SBA Equity Injection Explained: 5% Cash + 5% Seller Note Structure

Reviewed by the Regalis Capital acquisitions team. Last updated June 2026.

What Is an SBA Equity Injection and Why Does It Matter?

The SBA does not call it a down payment. That distinction is not semantic. It matters because equity injection has specific rules about what qualifies, what does not, and how it can be structured. Getting this wrong is one of the most common reasons deals fall apart at the lender stage.

Every SBA 7(a) acquisition loan requires the borrower to inject at least 10% equity, measured against the total project cost (purchase price plus closing costs, working capital, and any other completion costs), not just the purchase price (SBA SOP 50 10 8, effective June 1, 2025). Of that 10%, at least 5% of the total project cost has to be genuine non-borrowed cash. The purpose is to ensure the buyer has skin in the game and that the business is not being acquired with 100% borrowed money.

The critical word is "injection." The SBA cares that real economic value is going into the deal from a source that is not a loan. Cash qualifies. A seller note on full standby qualifies. Borrowed money from anywhere does not.

What Counts as SBA Equity Injection?

Not all sources of funds are treated equally. The SBA draws a hard line between equity and debt. Here is what qualifies.

Cash from the buyer. Personal savings, checking, money market, or any liquid asset the buyer owns free and clear. The lender will verify the source with 60 to 90 days of bank statements. The cash must be seasoned, meaning it cannot arrive as a large unexplained deposit right before closing.

Seller note on full standby. This is the most deal-friendly component of the structure. A portion of the seller's proceeds gets deferred, structured as a promissory note at 0% interest with no payments during the entire SBA loan term (typically 10 years). Because the seller is leaving money in the deal without expecting repayment during the loan period, the SBA treats this as equity-equivalent. A full-standby seller note can supply at most half of the required injection: up to 5% of the total project cost, or 50% of a 10% requirement. The other half, at least 5% of total project cost, still has to be genuine non-borrowed cash. A note that is not on full standby counts as zero equity. Regalis Capital achieves full standby terms on the vast majority of transactions.

Retirement funds via ROBS. A Rollover for Business Startups (ROBS) allows a buyer to roll funds from a 401(k) or IRA into a C-corporation that then invests in the acquisition. Done correctly, this is not a distribution or a loan, so it does not trigger early withdrawal penalties. It counts as equity. ROBS is complex and requires a specialist to set up properly. Costs typically run $5,000 to $10,000 in setup fees, with ongoing administration around $1,500 to $2,500 per year.

Gifted funds with documentation. A family member or third party can gift funds for the equity injection. The gift must be documented with a letter confirming no repayment is expected. The lender will scrutinize gifted funds carefully. The gift giver may also need to provide their own bank statements showing the source of the gift.

Equity from a sold asset. Proceeds from selling real estate, stocks, or other assets can fund the equity injection, as long as the source is documented and verifiable.

The table below sorts the common funding sources into what the SBA accepts as equity, what it accepts only with conditions, and what it rejects.

Acceptable equity injection sources and their conditions (source: SBA SOP 50 10 8, effective June 1, 2025; the 401(k)-at-a-discount line is lender credit practice, not an SBA SOP rule).

What Does NOT Count as Equity Injection?

This is where buyers get into trouble.

Borrowed money without an outside repayment source. Borrowed funds, including personal loans and home equity lines of credit (HELOCs), now count toward the injection only if you document an outside repayment source that is separate from the business (SBA SOP 50 10 8, effective June 1, 2025). The business's own cash flow can no longer be used to repay injection borrowing. A HELOC or personal loan you intend to pay back out of the acquired business is still a disqualifier, as are loans from friends or family with repayment expectations.

Credit card advances. Cash advances on credit cards are debt, not equity. Lenders see this and it kills deals.

Unsecured personal loans. Same logic as above. If there is a repayment obligation, it is not equity.

Seller notes NOT on full standby. A seller note that requires payments during the SBA loan term does not count as equity. The note must be on full standby, meaning zero payments for the duration of the SBA loan, to qualify. This is a common misunderstanding. A seller carrying back 10% with monthly payments is not an equity injection structure.

Investor money with equity or repayment expectations. If a third party is contributing funds in exchange for an ownership stake or repayment, the SBA will treat this as a co-borrower situation and potentially require that party to guarantee the loan as well. This complicates deals significantly.

