
If you are weighing an SBA 504 loan to buy a building or finance heavy equipment, the first question is almost always the same: how much do I actually have to put down? The short answer is that most borrowers contribute 10 percent of total project costs, which is far less than the 20 to 30 percent many banks ask for on a conventional commercial loan.
The longer answer is where it gets interesting, because the SBA 504 loan down payment can rise to 15 or even 20 percent depending on your business and the property you are buying.
Below, we break down what you really need, when the number goes up, and how to plan for it so there are no surprises at closing.

The standard SBA 504 loan down payment is 10 percent of total project costs. For an established for-profit business buying a general-use commercial property, you contribute 10 percent, a bank or credit union finances 50 percent, and a Certified Development Company finances the remaining 40 percent through an SBA-guaranteed debenture. The down payment increases to 15 percent for newer businesses or special-purpose properties, and to 20 percent when both factors are present.
This low contribution is one of the main reasons owners choose the 504 program. On a conventional commercial mortgage, lenders commonly want 20 to 30 percent down. The 504 structure lets you keep more cash in the business for payroll, inventory, and growth.
The 504 program uses a three-party structure. Understanding it makes the down payment easier to see in context.
Two factors can push your required contribution higher. They are worth checking early, because they change how much cash you need to set aside.
If your business has been operating for less than two years, the SBA generally treats it as a startup and asks for an additional 5 percent. That brings the contribution to 15 percent. Newer businesses carry more risk, and the larger equity stake helps offset it.
A special-purpose property is built for one specific use and is harder to repurpose or resell. Think hotels, gas stations, car washes, bowling alleys, and self-storage facilities. Because the collateral is less flexible, these projects require an extra 5 percent, also bringing the contribution to 15 percent.
When a startup buys a special-purpose property, both add-ons apply. The down payment rises to 20 percent. It is still competitive against conventional financing, but you will want to plan for the higher figure from the start.
Your down payment is calculated on total project costs, not just the purchase price.
That total can include several eligible items:
Because fees are typically rolled into the financing rather than paid out of pocket, your real upfront cash need centers on the equity injection itself plus a few borrower-paid closing items.
The equity injection does not have to be a single lump sum of cash sitting in a checking account.
Acceptable sources include:
For smaller projects in underserved communities, FBDC also offers a Down Payment Assistance Program that can provide a portion of the required contribution. It is worth asking about early if cash on hand is your main constraint.
Use these steps to estimate what you will need before you apply.
Say an established manufacturing company is buying a $750,000 warehouse, a general-use property. At the standard 10 percent, the equity injection is $75,000. A bank finances $375,000 and the CDC finances $300,000 through the SBA debenture. If that same company were less than two years old, the contribution would rise to $112,500, or 15 percent.
Run your own numbers before you sit down with a lender. It turns an abstract percentage into a concrete savings target.
Putting less down does more than ease the purchase. It shapes how your business operates afterward.
For most established businesses buying general-use commercial property, the SBA 504 loan down payment is 10 percent of total project costs. Plan for 15 percent if you are a newer business or buying a special-purpose property, and 20 percent if both apply. Either way, you are typically putting down far less than a conventional commercial loan would require, while locking in a long-term fixed rate.
The smartest next step is to confirm your numbers with someone who structures these deals every day. FBDC has helped fund more than $14 billion in projects over 35-plus years, and a Business Development Officer can tell you exactly what your project will require. Reach FBDC at (813) 348-0660 or info@fbdc.net to talk through your options.
The minimum down payment is usually 10 percent of total project costs for an established for-profit business buying general-use property. It rises to 15 percent for startups or special-purpose properties and 20 percent when both apply.
The 504 program splits financing across three parties, with a bank covering 50 percent and a CDC covering 40 percent through an SBA-guaranteed debenture. That structure reduces lender risk, so borrowers can contribute as little as 10 percent instead of the 20 to 30 percent many conventional commercial loans require.
Yes. The equity injection can come from cash, gifted funds you do not repay, or equity in property used in the project. Borrowed funds may be allowed if the business can support all of its debt, though the note may need to be placed on standby.
A special-purpose property is designed for one specific use and is harder to convert or resell, such as a hotel, gas station, car wash, or self-storage facility. These projects require an extra 5 percent down because the collateral is less flexible.
Most SBA and closing fees are financed into the loan rather than paid as part of your down payment. Some borrower-paid items, such as certain attorney or title fees, may be due at closing, so confirm the details with your lender.