You found a pest control company listed at $2.2 million. You have run the salary replacement math, confirmed the quality of earnings, and sent your letter of intent. The seller accepted. Your lender pre-qualified you. Now the lender asks one question that stops many first-time buyers cold: where is your equity injection coming from, and can you prove it?
The equity injection is the down payment on an SBA deal. The SBA requires it because they are guaranteeing up to 75% of a loan that finances up to 90% of the purchase. They want the buyer to have real money at risk. Not a promise. Not a plan to save. Verified cash or cash-equivalent already in hand.
What the 10% actually means
The SBA minimum equity injection is 10% of total project costs. That figure is not the purchase price. It includes every cost financed through the loan.
Some lenders require 15% for first-time buyers or deals with thin debt service coverage. Ask your lender early what their internal threshold is, not just the SBA minimum.
Many buyers budget for 10% of the purchase price and discover they are $15,000 to $25,000 short once closing costs and working capital are factored in. Calculate total project costs with your lender before you commit to a deal structure.
Six sources the SBA accepts
Not every dollar is equal in the eyes of an SBA underwriter. The source determines whether the money counts toward your injection, and how much documentation you need to prove it.
1. Cash savings
The simplest source. Personal savings in a checking or savings account. The lender needs bank statements showing the funds have been in your account, with a clear deposit history. Large deposits in the 60 days before application will be questioned. If $30,000 appeared in your account last month, you need documentation showing where it came from: a bonus, a tax refund, or a transfer from another account you also own.
Under SOP 50 10 8, which took effect in June 2025, the SBA tightened source verification across all loan sizes. The prior practice of reduced documentation for smaller loans is gone. Every dollar in the injection needs a paper trail, regardless of the loan amount.
2. Liquidated securities
Stocks, bonds, mutual funds, or ETFs sold and transferred to your bank account. The documentation chain: brokerage statement showing the sale, bank statement showing the deposit, and a match between the two amounts. Capital gains taxes from the liquidation are your problem, not the lender's, but make sure you account for the tax hit when calculating how much you net.
3. ROBS (Rollover for Business Startups)
ROBS allows you to use retirement funds to buy equity in your acquisition company without paying early withdrawal penalties or income taxes on the rollover. The mechanics: you form a C corporation, create a new 401(k) plan for that corporation, roll your existing 401(k) or IRA into the new plan, and the plan purchases stock in your C corp. The corporation then uses those funds as the equity injection.
ROBS is legal. The IRS has reviewed the structure and does not consider it an abusive tax shelter. But the setup is not something you do yourself. You need a specialized ROBS provider. Setup costs typically run $3,500 to $5,000, with ongoing compliance fees of $100 to $200 per month. The C corp structure adds tax complexity that persists for the life of the business.
ROBS moves money out of creditor-protected retirement accounts into exposed business equity. If the business fails, those retirement funds are gone. A traditional 401(k) is shielded from creditors in bankruptcy. Business equity is not. Factor this into your personal guarantee risk calculation.
Start the ROBS process early. It typically takes 3 to 4 weeks to set up the C corp, establish the plan, and complete the rollover. That timeline runs in parallel with your SBA loan process, but the lender cannot count your injection until the rollover is complete and the funds are in the corporate account.
4. Gift funds
The SBA accepts monetary gifts as equity injection. The requirements: a signed gift letter from the donor confirming the funds are a gift with no repayment obligation, the donor's bank statements showing the source of the funds, and your bank statements showing receipt. The gift letter is not a formality. It is a legal document the lender files with the loan package. If the IRS later determines the gift was actually a loan, it creates problems for both parties.
There are no SBA restrictions on who can give the gift, but the funds cannot come from anyone with a financial interest in the deal (the seller, the broker, or an investor expecting equity in the business).
5. Seller note on full standby
A seller can finance part of your equity injection through a promissory note, but the conditions are strict. The note must be on full standby for the entire life of the SBA loan. That means zero payments of principal or interest until the SBA loan is fully repaid. Interest may accrue and be added to the principal balance. The note must be subordinated to the SBA loan, and its maturity must be at least as long as the SBA loan term (usually 10 years).
A standby seller note can count for up to 50% of the required equity injection, or 5% of total project costs, whichever is less.
The standby note reduces how much cash you need, but it does not eliminate the cash requirement. You still need to bring verified funds for at least half of the injection.
