The rate is two numbers
Almost every 7(a) loan is written as variable rate: the base rate plus a spread. The base is the prime rate as published by major US banks. The spread is the lender’s margin, added on top, and it is the only part of your rate a lender actually negotiates.
Because the base is public, you can reconstruct any quote. A lender offering “prime plus 2.75” is offering 9.75% at today’s prime. If prime moves a year later, the note says the payment moves with it, which is the feature and the risk of a variable rate.
What your spread depends on
How the caps work, and why two lenders can quote the same borrower differently, is its own topic: see how SBA rates are set for the mechanics.
- Loan size. Larger loans carry tighter spreads. The SBA caps the maximum spread by size bracket, so a $3 million loan cannot be priced like a $75,000 one.
- Term. Longer terms usually mean slightly wider spreads, because the lender carries the risk longer.
- Collateral. Hard, liquid collateral trims the spread; thin collateral widens it.
- Personal credit and business financials. The same risk logic as any lending, applied at the margin.
- Lender appetite. Desks differ on the same file. This is why three quotes beat one, and why the advertised floor is not your rate.
What current prime implies for payments
The table below prices one loan, $300,000 over 10 years, at several modeled rates built from today’s prime. The spreads are illustrative, not offers. Your note fixes the spread; prime moves the rest.
| Modeled spread | Modeled rate | Monthly payment on $300,000 / 10 years |
|---|---|---|
| Prime + 2.50 | 9.50% | about $3,882 |
| Prime + 2.75 | 9.75% | about $3,923 |
| Prime + 3.00 | 10.00% | about $3,964 |
| Prime + 3.50 | 10.50% | about $4,048 |
Fixed or variable
Standard 7(a) loans are overwhelmingly variable, pegged to prime with periodic resets defined in the note. The 504 program is the exception that proves the rule: its debenture piece carries a long fixed rate, which is a real part of why real estate buyers choose it. If rate certainty matters to your planning, that asymmetry between the programs should be in your decision, not discovered at closing.
How SBA rates compare to conventional business loans
A fair comparison has to hold term and structure constant, and when you do, the picture is less obvious than the sticker rate suggests. Conventional bank term loans often carry lower spreads but much shorter maturities, frequently with a balloon payment after five years. An SBA loan at a nominally higher rate, amortized over 10 to 25 years with no balloon, can have a monthly payment a third or half the size.
That is a trade, not a victory: lower payment, more total interest. For owner-operated businesses that need cash flow room to operate and grow, the trade is usually worth it. For a short-horizon project that will be refinanced or sold quickly, it may not be. Price both honestly before deciding.
Model it before you negotiate it
The SBA loan cost calculator builds the payment, the upfront guarantee fee and first-year cost from your amount, term and program, and shows the modeled rate range behind the numbers. The 7(a) payment calculator goes deeper on 7(a)-specific terms. Walking into a lender conversation with those numbers changes the conversation from “what can I afford” to “here is what this structure costs, what is your best spread.”