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SBA Loan Calculator

Estimate a monthly payment in seconds, then apply if it fits your business.

Illustrative Estimate
No Impact to Credit
Matched to Real Programs
Apply When Ready

What is a SBA Loan calculator?

An SBA loan calculator estimates the monthly payment on an SBA-backed loan, using the amount, term, and rate you enter. SBA loans often come with longer repayment terms than conventional business loans, which is why the default term on this calculator is set longer than our general loan calculator.

Use it to explore how a longer term or a different rate changes your estimated payment – useful context before discussing specific SBA programs with a funding specialist.

Estimated monthly payment

Illustrative estimate only. Actual SBA loan rates, terms, and payment amounts depend on your business profile, the specific SBA program, and lender qualification. Not a commitment to lend.

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Amortization Schedule

How each payment splits between principal and interest over time.

Month Payment Principal Interest Balance

What is the SBA Loan formula?

SBA loan payments follow the same amortizing loan formula as a conventional term loan – principal, monthly interest rate, and number of monthly payments combine to produce a fixed monthly payment. What differs between SBA and conventional loans is typically the term length and rate structure available, not the underlying payment math.

Standard amortizing payment formula:

Payment = P × (r × (1 + r)n) / ((1 + r)n − 1)

Where P is the funding amount, r is the monthly interest rate (annual rate ÷ 12), and n is the number of monthly payments (term).

Frequently asked questions

The SBA guarantee reduces risk for lenders, which can make longer repayment terms and larger loan amounts available compared to some conventional financing options.
SBA loans typically involve a longer approval process than other funding types due to the documentation required. Your funding specialist will give you a realistic timeline for your specific program.
This depends on the specific SBA program and loan amount. Your funding specialist will explain the requirements for your matched program.
No — this estimate uses the standard amortization formula applied to the amount, term, and rate you enter. Actual SBA loan terms depend on the specific SBA program, your qualification, and the lender, and can differ from what you test here.
SBA loans often allow longer terms than conventional loans, which is why the default term here is set higher — stretching the term further lowers the monthly payment but increases total interest paid over the life of the loan.
SBA loan rates are typically tied to a base rate plus a lender spread, which affects how much of each payment goes to interest. Test a few rate scenarios here to see how sensitive your estimated payment is.
Yes, this tool is for planning — adjusting the numbers doesn't submit an SBA application or affect your credit.
If the estimate looks workable, you can apply. A funding specialist reviews your business profile against SBA and other programs in our lending network and walks you through the documentation SBA loans typically require.

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