How the 5% Cash + 5% Seller Note Structure Works in Practice

The standard Regalis Capital deal structure for SBA acquisitions works as follows.

In the clean minimum-injection version, the buyer brings 5% of total project cost in cash to closing. The seller agrees to defer 5% of their proceeds as a promissory note with no interest and no payments for the duration of the SBA loan term (10 years). The SBA 7(a) loan funds 85%, the buyer cash is 5%, the full-standby seller note is 5%, and a closing-costs-and-working-capital slice is the final 5%, so the four layers add up to exactly 100% of total project cost. When the seller carries a larger note (15% in the worked $750K and $1.5M scenarios below), the SBA loan share drops to 80% and the extra 10% beyond the standby portion is subordinate debt at market rate, with payments, not equity.

The seller is not giving away money. In the clean 5% standby structure they receive about 95% at closing and defer only the 5% standby portion, paid out at the end of the SBA loan term or upon a sale of the business, whichever comes first. When they carry a larger 15% note they receive about 85% at close and defer the rest.

From the seller's perspective, accepting a standby note is often preferable to a deal falling apart. Regalis Capital's team works with sellers to frame this accurately: they are deferring a small portion of their proceeds, not forfeiting them.

From the buyer's perspective, this structure minimizes cash out of pocket at closing. Rather than needing 10% cash, the buyer only needs 5%.

Deal Math: Three Acquisition Scenarios

The following tables show exact equity injection requirements across three deal sizes. These are estimates based on current market data as of Q1 2026. Actual terms depend on individual qualification and lender.

Scenario 1: $300K Acquisition (minimum-injection structure)

This is the clean 5% cash plus 5% full-standby note structure. The four financing layers sum to 100% of total project cost:

The 5% buyer cash plus the 5% full-standby seller note together make up the 10% equity injection. At $300K, the buyer needs $15,000 in cash. That is a realistic number for many first-time buyers. The implied multiple above is an SDE multiple, which is not comparable to an EBITDA multiple (SDE includes owner pay, so it runs lower).

Scenario 2: $750K Acquisition (larger seller-carry structure)

Here the seller carries 15% total, of which only 5% is on full standby and counts as the equity-injection portion; the other 10% is subordinate debt that does NOT count as equity and carries its own payments. The financing layers (SBA loan, buyer cash, seller note) sum to 100% of total project cost; closing costs and working capital are funded inside the buyer cash and seller-carry layers rather than shown on a separate line:

At $750K, the buyer needs $37,500 in cash. Of the 15% seller note, only the 5% on full standby ($37,500) counts toward the equity injection alongside the buyer cash; the remaining 10% ($75,000) is subordinate debt at market rate that amortizes with payments. Because that subordinate note has payments, its annual debt service ($18,250) goes into the DSCR denominator alongside the SBA loan payment. Total annual debt service is about $116,650, so the DSCR is $210,000 divided by $116,650, about 1.8x, not the 2.1x you would get by looking at the SBA loan alone. With this larger carry the seller defers 15% and receives about 85% at close. These are rough estimates based on Q1 2026 market data.

Scenario 3: $1.5M Acquisition (larger seller-carry structure)

Same larger-carry pattern as Scenario 2: the seller carries 15%, of which 5% on full standby counts as equity and 10% is subordinate debt with payments. The financing layers (SBA loan, buyer cash, seller note) sum to 100% of total project cost; closing costs and working capital are funded inside the buyer cash and seller-carry layers rather than shown on a separate line:

At $1.5M, the buyer needs $75,000 in cash. Of the 15% seller note, only the 5% on full standby ($75,000) counts toward the equity injection; the remaining 10% ($150,000) is subordinate debt at market rate that amortizes with payments. That subordinate note adds about $36,500 of annual debt service, so total annual debt service is about $233,300 and the DSCR is $400,000 divided by $233,300, about 1.7x, not the 2.0x the SBA loan alone would suggest. The seller defers 15% and receives about 85% at close. That cash figure is manageable for a business generating $400K in annual cash flow, particularly when paired with ROBS or retirement funds for buyers who are cash-constrained. These are rough estimates based on Q1 2026 market data. Actual terms depend on individual qualification and lender.

