Draft — pending review. This guide has not completed its editorial review yet; verify details against current SBA rules before relying on it.
How much down payment an SBA loan really needs
Written 2026-07-18 · Draft — pending review
"How much do I need to put down?" is usually the first question and the last one to get a straight answer. Here is the straight answer, with the honest caveat up front: the rules below are the SBA baseline as of this writing, lenders can require more under their own policies, and you should verify the current figures with any lender you talk to.
When a down payment is required at all
Not every SBA loan requires an equity injection. The requirement attaches to specific situations — mainly startups and changes of ownership — and to 504 fixed-asset projects. An existing business borrowing working capital on a 7(a) loan may face no formal injection requirement at all, though the lender's own credit policy still applies, and more cushion never hurts a file.
The 7(a) baseline: 10% for new ventures and ownership changes
For 7(a) loans funding a startup, a business acquisition, a franchise purchase, or another change of ownership, SBA generally requires a minimum borrower equity injection of at least 10% of the total project cost.
Note the phrase total project cost — not loan amount. If you are buying a business for a certain price and adding working capital and closing costs on top, the 10% is measured against the whole project. This is why a realistic project budget matters before anyone talks percentages, and it is also why the number sometimes comes out higher than people expected.
One structural detail: lines of credit are generally excluded from that project-cost injection calculation, though a lender may still want equity under its own policy.
The seller-financing wrinkle
In acquisitions, part of the required injection can sometimes come from the seller instead of your bank account. Under current rules, a seller note can count toward the 10% requirement only if it is on full standby for the life of the loan — meaning the seller agrees in writing to receive no payments on that note until your SBA loan is repaid — and only for up to half of the required injection. In practice that means at least 5% must be your own cash regardless.
Do not build your plan on this without a conversation: the note terms, the standby agreement, and the lender's willingness all have to line up, and the lender must verify every piece.
The 504 ladder: 10%, 15%, sometimes 20%
504 projects use a contribution ladder rather than a flat rule. The base borrower contribution is about 10% of the project. Add roughly 5% if the business is new — generally meaning about two years old or less. Add roughly 5% more if the property is special-purpose: buildings that are hard to convert to other uses, such as hotels, gas stations, car washes, purpose-built restaurants, marinas, or similar. A brand-new business buying a special-purpose property sits at the top of the ladder, around 20%.
The CDC and lender calculate the exact figure for your project type, which is the verify-with-your-lender moment: property classification is a judgment call with real dollar consequences, so ask early how they classify yours.
What counts as your injection
Cash is the clean answer — your savings, documented and traceable. Beyond that, the rules get specific and lender policy gets involved: assets you already contributed to the project, certain borrowed funds if repayment does not depend on the business, standby seller debt within the limits above. Gifts can work with proper documentation of the source.
Whatever the source, expect verification. Lenders trace injection money — where it sat, how long, where it came from. "Mattress cash" with no paper trail is a genuine problem even when the money is genuinely yours. If your down payment is building up somewhere undocumented, move it into an account and let it season while you prepare the rest of the file.
What does not usually count
The value of your own labor ("sweat equity") generally does not count toward a required injection. Neither does money borrowed against the business itself, funds that appear in your account the week before closing with no explanation, or the portion of a seller note that is not on the required standby terms. When in doubt, ask the lender before you count on it.
Planning your number
Work it as arithmetic, not anxiety. Write down the total project — purchase price, equipment, working capital, closing costs, everything. Apply the percentage that matches your situation: 10% for a 7(a) startup or acquisition; the 10–20% ladder for 504. Compare against documented cash you could contribute without leaving the business starved after closing — lenders also look at what is left in reserve, and so should you.
If there is a gap, you have the standard levers: save longer, shrink the project, negotiate standby seller financing, or bring in an investor. If you are close, say so plainly to lenders — some structures and some lenders handle "close" better than others, and asking costs nothing.
And a closing reality check: every figure here is the SBA floor as of this writing, not a promise. Lender policy can require more, rules change through SBA notices, and the only number that finally matters is the one in your closing documents. Verify against current SBA rules and with your lender before making decisions.