How is SBA 7(a) monthly payment calculated?

The monthly payment on an SBA 7(a) loan is the standard amortizing loan payment formula: M = P × (r(1+r)^n) / ((1+r)^n - 1), where P is loan amount, r is the monthly interest rate (annual rate divided by 12), and n is the number of months. Standard SBA 7(a) amortization is 25 years for real estate, 10 years for equipment, and 7-10 years for working capital.

What is the SBA 7(a) guarantee fee for 2026?

SBA guarantee fees are set annually. For fiscal year 2026, the general framework is: loans under $1 million pay 0% upfront guarantee fee; loans between $1M and $2M pay approximately 1.45% on the guaranteed portion up to $1M and 1.7% on the portion between $1M-$2M; loans over $2M pay approximately 3.5% on the portion up to $1M and 3.75% on the portion above. Fees change annually and by loan program — always confirm current rates with your lender.

What interest rate should I assume for an SBA 7(a) loan?

SBA 7(a) variable rates are typically Prime + a spread of 2.25% to 3.00% depending on loan size. Fixed rates are also available at similar or slightly higher pricing. As of mid-2026, Prime rate is around 7.75%-8.00%, putting typical SBA 7(a) rates in the 9.5%-11% range. Rates change frequently — check current Prime rate and your lender's spread.

What loan term should I use in the SBA 7(a) calculator?

Use 25 years (300 months) for owner-occupied commercial real estate. Use 10 years (120 months) for equipment loans. Use 7-10 years for working capital or business acquisition loans without real estate collateral. Loans with mixed use (some real estate, some working capital) get a blended term based on the SBA's weighted-average formula.

Tools · Calculator

SBA 7(a) Loan Calculator

Estimate the monthly payment, total interest, and SBA guarantee fee for a Standard 7(a) loan. Built by a former commercial banker — the same math your lender will use to size the deal.

Loan amount

SBA 7(a) max is $5,000,000

Interest rate

Typical range: Prime + 2.25% to 3.00%

Amortization

SBA max is 25 years for CRE, 10 for equipment/WC

SBA guarantee fee (upfront)

FY2026: 0% under $1M; 1.45-3.5% above — check current schedule

Estimated payment

Monthly Payment (P&I)

$—

Total Interest Over Loan Life

$—

SBA Guarantee Fee (Est.)

$—

Total Cost (Principal + Interest + Fee)

$—

What this calculator does — and what it doesn't

This tool gives you the fully-amortizing monthly principal and interest payment for a Standard SBA 7(a) loan, plus an estimated upfront SBA guarantee fee. It uses the standard mortgage amortization formula that every commercial lender uses to size the debt.

What it doesn't include (because they vary by lender, deal, and closing costs): packaging fees, third-party report fees (appraisal, environmental, business valuation), lender processing fees, title/escrow, prepaid interest, or the borrower's equity injection. These typically add 2%-5% of the loan amount to your out-of-pocket at closing.

How to use it

Loan amount: The total SBA 7(a) loan you're requesting. SBA 7(a) max is $5,000,000.
Interest rate: Variable SBA 7(a) rates are usually Prime plus a spread of 2.25%-3.00% depending on loan size. As of 2026, that puts most rates in the 9.5%-11% range. Fixed-rate SBA 7(a) is also available at similar pricing.
Amortization: 25 years for owner-occupied CRE; 10 years for equipment or business acquisition without real estate; 7-10 years for working capital.
SBA guarantee fee: Set annually by SBA. FY2026 default in this calculator is 3.5%, which is the top-tier fee for loans over $2M. Loans under $1M currently pay 0%. Confirm with your lender.

What actually determines your rate

The calculator asks you for a rate, but the rate your lender quotes is a function of five things:

Loan size: Bigger loans usually get tighter spreads — a $3M loan may price 25-50bps better than a $500K loan at the same lender.
Collateral: Real estate-secured 7(a) loans price better than unsecured working capital. The lender's recovery risk is different.
Borrower credit & cash flow: Strong DSCR (1.35x+ on real estate, 1.5x+ on operating) gets you closer to Prime + 2.25%. Marginal DSCR gets you closer to Prime + 2.75%-3.00%.
Industry: Some lenders won't touch certain industries at all; others specialize in them and price accordingly. Restaurants, gas stations, hotels, and healthcare all have specialized lenders and specialized pricing.
Which lender you're at: This is the one most borrowers miss. Two SBA 7(a) lenders can quote the same borrower rates 50-75bps apart on the exact same deal. Being at the wrong lender is a real dollar cost.

The SBA guarantee fee, explained

The upfront guarantee fee is what the SBA charges the lender for guaranteeing 75%-85% of the loan (the lender then passes the fee through to the borrower, either paid at closing or financed into the loan). It changes every fiscal year (Oct 1 — Sept 30) based on SBA's congressional appropriation.

For fiscal year 2026 (Oct 1, 2025 — Sept 30, 2026), the general schedule is:

Loans $1,000,000 or less: 0% upfront guarantee fee
Loans $1,000,001 – $2,000,000: approximately 1.45% on the guaranteed portion up to $1M, plus 1.7% on the guaranteed portion from $1M-$2M
Loans over $2,000,000: approximately 3.5% on the guaranteed portion up to $1M, plus 3.75% on the guaranteed portion above $1M

These fees are subject to change each fiscal year — always confirm with the current SBA SOP or your lender before finalizing numbers.

Common SBA 7(a) structuring mistakes this calculator can help you avoid

Using the wrong amortization

Most banks that "offer" SBA 7(a) will default-quote you the shortest amortization the SBA allows. If you're buying real estate, you have the right to a 25-year amortization — use it. A $1M loan at 10.5% amortized over 25 years has a monthly payment of about $9,441. Amortized over 15 years, that same loan is $11,053/mo — that's $1,612/mo in cash flow that goes to the bank instead of your business.

Ignoring the fee difference at $1M vs. $1,000,001

Because fees jump from 0% to ~1.45%+ once you cross $1M, borrowing $1,050,000 costs meaningfully more in upfront fees than $999,000. If your deal is close to the threshold, it's worth structuring the equity injection to keep the loan under $1M — if the numbers work.

Financing the guarantee fee vs. paying at closing

SBA lets you finance the guarantee fee into the loan. Convenient at closing, but you're then paying interest on the fee for the full 10-25 year loan life. Paying at closing (if you have the cash) saves real money. Run both scenarios.

Want an actual quote, not an estimate?

The calculator uses standard rate and fee assumptions. Your real quote depends on which lender you're at, your specific credit profile, and how the deal is structured. Fifteen minutes on the phone tells you what a realistic quote actually looks like.

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