$500K SBA Loan: Monthly Payment and Costs
At 9.75%, a $500,000 SBA 7(a) loan is about $6,539 a month over 10 years, the usual term for buying a business, or $4,456 a month over 25 years with real estate.
Monthly payment on $500,000
The estimate uses Prime (7.00%, as of September 17, 2026) plus 2.75%, which is where most SBA acquisition loans price. The SBA ceiling for a loan this size is Prime plus 3.00%, or 10.00% today (the maximum rate rules).
| Term | At 9.75% | At the 10.00% cap |
|---|---|---|
| 10 years | $6,539 | $6,608 |
| 25 years | $4,456 | $4,544 |
Ten years applies to a business purchase, working capital and most equipment; 25 years to real estate. A loan that mixes the two gets a blended term (SBA loan terms).
Upfront costs
| Cost | Amount |
|---|---|
| SBA guaranty fee (FY2027 standard) | $11,250 |
| Other closing costs (estimate) | $29,462 |
| Total | $40,712 |
Both are usually financed into the loan. The fee is set by SBA and applies to the guaranteed portion (how the guaranty fee works; some businesses pay no upfront fee in FY2027, see the FY2027 fee waiver). The closing-cost figure is an estimate, not a quote, and real estate adds appraisal, environmental and title costs.
The cash flow a lender looks for
On the 10-year schedule the payments add up to $78,462 a year. Lenders commonly look for the business to earn at least 1.25 times its debt payments after the owner is paid, which here is about $98,078 a year of cash flow available for debt service.
If the loan buys a business, the SBA minimum down payment is 10% of the total project. A $500,000 loan at 90% of the project means a project of about $555,556 and $55,556 from you (the down payment rules).
Where the balance goes, year by year
| 10-year loan | Principal paid | Interest paid | Balance left |
|---|---|---|---|
| Year 1 | $31,077 | $47,386 | $468,923 |
| Year 2 | $34,246 | $44,217 | $434,678 |
| Year 3 | $37,738 | $40,724 | $396,940 |
| Year 4 | $41,586 | $36,876 | $355,354 |
| Year 5 | $45,827 | $32,635 | $309,526 |
| Year 6 | $50,500 | $27,962 | $259,026 |
| Year 7 | $55,650 | $22,812 | $203,376 |
| Year 8 | $61,325 | $17,137 | $142,050 |
| Year 9 | $67,579 | $10,883 | $74,471 |
| Year 10 | $74,471 | $3,991 | $0 |
Assumes the rate holds. Most SBA loans are variable and can adjust with Prime.
Questions
What is the monthly payment on a $500K SBA loan?
About $6,539 a month over 10 years at 9.75% (Prime 7.00% plus 2.75%), or $4,456 over 25 years. At the SBA maximum of 10.00% for this loan size, it is $6,608 over 10 years.
What does a $500K SBA loan cost upfront?
The FY2027 standard SBA guaranty fee is $11,250, and other closing costs are roughly $29,462 as an estimate. Both are usually financed into the loan.
How much income do I need for a $500K SBA loan?
The 10-year payments total about $78,462 a year. Lenders commonly look for 1.25 times that in cash flow available for debt service, about $98,078 a year.
Estimates for planning, not a loan offer. Rates use Prime of 7.00% as of September 17, 2026. Your lender sets your actual rate, fees and terms.
Straight from the SBA's rulebook
The SBA rules behind these numbers
- Can a broker or consultant charge a fee on an SBA loan?
- How much is the SBA guaranty fee?
- Is the SBA guaranty fee waived in 2027?
- What are the fees on an SBA 504 loan?
- What fees can a lender charge on an SBA loan?
- Who pays the SBA annual service fee?
- Can an SBA loan be assumed by a buyer?
- Can an SBA loan be increased after approval?