The True Cost of an SBA Loan: Fees, Rates & APR (2026)
Reviewed & current as of June 24, 2026
An SBA loan costs a rate (base + a margin the SBA caps by loan size) plus a one-time guaranty fee of ~2%–3.75%. Here's the real 2026 math, and the fee lenders can't pass to you.
An SBA 7(a) loan's cost is two things: the interest rate you pay over time, plus a one-time SBA guaranty fee at closing. As of 2026, lenders can charge a rate of up to a base rate (usually prime) plus 3.0%–6.5% depending on loan size, and an upfront guaranty fee of roughly 2%–3.75% of the guaranteed portion. A separate 0.55% annual fee exists, but the lender pays it, not you.
What you actually pay
Two costs land on the borrower:
- The interest rate: charged on the balance over the life of the loan.
- The upfront SBA guaranty fee: a one-time fee at closing, based on loan size.
A third cost, the 0.55% annual lender's service fee, is real, but the SBA forbids lenders from passing it to you (more on that below). So when you compare lenders, the two numbers that matter to your wallet are the rate and the guaranty fee.
SBA 7(a) interest rates in 2026 (the caps)
Most 7(a) loans carry a variable rate: a base rate (commonly the prime rate) plus a lender margin. The SBA caps that margin by loan size, and as of 2026 the caps are:
- $50,000 or less: base rate + up to 6.5%
- $50,001–$250,000: base rate + up to 6.0%
- $250,001–$350,000: base rate + up to 4.5%
- Over $350,000: base rate + up to 3.0%
Two things to notice: bigger loans hit lower margin caps, and these are maximums, not what every lender charges. The margin is negotiable, so the same loan can cost meaningfully less at one lender than another. (Rates as of 2026. Confirm the current base rate with your lender.)
The SBA guaranty fee (the big one-time cost)
For loans approved in fiscal year 2026 (October 1, 2025 through September 30, 2026), the upfront guaranty fee, charged on the guaranteed portion of the loan, not the whole amount, is:
- $150,000 or less: 2%
- $150,001–$700,000: 3%
- $700,001–$5,000,000: 3.5% on the guaranteed portion up to $1M, plus 3.75% on the part above $1M
The SBA guarantees 85% of loans of $150,000 or less and 75% of larger loans, so the fee applies to that guaranteed slice. Example: on a $500,000 loan (75% guaranteed = $375,000), the 3% fee is on $375,000, about $11,250, not $15,000.
Some borrowers pay no guaranty fee: many loans to small manufacturers (up to $950,000), veteran-owned SBA Express loans, and certain working-capital programs are fee-exempt in FY2026.
The fee you should NOT pay
You may see a 0.55% annual service fee mentioned. It's charged on the outstanding guaranteed balance, but it's the lender's cost, and the SBA prohibits passing it to the borrower. If a lender tries to add it to your bill, that's a red flag worth questioning.
What about a 504 loan?
A 504 loan is structured and priced differently: part of it comes from a Certified Development Company at a fixed, below-market rate pegged to the 10-year U.S. Treasury, with 10-, 20-, or 25-year terms. It funds fixed assets only (buildings, land, heavy equipment), no working capital. If you're weighing the two, see SBA 7(a) vs 504: which fits what you're buying.
Estimate your real cost
The two levers are loan size (which sets both your fee tier and your rate cap) and the rate your lender actually offers within the cap. Because that rate is negotiable, the single biggest thing you control is which lender you take it to. An active SBA lender that competes for your deal will price it better than a bank that rarely writes them.