SBA loan basics
Short answer
The 'Prime Rate' is a benchmark interest rate that many SBA 7(a) variable loans are tied to, meaning your loan's interest rate will fluctuate as the Prime Rate changes.
SBA 7(a) loan interest rates are typically variable and capped at Prime Rate plus a spread. The Wall Street Journal Prime Rate is commonly used as the base rate. The spread depends on the loan amount and term but is subject to SBA-mandated maximums.
A borrower gets an SBA loan with an interest rate of Prime + 2.75%. If the Prime Rate is 8.50%, their initial rate is 11.25%. If Prime drops to 8.00%, their rate would become 10.75%.
Insider move
Lenders must ensure their charged interest rate, including the spread, adheres to the SBA's maximum allowable rates based on loan size and maturity. They also monitor changes in the Prime Rate.
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 2026-06-14. Official sources control — verify before relying on any rule for a live deal.
Last reviewed 2026-06-14 · SBA sources checked through 2026-06-14. 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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