SBA Loan Calculator
Estimate payments on an SBA 7(a) or 504 loan using the current published rate ceilings and debenture pricing.
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Basic Qualifications
Estimates are for illustration only. Actual rates and terms depend on your lender and your qualifications.
Current SBA Rate Ceilings
The SBA does not set one rate. For 7(a) loans it caps the spread a lender may add to a base rate, and the cap falls as the loan gets larger. The prime rate below is the base most lenders use.
| Loan size | Variable-rate ceiling | At today's prime |
|---|---|---|
| $50,000 or less | Prime + 6.50 points | 13.25% |
| More than $50,000, up to $250,000 | Prime + 6.00 points | 12.75% |
| More than $250,000, up to $350,000 | Prime + 4.50 points | 11.25% |
| More than $350,000 | Prime + 3.00 points | 9.75% |
| Loan size | Fixed-rate ceiling | At today's prime |
|---|---|---|
| $25,000 or less | Prime + 8.00 points | 14.75% |
| More than $25,000, up to $50,000 | Prime + 7.00 points | 13.75% |
| More than $50,000, up to $250,000 | Prime + 6.00 points | 12.75% |
| Over $250,000 | Prime + 5.00 points | 11.75% |
Prime rate: 6.75% as of September 11, 2026. SBA 504 25-year debenture: 5.41% (September 2026). 20-year debenture: 5.34% (September 2026). These are the published ceilings and pricing, not a quote. A lender may charge less than the ceiling, and the 504 debenture is only part of a 504 deal.
How SBA Payments Actually Work
7(a) loans amortize. Each payment covers the interest accrued that month and puts the rest against the balance, so the payment stays level while the split shifts toward principal over time. That is the formula this calculator uses. A variable-rate 7(a) loan adjusts when the base rate moves, so treat the payment as today's payment, not a fixed one for the next decade.
504 loans are two loans. A typical 504 project pairs a bank loan on roughly half the project with a fixed-rate SBA debenture on about 40%, and the borrower contributes the rest. The debenture portion is fixed for its full term, which is why 504 pricing is quoted monthly and separately. To estimate a whole 504 project, run the debenture portion here and the bank portion on the business loan calculator, then add the two payments.
Fees are not in the payment. SBA loans can carry a guaranty fee, packaging and closing costs, and for 504 an ongoing servicing component. Those change what the financing costs you even when the monthly payment looks the same, which is the same trap that makes two identical-looking offers cost different amounts. If you are comparing structures rather than SBA options, the standard business loan calculator is the better starting point.
The ceiling is not the offer. The figures above are the most a lender may charge under the program rules. Strong files are often priced below the cap, and pricing moves with the base rate, so the useful question is what your lender will actually quote, not what the maximum allows.
SBA Calculator FAQ
A 7(a) loan amortizes, so the payment comes from three numbers: the amount borrowed, the rate, and the term in months. Enter them above. For a 504 project, estimate the debenture portion and the bank portion separately and add the payments, because the two pieces carry different rates and terms.
There is no single SBA rate. The SBA caps the spread a lender may add over a base rate for 7(a) loans, and the cap depends on the loan size, so smaller loans carry higher ceilings. SBA 504 debenture pricing is set monthly and is fixed for that portion's life. The figures on this page show the current published ceilings and pricing with the date each carries.
It depends entirely on the rate and the term. The same $1,000,000 costs a very different amount each month over 10 years than over 25, and the longer term raises total interest even though the payment falls. Enter $1,000,000 above and move the term slider to see both sides of that trade.
Yes, the 7(a) program goes up to $5 million, so $1 million is well inside the limit. The program cap is not what you qualify for, though. Lenders still underwrite cash flow, debt service coverage, collateral and guarantees, and the business has to support the payment.
Use of proceeds usually decides it. 7(a) is the more flexible program and handles acquisitions, working capital, equipment and mixed-use projects. 504 is built around owner-occupied real estate and long-lived fixed assets, with a fixed-rate debenture portion. A project centered on land and buildings often fits 504; one that includes goodwill, inventory or operating cash usually fits 7(a).
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