Do not confuse a standby seller note with a regular seller note. A regular seller note (one with monthly payments starting after closing) does not count toward the equity injection. It reduces the SBA loan amount and its payments are included in the debt service coverage ratio calculation. Both types of seller notes are common in SBA deals. They serve different purposes.
6. Personal loans with outside repayment
You can borrow money for the injection, but only if the repayment comes from a source outside the business. A home equity line of credit repaid from your spouse's salary is acceptable. A personal loan repaid from business cash flow is not. The lender will ask for the loan agreement and documentation of the repayment source. If your personal loan payments come out of the same household income that you plan to draw as owner salary, expect pushback.
How experienced buyers structure the injection
Most first-time buyers who close SBA deals use a combination of sources. Pure cash from savings is the cleanest path, but it is not always realistic when you need $200,000 or more in liquid funds while maintaining a personal financial cushion.
A common structure on a deal in the $1.5M to $3M range: 60% of the injection from personal savings and liquidated brokerage accounts, 30% from a standby seller note, and the remaining 10% from either a gift or a ROBS rollover. This keeps the cash outlay manageable while satisfying the SBA requirements.
The key constraint is that every source needs time. Securities take 3 to 5 business days to settle after liquidation. ROBS takes 3 to 4 weeks. Gift documentation requires coordination with the donor's bank. Standby seller notes require legal drafting that both parties and the lender must approve. None of these happen overnight.
Map out your equity injection sources before you sign the LOI. If your plan depends on ROBS or a standby seller note, you need those conversations started during the pre-qualification stage, not after you get the conditional commitment.
What the lender is actually checking
Underwriters are not trying to make the process difficult. They are following SBA rules that exist to prevent fraud and ensure loan quality across a $31 billion annual lending program. The verification has three layers.
Source. Where did the money originate? The lender needs to trace each dollar to an acceptable source. A $50,000 deposit with no explanation is not verified equity. It is a question mark that delays your timeline by a week while you produce documentation.
Seasoning. Has the money been in your possession long enough to be credible? Funds that appeared in your account the week before the loan application raise flags. The standard expectation is 60 to 90 days of bank statements showing a stable balance or a clear, documented deposit chain.
Availability. Are the funds liquid and accessible at closing? A vesting schedule on RSUs, a pending home sale, or a ROBS rollover that has not completed yet do not count until the cash is actually in the account. The lender will re-verify your balances before final approval.
Mistakes that cost buyers time
Mixing personal accounts. Moving money between personal accounts without a paper trail creates confusion for the underwriter. If you transfer $80,000 from your brokerage to your checking, the lender sees a large deposit in checking and asks for the source. If your brokerage statement from the same month shows the withdrawal, the trail is clean. If the transfer happened two months ago and you did not keep the statement, you are now requesting historical documents from your brokerage while your closing clock ticks.
Assuming home equity counts. Equity in your home is not an acceptable SBA equity injection source unless you take a home equity loan and the repayment comes from a non-business source. Simply having a $400,000 home with a $200,000 mortgage does not give you $200,000 in equity injection. You have to actually borrow against it and deposit the cash.
Starting ROBS too late. ROBS setup is a 3 to 4 week process that involves forming a C corporation, establishing a 401(k) plan, and completing the rollover. Buyers who start this process after the LOI is signed are already behind. The lender cannot count the funds until the rollover is complete and the money is sitting in the corporate account.
Ignoring the tax impact of liquidating investments. Selling $150,000 in stock to fund your injection may trigger $20,000 to $40,000 in capital gains taxes. That tax bill comes due in April, potentially during your first year of business ownership. Account for it in your personal cash flow projections. You do not want your first quarterly estimated tax payment to create a personal cash crisis six months after closing.
Not discussing the standby note early. Sellers agree to standby notes during LOI negotiation, not at the closing table. If you need a standby seller note to reach the 10% threshold, that term needs to be in the LOI. Adding it later changes the deal economics for the seller and risks reopening a negotiation you already closed.
The bottom line
The equity injection is not the hardest part of an SBA acquisition, but it is the part most likely to surprise a first-time buyer who did not plan for it. The amount is straightforward: 10% of total project costs, not purchase price. The sources are limited but flexible. The documentation requirements are exact.
Know your number before you start looking at deals. Map your sources before you sign an LOI. Start the documentation early. The buyers who stumble on the equity injection are not the ones who lack the funds. They are the ones who lack the paperwork.