SBA Loan Down Payments: 7(a), 504 & Acquisition Rules

"How much do I need to put down?" is the first question most SBA borrowers ask — and the honest answer is: it depends on which program you're using and what you're buying. A 7(a) working capital loan for an established business might require nothing down, while a startup buying a special-purpose building through the 504 program could need 20%. This guide separates the scenarios, explains what actually counts as an equity injection, and shows how buyers legitimately reduce the cash they bring to closing.

Down payment vs. equity injection: what SBA lenders actually mean

SBA rules don't use the phrase "down payment." They use Down Payment (Equity Injection) — the borrower's contribution to total project costs, not just the purchase price. That distinction matters. If you're buying a business for $900,000 and the deal also includes $60,000 of working capital and $40,000 of closing costs and fees, your total project is $1,000,000 — and a 10% injection means $100,000, not $90,000.

The governing rulebook is the SBA's SOP 50 10, which the SBA updates periodically. Lenders must meet its minimums, but they're free to require more — and many do, especially on weaker cash flow or industries they consider riskier. That's why two lenders can quote different down payments on the identical deal, and why shopping matters. Through EQ Funding's marketplace, one application reaches multiple SBA lenders who compete — useful when injection requirements vary lender to lender.

SBA 7(a) down payments by scenario

The SBA 7(a) Loan is the flexible workhorse program, and its equity requirements depend entirely on what the loan is for:

Two scenarios deserve a closer look:

Startups. If your business is brand new, expect the 10% minimum — and know that many lenders want more like 15–20% plus post-closing liquidity (cash reserves after the injection). Relevant outside experience, a strong Personal Financial Statement (PFS), and a credible plan all reduce how much cushion a lender demands. See our guide to startup capital for alternatives if the injection is out of reach.

Complete acquisitions. Buying 100% of a business triggers the 10% rule, but current SBA policy gives you a lever: seller financing. We cover that below, and our business acquisition loans guide walks through the full deal structure.

Partner buyouts. Under current SOP rules, a partial change of ownership can require no equity injection if the remaining owner has been active in the business and the business meets the lender's balance-sheet leverage test — typically a pro forma debt-to-worth ratio the SOP specifies. If the deal fails that test, the standard 10% applies. This is one of the most lender-sensitive areas in SBA lending; confirm the specifics with your lender against the current SOP.

SBA 504 down payments: 10%, 15%, or 20%

The SBA 504 Loan finances owner-occupied real estate and heavy equipment through a three-part structure: a bank first mortgage (roughly 50%), a CDC (Certified Development Company) second (up to 40%), and your contribution.

Special-purpose properties are buildings with limited alternative use — hotels, gas stations, car washes, self-storage, bowling alleys, and similar. The SBA maintains the list; if your property is on it, budget the extra 5%.

Even at 15–20%, the 504 usually beats conventional commercial mortgages, which commonly want 20–30% down. If you're weighing property ownership at all, see our commercial real estate financing options and the buy vs. lease analysis.

What counts as an equity injection — and what doesn't

Lenders must verify the source of every injection dollar. Acceptable sources generally include:

• Cash savings — seasoned in your accounts, with 2–3 months of statements showing where it came from. A sudden unexplained $80,000 deposit will get questioned.
• Gifted funds — acceptable with a signed gift letter stating no repayment is expected, plus proof of transfer. Lenders may also verify the giver's ability to make the gift.
• Assets other than cash — equipment or real estate contributed to the project, at appraised value.
• Borrowed funds (limited) — e.g., a HELOC can count only if the lender verifies you can service that debt from income outside the business (a spouse's salary, rental income). Repaying injection debt from the business's own cash flow defeats the purpose.
• Seller notes (acquisitions only, limited) — see below.

Generally not acceptable: unsecured personal loans or credit card advances counted as equity, funds that can't be sourced, and money borrowed against the business being purchased.

Seller notes: cutting your cash-to-close in an acquisition

In a complete change of ownership, current SBA policy typically allows seller financing to count toward up to half of the required 10% equity injection, provided the seller note is on full standby — no principal or interest payments — for at least the first 24 months of the 7(a) loan.

Worked example — $1,200,000 total project (purchase + working capital + fees):

Instead of writing a $120,000 check, the buyer brings $60,000 and the seller carries $60,000 they can't collect on for two years. Sellers often accept this because it gets the deal done at their price — and the standby note typically resumes payments in year three.

One caution: the loan still has to cash-flow. Lenders underwrite to a Debt Service Coverage Ratio (DSCR) — commonly 1.15x–1.25x or better on the business's earnings after the new debt payment, and stronger lenders will model what happens when the standby note starts paying. A seller note reduces your cash at close; it doesn't reduce the total debt the business must eventually service.

Why a calculator estimate isn't an approval

An SBA payment calculator tells you what a given loan amount costs monthly at an assumed rate and term. It does not tell you whether a lender will approve that amount, what injection they'll require above SBA minimums, or how they'll treat your specific injection sources. Real underwriting looks at:

• Verified injection sources — documented, seasoned, and structured correctly (standby agreements signed, gift letters in file).
• Cash flow coverage — historical and projected DSCR after the new payment.
• Post-closing liquidity — many lenders want you to keep meaningful reserves after the injection, not scrape your accounts to zero.
• Credit and character — personal credit, industry experience, and the story behind any blemishes.

Because lender overlays vary so much — one bank wants 15% down and six months of reserves on a deal another funds at the SBA minimum — the smartest move is comparing multiple SBA lenders on the same file. That's exactly what a marketplace like EQ Funding is built for: one application, multiple competing lenders, and side-by-side terms including the injection each actually requires.

Down payment planning checklist

Before you apply, work through this list:

1. Calculate total project costs — purchase price plus working capital, closing costs, and the SBA guaranty fee if financed.
2. Identify your scenario — existing business, startup, complete acquisition, partner buyout, or 504 property — and the corresponding minimum injection.
3. Map your sources — cash, gifts, assets, seller note — and gather documentation for each.
4. Season funds 60–90 days in your accounts with clean statements.
5. Stress-test cash flow — can the business cover the new payment at 1.25x, including the seller note once standby ends?
6. Keep reserves — target 3–6 months of the new payment in post-closing liquidity.
7. Shop lenders — SBA minimums are a floor, not the market. Compare actual injection requirements across lenders.