Guide

SBA 504 Down Payment: How Much You'll Actually Need at Closing

The headline number is 10% — but the real answer depends on your project, your business profile, and where the money comes from. Here's the complete breakdown.

PrepSBA Editorial Team

August 2026 · 6 min read

The Standard 10% Equity Injection

In a typical SBA 504 project, you fund about 10% of the total project cost as your down payment (the "equity injection"), a bank or credit union provides roughly 50% as a first mortgage, and a Certified Development Company (CDC) backs about 40% with an SBA-guaranteed debenture. For a deeper dive into that structure, see our complete SBA 504 loan guide.

Why 10% matters: conventional commercial mortgages routinely require 20–30% down. On a $2 million building, that's the difference between bringing $200,000 to the table versus $400,000–$600,000 — capital you can keep in the business instead.

When Your Down Payment Drops to 5%

The SBA reduces the required equity injection to 5% or 10% total in two special cases:

5% + 5% structure: If your business qualifies as a small manufacturer, or the project meets certain public-policy goals (e.g., revitalizing a rural or disaster-impacted area, veteran- or minority-owned business), a 10% contribution from a federal, state, or local government program can cover half your injection — you bring only 5%.
5% via a second CDC debenture: In limited cases a second 504 loan can fund part of your injection, keeping your cash contribution near 5%.

When It Rises to 15%

If the project is a special-purpose property — a building designed for one narrow use, like a gas station, car wash, or cold-storage facility — lenders take on more risk, and your required injection climbs to 15%. The same applies to startups (businesses operating under two years), which many CDCs underwrite more conservatively.

Planning the full borrowing journey? Our walkthrough of the SBA 504 loan process shows exactly where the injection gets verified.

What Counts Toward Your Injection

Acceptable sources generally include:

Cash from business or personal accounts (seasoned 60+ days is cleanest)
Home equity or securities-backed lines of credit (disclosed to the CDC)
Land equity — if you already own the lot you're building on, its value can count
Equipment equity in certain structures

What doesn't count: borrowed funds you can't document, credit-card cash advances, or "gifts" that are actually informal loans. CDCs verify the paper trail — unsourced funds are one of the most common closing delays.

Total Cash Needed Beyond the 10%

Budget for more than the injection itself. On top of your down payment, plan for:

Closing costs and third-party fees — appraisal, environmental Phase I, title, legal (often 2–4% of project cost)
Reserves — some lenders want 3–6 months of mortgage payments held back
Working capital for the move or build-out

A realistic planning number: 12–15% of total project cost in liquid funds for a standard purchase with a 10% injection.

Prepare the Documentation Early

Down-payment verification is where underwriters look hardest — and where borrowers scramble. Bank statements, gift letters, land appraisals, and equity-line disclosures all need to line up with your application. Our SBA 504 requirements checklist lists every document CDCs request, and PrepSBA helps you prep your SBA docs so nothing stalls at underwriting.

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Frequently Asked Questions

How much is the down payment on an SBA 504 loan?

The standard down payment is 10% of the total project cost. It drops to 5% for startups, businesses that occupy more than 60% of the property, and certain other CDC-approved scenarios. It rises to 15% for non-owner-occupied property or projects involving speculation or certain specialty uses.

Can the 5% down payment apply to my 504 loan?

Yes, if you qualify under the SBA's reduced-equity criteria: you're a startup (in business less than 2 years), your business occupies more than 60% of the property, or the property is a specialized facility like a gas station, car wash, or hotel. Ask your CDC which criteria apply to your deal.

When does the 504 down payment go up to 15%?

The 15% requirement applies when the business occupies less than 60% of the property, when the project involves speculative construction, or when the borrower is a passive investor rather than a user. Occupancy is the most common driver — stay above 60% and you'll typically stay at 10% or below.

What counts toward the 504 equity injection?

Cash is the standard source, but CDCs also accept equity in the property, owner-occupied business assets, and in some cases third-party gifts or grants from non-relatives. The equity injection must be sourced and documented — you can't borrow it from another lender.

What other cash do I need beyond the 10% down payment?

Beyond the equity injection, budget for closing costs (appraisal, environmental, title, legal, CDC fees — typically 2–4% of the project), and working capital reserves. Some closing costs can be financed into the project, which reduces the cash you need at closing.

Can the 504 down payment be combined with other programs?

Yes — many buyers pair a 504 loan with a 7(a) loan for working capital and improvements, or layer state and local economic development grants on top. The equity injection itself must come from your own sourced funds, but the rest of the stack is flexible.