during the term, with the full principal due at maturity.
Amortizing loans almost always cost less in total interest because the principal balance decreases every month, reducing the amount interest is charged on.
Interest-only loans keep monthly payments low during the term, which can help businesses with tight early cash flow or those expecting revenue to grow before the lump-sum principal is due.