Deals die at the closing table over this more than borrowers expect. A buyer lines up a business acquisition, the lender approves the credit, and then — two weeks before close — the equity injection gets kicked back because the source doesn't meet SBA guidelines. The 10% down rule sounds simple. The execution is where things get complicated.
This post covers every eligible source of equity injection under current SBA policy, plus four sources that used to fly but don't anymore.
What exactly is the SBA equity injection requirement?
For most 7(a) and 504 loans, the SBA requires the borrower to inject a minimum of 10% of the total project cost as equity. For business acquisitions, that floor rises to 10% of the purchase price (which often includes goodwill, inventory, and working capital — not just tangible assets). For loans where the SBA deems the transaction "higher risk," lenders are permitted — and often expected — to require more.
The equity injection rule exists because the SBA guarantee is not a substitute for skin in the game. A borrower who has contributed real, verified capital to a project has a financial incentive to protect that investment. From an underwriting standpoint, it also reduces the loan-to-value exposure on day one.
The key governing document is SOP 50 10 8, which lenders and brokers should be reading directly, because the SBA updates it periodically and the details matter.
Where can the 10% equity injection come from?
The SBA evaluates equity injection on two dimensions: source (where the money originated) and verification (can you document it?). Both have to be clean.
Here are the sources SBA lenders will accept:
Personal cash and savings The most straightforward source. Funds held in a checking, savings, money market, or brokerage account in the borrower's name are eligible. Lenders will typically require 60–90 days of statements to confirm the funds were not recently deposited in a lump sum without explanation. An unexplained $200,000 deposit three weeks before closing will trigger a sourcing inquiry every time.
Gift funds (with conditions) Gifts from a family member are eligible, but the lender needs a signed gift letter confirming no repayment is expected and that the donor has no ownership interest in the business being acquired. The gift must be documented with a bank statement showing the transfer. If the "gift" comes with a wink and a side agreement to pay it back, it's a loan — and that changes the debt-service calculation entirely.
Proceeds from the sale of another asset A borrower who sells a car, a piece of real estate, a securities portfolio, or another business can use those proceeds as equity injection. The lender needs to trace the funds: closing disclosure for real estate, a brokerage trade confirmation for securities, a bill of sale for personal property. The paper trail has to connect the asset sale to the funds being injected.
Retirement account funds (ROBS structure) A Rollover for Business Startups — commonly called ROBS — allows a borrower to roll qualified retirement funds (401k, IRA, etc.) into the business through a C-corporation structure without triggering early withdrawal penalties. When properly structured, ROBS proceeds are an eligible equity source. The key word is properly structured — the IRS scrutinizes these arrangements, and a sloppy ROBS can create serious tax exposure. Consult your attorney and CPA before going this route, not after.
Seller note (partial equity credit — with restrictions) This one surprises borrowers. A seller who agrees to carry a note on part of the purchase price can have a portion of that note credited toward the equity injection — but only if the seller note is on full standby for the life of the SBA loan. Full standby means no payments of principal or interest until the SBA loan is paid off. Some sellers will accept that; many won't. When it works, it's a powerful tool. When the seller wants monthly payments, it doesn't count.
Cash out of a refinanced asset (equity from real estate or equipment) If a borrower has equity in real estate or business equipment and refinances that asset to generate cash, those proceeds can be used as equity injection. The lender will want to confirm the refinance actually closed and that the funds were transferred, not just that the equity theoretically exists on a balance sheet.
Home equity line or second mortgage A HELOC or second mortgage on the borrower's personal residence is an eligible source of injection — but there's a catch the SBA is explicit about. Because this creates a new debt obligation, the lender must include that debt service in the personal cash flow analysis. If the added HELOC payment pushes the borrower's global debt-service coverage below acceptable levels, it can undermine the same loan it's supposed to support.
What are the 4 injection sources that no longer qualify?
SBA policy has tightened over time, and several sources that were once used — sometimes routinely — no longer meet guidelines under SOP 50 10 8.
1. Borrowed funds without disclosure In the past, some borrowers took out a personal loan or credit card advance, deposited the money, and presented it as savings. Current SBA policy is explicit: borrowed funds used as equity injection must be disclosed, and if they create a repayment obligation, that obligation enters the debt-service calculation. Undisclosed borrowed funds that surface during underwriting — and they usually do — are a fast path to a declined loan and a potential fraud referral.
2. Unsecured personal loans from a third party A friend or business associate cutting a check with an informal repayment agreement on the side used to get papered over. Today, if there is any repayment obligation attached to the funds, it's a loan, and the lender has to treat it as debt. Lenders are also required under current SOP to verify the source of any large third-party transfers. This one is gone.
3. Cash advances against the business being acquired Drawing a line of credit or cash advance against the target business's assets — essentially using the thing you're buying to fund the purchase — is not eligible as equity injection. The SBA views this as circular financing. The equity has to come from outside the transaction.
4. Overcapitalization through inflated asset values This was more common in the pre-2008 era: a buyer and seller would informally agree to inflate the purchase price, which on paper created the appearance of equity when the loan funded. Lenders are now required to independently validate business valuations (typically via a third-party appraisal for transactions above SBA thresholds), and the SBA audits loan files post-closing. Inflated valuations that surface later create guarantee repair issues for lenders and potential fraud exposure for everyone involved.
How do lenders actually verify equity injection?
Verification is not just a formality. Most SBA lenders will require:
- Bank statements covering 60–90 days prior to closing
- A paper trail connecting every large deposit to a documented source
- A signed equity injection certification from the borrower at closing
- For non-cash sources (asset sales, retirement rollovers, gift funds): the underlying transaction documents
The most common miss I see is borrowers who legitimately have the funds but can't document where they came from. Cash that was sitting in a mattress, informal transfers between family accounts with no memo lines, cryptocurrency converted to cash with no exchange records — all of these create sourcing problems even when the money is real and the intent is honest. Start pulling that documentation together the moment you're in due diligence, not the week before closing.
Does the 10% have to be injected before the loan funds?
Yes. The equity injection must be in place at or before closing — it cannot be a promise to inject funds later. The lender and SBA will want to see either a wire confirmation or a cashier's check at the closing table, or documented evidence that the funds are already in the business (for example, in a change of ownership where the buyer has been pre-positioning capital). Post-closing equity injection commitments are not acceptable under SBA guidelines.
What if a borrower genuinely needs more than 90% financing?
The honest answer: most SBA lenders will not go below 10% injection, and many want more on acquisitions with heavy goodwill or limited collateral. The workarounds — seller notes on full standby, ROBS structures, asset refinances — can supplement a thin equity position, but they all have costs and conditions attached.
If a borrower cannot document a clean 10% injection from an eligible source, the right move is to address it now, not hope the lender won't look closely. They will look closely. That's their job.