SBA 504 Calculator: Estimate Your Small Business Loan

If you are looking to purchase commercial real estate or heavy equipment for your business, the SBA 504 loan program is one of the most powerful financial tools at your disposal. Use our SBA 504 calculator below to see how the financing is typically structured between the bank, the CDC, and your own contribution.

Bank Loan (50%): $0.00
CDC/SBA Loan (40%): $0.00
Your Down Payment (10%): $0.00
Total Financing (90%): $0.00

Understanding the SBA 504 Loan Structure

The SBA 504 loan program is designed to promote economic development by providing small businesses with long-term, fixed-rate financing for major fixed assets. This usually includes land, buildings, and long-term machinery.

Unlike a traditional bank loan where you might be required to put down 20% to 30%, the SBA 504 program uses a unique "50-40-10" structure:

  • 50% First Mortgage: A private sector lender (usually a bank) provides a loan for 50% of the project cost. They hold the first lien position.
  • 40% Second Mortgage: A Certified Development Company (CDC) provides a loan for 40% of the project cost, backed by a 100% SBA guarantee. This is a fixed-rate loan with a 10, 20, or 25-year term.
  • 10% Equity: The small business owner contributes a minimum of 10% as a down payment. Note: For new businesses or special-purpose properties, this may increase to 15% or 20%.

Why Choose an SBA 504 Loan?

Business owners often prefer the 504 program over the more common SBA 7(a) loan for several reasons:

1. Lower Down Payment

Preserving capital is essential for a growing business. By only requiring 10% down, you keep more cash in your business for operations, hiring, and marketing.

2. Fixed Interest Rates

While the bank's portion (the 50%) may have a variable rate, the SBA/CDC portion (the 40%) is a fixed rate for the life of the loan. This provides predictability in a fluctuating interest rate environment.

3. Longer Repayment Terms

SBA 504 loans offer terms of 10, 20, or 25 years. These longer amortizations lead to lower monthly payments, significantly improving your business's monthly cash flow.

Eligibility Requirements

To qualify for an SBA 504 loan, your business must meet specific criteria:

  • Operate as a for-profit company in the United States.
  • Have a tangible net worth of less than $15 million.
  • Have an average net income of less than $5 million after federal income taxes for the two years prior to application.
  • The project must involve owner-occupied real estate (at least 51% for existing buildings, 60% for new construction).

How to Use This Calculator

To get started, simply enter your total estimated project cost—including the purchase price, renovations, and soft costs. The calculator will automatically show you the standard 50-40-10 split. While interest rates for the bank portion vary by lender, the SBA portion is set monthly based on current Treasury rates. Use our estimated fields to see how your debt service might look.

Keep in mind that there are additional fees associated with SBA 504 loans (usually around 3% of the SBA portion), but these fees are typically financed into the loan, meaning they don't necessarily increase your out-of-pocket down payment.