SBA equity injection rules: what counts, and what doesn’t

The equity injection is where good acquisitions stall. The amount is only half the question; the other half is what the SBA lets you count, and how your lender proves it is real.

Short answer. A 10% minimum injection applies to acquisitions and startups, measured against total project cost. It can be cash, a documented gift, or — for acquisitions — up to half via a seller note on full standby. Borrowed money that requires repayment does not count. Lenders verify the source with statements and a paper trail.

How much, and against what

The rule under SOP 50 10 8 is a minimum 10% of total project cost for a change of ownership or a startup. Total project cost is not just the price — it includes working capital, inventory, closing costs and fees financed in the loan. A bigger financed package means a bigger injection.

What counts

Cash from personal funds, seasoned and traceable.
Gifts from family, with a signed gift letter and proof of transfer.
Standby seller debt — up to 50% of the required injection, on full standby for 24 months.
Assets injected into the business, at a supportable value.

What does not count

Borrowed funds that require repayment on a normal schedule, a home-equity line you are actively drawing and paying, or “sweat equity” and projected earnings. The whole purpose is capital genuinely at risk, so anything you can walk away from without loss is excluded.

How lenders verify it

Expect to document the source and seasoning — typically two months of bank statements, and for gifts a letter plus the transfer record. If the injection appears only days before closing from an unexplained source, underwriting will ask where it came from. Clean sourcing up front is the single biggest time-saver in an acquisition file.

Equity injection calculator

See the minimum injection for your project cost, and how much a standby seller note can offset.

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Injections in context

our data

Because the median 7(a) loan is $178,850 and the median funded rate sits near 10%, the injection is usually a five-figure sum on a deal that will carry a real monthly payment — which is exactly why the SBA wants it to be genuine capital. Model both together with the calculators below.

Common questions

What can I use for an SBA equity injection?

Seasoned personal cash, a documented family gift, business assets at a supportable value, and — on acquisitions — up to half via a seller note on full standby. Repayable borrowed money does not count.

How does a lender verify my injection?

Usually two months of bank statements showing the funds seasoned, plus a paper trail for any gift or transfer. Unexplained last-minute deposits get questioned.

Can I use a 401(k) for the injection?

Yes — either a taxable withdrawal or a ROBS rollover that capitalizes the business. Both are allowed; weigh the tax and retirement trade-offs first.

Keep going

Equity injection calculator Glossary: equity injection Glossary: full standby Glossary: seller note Guide: down payment Guide: seller financing Guide: buying a business

Rules described here follow SBA SOP 50 10 8 (effective June 1, 2025) and can change; lenders add their own overlays. This is education, not advice — confirm specifics with your lender. Figures cited as “our data” come from the SBA 7(a) & 504 FOIA record, released 2026-06-30.