Estimate your SBA loan payments and total financing cost
Typical SBA: Prime + 2.25% to 4.75%
0% for loans under $500K, up to 3.75% for larger
Monthly Payment
$0.00
Effective APR: 0%
Total Interest
$0.00
Guarantee Fee
$0.00
Total Payments
$0.00
Total Cost
$0.00
An SBA loan calculator is a financial tool specifically designed to help small business owners estimate their loan payments for Small Business Administration (SBA) backed loans. It calculates monthly payments, total interest, guarantee fees, and the complete cost of financing.
SBA loans are highly sought after because they offer lower interest rates, longer repayment terms, and lower down payment requirements compared to conventional business loans. The government guarantee reduces lender risk, enabling better terms for borrowers. Understanding these costs is essential for making informed financing decisions.
The calculator accounts for unique SBA loan features including guarantee fees, which are percentage-based charges added to the loan amount. This provides a more accurate picture of your total financial obligation compared to standard loan calculators.
SBA loan payments are calculated using the standard amortization formula, but with additional considerations for guarantee fees. Here's the process:
Total Loan Amount = Requested Amount + Guarantee Fees
Monthly Payment = P × [r(1+r)^n] ÷ [(1+r)^n − 1]
Total Interest = (Monthly Payment × n) − Total Loan Amount
Total Payments = Monthly Payment × n
Total Cost = Loan Amount + Total Interest + Fees
$250,000 SBA 7(a) loan at 9% for 10 years:
| Requested Amount | $250,000.00 |
| Guarantee Fee (2%) | $5,000.00 |
| Total Loan Amount | $255,000.00 |
| Interest Rate | 9% |
| Term | 10 years (120 months) |
| Monthly Payment | $3,230.34 |
| Total Interest | $132,641.00 |
| Total Cost | $387,641.00 |
SBA loan interest rates are determined by the Prime rate plus a margin set by the SBA. As of 2026, SBA 7(a) loan rates range from approximately 8% to 11%, depending on the loan amount and term. This is significantly lower than many alternative business loans.
The interest rate structure varies by SBA program:
The lower interest rates on SBA loans can save borrowers tens of thousands compared to conventional or alternative financing.
SBA loan terms are longer than many conventional business loans, providing lower monthly payments. The maximum terms are:
Longer terms mean lower monthly payments, making SBA loans more affordable for businesses with limited cash flow. However, longer terms also mean more total interest paid over the life of the loan.
SBA loans include several fees that add to the total cost of borrowing. The primary fee is the SBA guarantee fee, which ranges from 0% to 3.75% depending on the loan amount and term. Additional costs include packaging fees, closing costs, and servicing fees.
Here are typical SBA guarantee fees:
Your SBA loan monthly payment is calculated based on the total loan amount (including fees), interest rate, and loan term. The payment remains fixed throughout the loan term unless the interest rate is variable.
For businesses, the monthly payment must fit within the operating budget. SBA lenders typically look for a debt service coverage ratio (DSCR) of 1.15 or higher for most loans, and 1.25+ for larger loans.
Before applying for an SBA loan, calculate your monthly payment to ensure it's affordable. Consider seasonal revenue fluctuations and build in a buffer for unexpected expenses.