Estimate monthly payments, total interest, SBA guarantee fees, and the total cost of an SBA 7(a) small business loan — with current rate guidance based on Prime plus the SBA spread for your loan size.
Each example uses the exact same formulas as the calculator above, with rates built from a 7.50% Prime rate plus the SBA spread for the loan size.
A small business borrows $50,000 for working capital at the suggested rate of 10.25% (Prime 7.50% + 2.75%) for 10 years. The guarantee fee is 0% because the loan is $150,000 or less.
Monthly Payment: $667.70
Total Paid: $80,123.40 · Total Interest: $30,123.40
Because this loan is under the $150,000 threshold, the SBA guarantee fee is waived — every dollar goes to principal and interest.
A business buys commercial real estate with a $500,000 SBA 7(a) loan at 10.25% for 25 years (the maximum real estate term). The 3.0% guarantee fee is financed into the loan, so the financed principal is $515,000.
Monthly Payment: $4,770.87
Total Paid: $1,431,262.17 · Total Interest: $916,262.17
Guarantee Fee: $15,000.00 (financed into the loan)
The 25-year term keeps the monthly payment manageable, but the long term nearly doubles the total interest compared with a 10-year loan.
A new startup borrows $25,000 at the suggested rate for small loans, 12.25% (Prime 7.50% + 4.75%), over 7 years. The guarantee fee is 0% for loans of $150,000 or less.
Monthly Payment: $444.67
Total Paid: $37,352.09 · Total Interest: $12,352.09
Smaller loans carry a higher spread (Prime + 4.75%), but the shorter 7-year term keeps total interest relatively low.
The SBA 7(a) program is the Small Business Administration's primary loan program. The SBA does not lend money directly — instead, it guarantees a portion of loans made by approved lenders, typically 50% to 90% depending on the loan size and program. That guarantee reduces the lender's risk, which makes credit available to small businesses that might not qualify for conventional financing, and often at better rates and terms.
Funds can be used for working capital, equipment, real estate, refinancing existing debt, and more. Loan amounts go up to $5 million, with repayment terms up to 10 years for working capital and equipment, and up to 25 years for owner-occupied real estate.
SBA 7(a) rates are negotiable between the lender and borrower, but they are capped by the SBA based on the Wall Street Journal Prime rate plus a spread that depends on the loan amount. This calculator suggests a rate using the current SBA spread structure — you can adjust it to match your lender's quote.
An SBA fee (0% to 3.75% depending on loan size) that covers the cost of the government guarantee. It can be financed into the loan or paid upfront.
The base rate published in the Wall Street Journal that SBA 7(a) rates are indexed to. Your final rate is Prime plus a spread of 2.25% to 4.75%.
A bank or non-bank lender authorized to originate SBA-guaranteed loans. The SBA guarantees a portion of the loan, not the borrower's payments.
There is no prepayment penalty on SBA 7(a) loans with terms under 15 years. Longer loans may carry a penalty in the first 3 years.
An SBA 7(a) loan is the Small Business Administration's flagship lending program, providing small businesses with financing of up to $5 million. The SBA doesn't lend the money itself — instead, it guarantees a portion of the loan (typically 50% to 90%), which reduces the risk for approved lenders and encourages them to extend credit to businesses that may not qualify for conventional bank financing.
Because the SBA backs a share of the loan, lenders can offer more attractive rates, longer repayment terms, and lower down payments than standard commercial loans. SBA 7(a) funds can be used for a wide range of purposes:
This calculator focuses on the standard SBA 7(a) structure: a fixed or variable rate tied to Prime, a government guarantee fee, and fully amortizing monthly payments. Understanding the full picture — payment, interest, and fees — before you apply helps you compare lender offers and plan your cash flow with confidence.
SBA 7(a) loans are priced at a negotiated rate that is capped at Prime plus a spread. The maximum spread depends on the loan amount, with smaller loans allowed to carry a higher spread because they cost more for the lender to service. The suggested rate structure used by this calculator is:
| Loan Amount | Maximum Rate (Prime + Spread) |
|---|---|
| $25,000 or less | Prime + 4.75% |
| $25,001 – $50,000 | Prime + 3.75% |
| $50,001 – $500,000 | Prime + 2.75% |
| Over $500,000 | Prime + 2.25% |
Rates may be fixed or variable. Variable-rate loans are pegged to the Prime rate and typically adjust quarterly or monthly; fixed-rate loans lock in a rate for the full term.
The SBA charges a one-time guarantee fee based on the guaranteed portion of the loan. The fee can be paid upfront or financed into the principal (which this calculator supports). The current fee structure by loan amount is:
| Loan Amount | Guarantee Fee |
|---|---|
| $150,000 or less | 0% (waived) |
| $150,001 – $700,000 | 3.0% |
| $700,001 – $1,000,000 | 3.5% |
| Over $1,000,000 | 3.75% |
Note that the fee is charged on the guaranteed portion of the loan, so the actual fee you pay may be lower than the full-table percentage for loans with partial guarantees. Lenders may also charge origination, servicing, and packaging fees, so always review the full loan estimate.
The SBA offers two main loan programs for small businesses, and choosing between them comes down to what you're financing. The 7(a) program is a general-purpose loan; the 504 program is specifically designed for fixed assets like real estate and heavy equipment.
Because 504 loans use a fixed-rate CDC debenture, they can offer attractive long-term fixed rates for real estate. But they can't fund working capital or inventory. If your business needs both real estate and operating cash, some borrowers combine a 504 loan for the building with a 7(a) loan for working capital. Use this 7(a) calculator for general-purpose financing, and ask your lender for a 504 quote when buying fixed assets.
⚠️ Important Disclaimer: This is an estimate only. Actual SBA rates, fees, terms, and eligibility depend on the lender, your credit profile, and current SBA rules, which change periodically. Contact an SBA-approved lender for a quote.