SBA Loan Calculator
View amortization schedule
| # | Date | Payment | Principal | Interest | Balance |
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SBA Loan Calculator
Use this calculator to estimate your monthly payment, total cost, and amortization schedule for an SBA 7(a) or SBA 504 loan. Results are estimates — actual loan terms depend on your lender, creditworthiness, and loan purpose.
How to Use This Calculator
Enter your loan amount, interest rate, and term to see your estimated monthly payment and total interest cost. Use the SBA 7(a) tab for working capital, equipment, and general business loans; use the SBA 504 tab for large equipment purchases or commercial real estate.
What Is an SBA Loan?
SBA loans are business loans partially guaranteed by the US Small Business Administration. The guarantee reduces risk for lenders, allowing them to approve loans for businesses that might not qualify for conventional financing — at rates lower than most alternative lenders.
SBA 7(a) loan: The most common SBA product. Used for working capital, equipment, real estate, business acquisition, and general business purposes. Variable rates capped by SBA guidelines (currently approximately 10–14% APR depending on loan size). Maximum $5,000,000.
SBA 504 loan: A three-party structure for major fixed assets (equipment over $250,000 and commercial real estate). Features a fixed-rate CDC debenture at below-market rates. The 10% down payment is lower than most conventional commercial real estate or equipment loans. Maximum $5,500,000.
See the full SBA Loans Guide for complete eligibility, documentation, and application guidance.
SBA Loan Rate Reference (May 2026)
SBA sets maximum interest rates for 7(a) loans. Lenders may charge below the maximum.
| Loan Amount | Max Rate |
|---|---|
| $0–$25,000 | Prime + 4.25% (~14%) |
| $25,001–$50,000 | Prime + 3.25% (~13%) |
| $50,001–$250,000 | Prime + 2.25% (~12%) |
| Over $250,000 | Prime + 2.0% (~11.75%) |
Prime rate as of May 2026: approximately 7.5%. SBA 504 debenture rates are fixed and set separately by the CDC debenture market. Confirm current rates with your lender or CDC.
SBA Loan Monthly Payment Examples
| Loan Amount | Rate | Term | Est. Monthly Payment | Total Interest |
|---|---|---|---|---|
| $100,000 | 11% | 10 years | $1,377 | $65,240 |
| $250,000 | 11% | 10 years | $3,442 | $163,040 |
| $500,000 | 10.5% | 10 years | $6,717 | $305,982 |
| $1,000,000 | 10% | 10 years | $13,215 | $585,817 |
| $500,000 | 10.5% | 25 years (real estate) | $4,689 | $906,701 |
Estimates only. Actual rates, fees, and terms depend on lender and loan purpose.
SBA Guarantee Fee Reference
For SBA 7(a) loans, the SBA charges lenders a guarantee fee, which lenders typically pass to borrowers. The fee is based on the guaranteed portion of the loan (75% of loan amount for most 7(a) loans):
| Loan Amount | Guarantee Fee |
|---|---|
| Under $150,000 | 0% |
| $150,001–$700,000 | 3.0% of guaranteed portion |
| $700,001–$1,000,000 | 3.5% of guaranteed portion |
| Over $1,000,000 | 3.75% of guaranteed portion |
Example: $500,000 loan → guaranteed portion = $375,000 → guarantee fee at 3.0% = $11,250.
The guarantee fee adds to the effective cost of SBA financing. Factor it into total cost comparisons with conventional alternatives.
Alternatives to Compare
- Business line of credit: Revolving access to capital at 15–30% APR. No term commitment. See Business Line of Credit Guide.
- Equipment financing: Faster approval (24–48 hours) with rates 5–20% APR for equipment-specific needs. See Best Equipment Financing Companies.
- Merchant cash advance: Fastest access but highest cost (40–200%+ effective APR). Use only when other options are unavailable. Use the MCA True Cost Calculator to compare true cost.
Frequently Asked Questions
What is the current SBA 7(a) interest rate? SBA 7(a) rates are variable and tied to the Prime rate. As of May 2026, the Prime rate is approximately 7.5%, and SBA 7(a) rates are typically Prime + 2.0–4.25% depending on loan amount — approximately 10–14% APR. Rates change when the Prime rate changes. Your lender sets the specific rate within SBA maximums.
Is there a fee for SBA loans? Yes. SBA charges a guarantee fee (paid by the lender, usually passed to borrower) based on the loan amount. Loans under $150,000 have no guarantee fee. Larger loans carry a fee of 3.0–3.75% of the guaranteed portion. This calculator includes a toggle to factor this into total cost.
How long does an SBA loan take to fund? SBA 7(a) loans typically take 2–4 weeks through SBA Preferred Lenders using the Express or SBA One program. Complex loans (over $500K) may take longer. SBA 504 loans take 30–90 days. If you need funding in days rather than weeks, consider conventional equipment financing or a business line of credit.
Can I pay off an SBA loan early? SBA 7(a) loans have prepayment penalties for loans with terms of 15+ years paid off within the first 3 years (5%, 3%, 1% in years 1–3). Loans with terms under 15 years generally have no prepayment penalty. Confirm your specific loan’s prepayment terms with your lender.
What is the SBA loan calculator not capturing? This calculator estimates principal and interest only. It does not include: lender origination fees, closing costs, appraisal fees (for real estate), insurance requirements, or variable rate changes over the loan term. For a complete picture of SBA loan costs, request a Loan Estimate from your SBA lender.