For SBA lenders
Short answer
No, lenders cannot unilaterally increase the spread over the base rate on a variable rate SBA 7(a) loan after the loan has been disbursed, although the actual interest rate will fluctuate with the chosen base rate.
The interest rate for a variable rate 7(a) loan is determined by a base rate (e.g., Prime) plus a fixed spread. While the base rate itself fluctuates, the spread established at authorization cannot be increased by the lender during the loan's term.
A borrower has a 7(a) loan with a rate of Prime + 2.75%. If the Prime Rate increases from 7.00% to 7.25%, the borrower's rate automatically becomes 10.00%. The lender cannot decide to change the spread to Prime + 3.00% without a new authorization.
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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