How to use the SBA business loan calculator
Two questions come up before any business loan: how much a lender is likely to advance, and what the payment will look like. This calculator estimates a revenue-based limit, subtracts debt you already carry, applies the SBA program maximum, then amortizes the amount you want so you can see the monthly payment and total interest.
The revenue limit share is not a statutory number. It stands in for the underwriting rule of thumb a lender uses, so replace the placeholder with the figure your banker or CDC quoted. The program maximum field holds the current SBA cap for the 7(a) or 504 program you are applying under.
SBA 7(a) loans carry a maximum interest rate tied to a base rate plus a spread, and an upfront guaranty fee based on the guaranteed portion and term. Both change with SBA notices, so the rate and fee are editable rather than fixed. Figures reflect 2026 program structure.
Nothing here is an approval or a quote. Real underwriting looks at debt service coverage, personal guarantees, collateral, industry and credit history, and closing costs beyond the guaranty fee may apply. Confirm current program terms with an SBA lender or your local SBA district office.
Frequently Asked Questions
No. The SBA caps the loan size by program, but how much a lender will actually advance depends on cash flow, debt service coverage, collateral and credit. Use the ratio your lender quoted rather than the placeholder.
A 7(a) loan is a general purpose loan for working capital, equipment or real estate, while a 504 loan pairs a bank loan with a CDC debenture for fixed assets such as buildings and heavy machinery. Program maximums differ, so enter the one that applies.
The SBA charges an upfront guaranty fee based on the guaranteed portion and the term, and it is usually paid at closing or financed into the loan. Fees change with each SBA fee notice, so the rate is editable.