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SBA Loan Calculator

Estimate payments at a constant interest rate and compare paying a quoted upfront fee now with financing it into the loan.

SBA loan payment estimate

Enter borrower-payable upfront fees from your lender quote. This tool does not derive the SBA guaranty fee schedule.
Estimated monthly payment$3,373.38on a modeled financed balance of $250,000.00
Upfront fee included
$0.00
Total interest
$154,804.53
Interest plus fee
$154,804.53

Fees are excluded until entered. The example rate is illustrative. This monthly model assumes the rate stays constant and any chosen fee financing is allowed. It excludes other fees, penalties and changes in rate.

Quoted fee versus the SBA fee schedule

SBA publishes fee rules by fiscal year, and the guaranty percentage can differ across programs. Entering a quoted dollar amount avoids treating a guaranty-fee percentage as a percentage of the entire loan. Confirm the fee and whether it can be financed with your lender.

How the payment and borrowing cost are calculated

Financed balance = loan amount + quoted fee, if financed
Monthly rate     = annual interest rate ÷ 12
Payment          = financed balance × r ÷ (1 − (1 + r)^−months)
Borrowing cost   = scheduled payments + fee paid upfront − original loan amount

Years convert to the nearest whole month. The regular payment is rounded upward to a cent; the final payment is adjusted to the remaining amount due. Interest retains precision until display. The calculated cost includes the entered fee exactly once, whether paid upfront or financed.

Frequently asked questions

Does this calculate the official SBA guaranty fee?

No. Enter the borrower-payable fee amount from your lender’s quote. SBA fee schedules depend on program, approval timing, loan characteristics and the guaranteed portion. A percentage of the guaranteed portion is not the same as that percentage of the entire loan.

What does financing an upfront fee change?

It increases the modeled loan balance and interest. For the illustrative $250,000 loan at 10.5% over ten years with a $5,000 fee, the payment is $3,373.38 when the fee is paid upfront or $3,440.85 when financed. The fee and financing must be permitted by the actual loan terms.

Does the calculator assume my fees are zero?

Fees are excluded until you enter an amount. The initial zero is not a statement about the fee on an actual SBA loan. Include the borrower-payable upfront costs you want to model and check the lender’s quote for other costs.

Can I enter APR instead of the interest rate?

Use the contractual interest rate for this payment formula. An APR may include fees, so applying it to the balance and adding the same fees again can distort the estimate.

What happens if the loan rate changes?

The projection holds the entered rate constant. A variable-rate loan can have different payments and total interest when the rate adjusts. Recalculate with another assumed rate to compare scenarios; this tool does not forecast future rates.

Does this determine SBA eligibility or prepayment charges?

No. Eligibility, program limits, collateral requirements, fee rules and early-payment charges must be checked with the lender and current SBA guidance. This is an amortization and quoted-fee comparison.

Sources and updates

Methods and figures reviewed on . Provider rates and terms can change; check the linked source and your own account terms.

This calculator gives estimates for information only and is not tax, legal or financial advice. Actual outcomes depend on the assumptions, timing, taxes, fees and terms that apply to you. See how we calculate.