SBA loan basics
Short answer
SBA 7(a) loan interest rates are primarily based on a fluctuating prime rate or other base rates, plus a fixed spread determined by the lender. They can be either fixed or variable.
The SBA sets maximum allowable interest rates for 7(a) loans, which are typically tied to a base rate (like the Wall Street Journal Prime Rate, Term SOFR, or Fixed Rate Treasury). Lenders then add a 'spread' or 'markup' on top of this base rate, which varies based on loan size, term, and borrower risk profile, staying within SBA's maximums.
A lender offers a 7(a) loan with an interest rate of Prime + 2.75%. If the Prime Rate is 8.5%, the borrower's initial rate would be 11.25%. This rate could fluctuate if it's a variable loan.
Insider move
Lenders must ensure the interest rate charged adheres to the SBA's maximum allowable rates. They consider the borrower's creditworthiness, the loan's risk profile, and market conditions to determine an appropriate spread within the SBA's guidelines.
13 CFR Part 120 — Business Loans
Office of the Federal Register · Federal regulation
7(a) Loan Program — Terms, Conditions, and Eligibility
U.S. Small Business Administration · Official SBA source
SOP 50 10 - Lender and Development Company Loan Programs
7(a) Alternative Base Rate Options
Last checked 2026-06-13. Official sources control — verify before relying on any rule for a live deal.
Last reviewed 2026-06-13 · SBA sources checked through 2026-06-13. DealRoom analysis of public SBA 7(a) lending records (FY2020–present). Grounded in the current SBA rulebook; verify against the official sources above before relying on it for a live deal. Not legal, tax, or financial advice, and not an approval decision.
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