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Money calculators · Updated September 3, 2026

SBA Loan Calculator

Estimate the monthly payment on an SBA-backed business loan and see what the guarantee fee adds to the true cost, whether you pay it upfront or roll it in.

SBA loan payment calculator

SBA publishes the schedule each October; 2% to 3.75% of the guaranteed portion is typical for larger loans.
Monthly payment$3,474.58on a financed balance of $257,500
Guarantee fee
$7,500.00
Total interest
$159,449
Total cost of borrowing
$166,949

How the SBA loan cost is calculated

fee       = loan amount × guarantee fee rate
financed  = loan amount + fee (if financed)
payment   = financed × r ÷ (1 − (1 + r)^−months),  r = rate ÷ 12
total cost = payments + fee paid upfront − loan amount

SBA fees are formally charged on the guaranteed portion (75% to 85% of the loan) at rates set each fiscal year; entering the effective percentage of the whole loan keeps the input simple. Variable-rate loans will drift from this estimate as prime moves.

Frequently asked questions

How are SBA 7(a) loan payments calculated?

Like any amortized loan: payment = amount × r ÷ (1 − (1 + r)^−n) with r the monthly rate and n the number of months. 7(a) loans are usually variable-rate (prime plus a spread set by SBA rules), so treat the payment as an estimate at today's rate.

What is the SBA guarantee fee?

An upfront fee the lender pays SBA on the guaranteed portion of the loan and normally passes to the borrower. SBA sets the schedule each fiscal year by loan size and term; fees have ranged from 0% on small loans to about 3.75% on the guaranteed portion of large loans. Enter the fee as a percentage of the loan amount and choose whether it is financed.

What are typical SBA 7(a) terms?

Up to 10 years for working capital and equipment and up to 25 years for real estate; maximum loan amount $5 million. Rates are capped at prime plus a spread that depends on loan size.

Does the calculator include closing costs or packaging fees?

No. Lender packaging fees, closing costs and any collateral appraisal are extra; add them to the loan amount to approximate their effect if they are financed.

Can I prepay an SBA loan?

Yes. 7(a) loans with terms of 15 years or more have a prepayment penalty in the first three years (5%, 3%, 1%) if you prepay 25% or more; shorter terms have none.

Sources and updates

Figures are for tax year 2026 and were checked against the sources below on . Rates change every January; we review every data file at the start of each year and whenever a state announces a mid-year change.

This calculator gives estimates for information only and is not tax, legal or financial advice. Your employer's payroll system, local taxes, benefits and year-to-date wages can change the exact amounts on your pay stub. See how we calculate.