Note on SDE: the cash flow figures above represent discounted SDE. SDE (Seller's Discretionary Earnings) is a broker-reported figure that typically requires a 15% to 50% discount to approximate what a buyer will actually take home after replacing the owner's labor.

What If You Do Not Have the 5% Cash?

This is a real situation. Not every qualified buyer has $37,500 or $75,000 sitting in a checking account. Here are the legitimate options.

ROBS (Rollover for Business Startups). If you have retirement savings in a 401(k), 403(b), or IRA, ROBS allows you to access those funds without a taxable distribution or early withdrawal penalty. The structure involves creating a C-corporation that sponsors a new qualified retirement plan, rolling the old retirement funds into the new plan, and then having the new plan purchase stock in the C-corp, which uses the proceeds for the acquisition. This is legal and IRS-recognized. It is also complex. Expect $5,000 to $10,000 in setup costs and annual administration fees. The key benefit: funds deployed via ROBS count as equity.

Increase the seller note. A seller carrying a larger note on full standby can reduce the cash needed for the rest of the capital stack, but it cannot replace the mandatory 5% genuine-cash floor. Under SBA SOP 50 10 8 the full-standby note still counts as equity only up to 5% of total project cost (half of the injection), so at least 5% must always be genuine non-borrowed buyer cash. The only path that waives the buyer's injection entirely is a qualifying same-NAICS expansion (an existing business buying another in the same six-digit NAICS code with identical ownership and both entities as co-borrowers), and even then a lender may still require cash if it judges it prudent.

Negotiate a lower purchase price. A lower price reduces the absolute dollar amount of the equity injection. If a deal is priced at $750K but the business is worth $650K, closing that gap also reduces your cash requirement by $5,000 (5% of $100K).

Equity partner. A passive equity partner who contributes cash without expecting repayment can provide the equity injection. The SBA will require the equity partner to also guarantee the loan if they own 20% or more of the entity. Ownership stakes below 20% do not trigger the personal guarantee requirement, but this should be structured carefully with legal counsel.

How the Seller Note on Full Standby Gets Documented

The standby seller note is a promissory note between the buyer (or the acquiring entity) and the seller. It specifies the principal amount, a 0% interest rate, and a payment schedule that begins after the SBA loan is fully paid off (or at year 10, whichever comes first). The SBA lender will require the seller to sign a standby agreement confirming they will not receive any payments during the standby period.

This is not a handshake deal. The documentation needs to be airtight. Regalis Capital's team works with transaction attorneys to make sure the standby note is structured in a way the SBA lender will accept. A poorly drafted seller note is one of the most common reasons SBA deals get delayed or restructured at the 11th hour.

According to Regalis Capital's deal team, sellers who initially resist the standby note concept almost always come around once they understand the alternative: the deal may not close at all without it. A 10-year deferral on 5% of the sale price is a small price for a seller who wants liquidity on the other 95% at closing.

Understanding the Full Acquisition Capital Stack

The SBA 7(a) loan does not have to be the only layer of financing. In a typical Regalis Capital deal structure, the capital stack adds up to exactly 100% of total project cost in one of two shapes.

In the clean minimum-injection shape: SBA 7(a) loan 85%, buyer cash 5%, full-standby seller note 5% (counts as equity), and a closing-costs-and-working-capital slice of 5%, summing to 100% of total project cost. The two 5% injection pieces are the 10% equity injection.

In the larger seller-carry shape: SBA 7(a) loan 80%, buyer cash 5%, and a 15% seller note, of which 5% sits on full standby and counts as the equity-injection portion while the other 10% is subordinate debt at market rate (payments typically deferred 6 to 12 months after closing) that does NOT count as equity. In the worked $750K and $1.5M tables below, the stated base is the total project cost and the closing-costs-and-working-capital need is funded inside the 5% buyer cash and seller-carry layers rather than broken out on a separate line.

In both shapes the SBA loan carries a 10-year term at rates currently around 10% to 11% based on WSJ Prime plus 1.5% to 2.75%, the genuine-cash floor is always 5%, and the full-standby note that counts as equity is capped at 5%. Understanding how these layers interact is the foundation of SBA acquisition financing. See the equity injection glossary page for formal definitions, and use the acquisition calculator to model your specific deal.

The debt service coverage ratio (DSCR) is the metric that determines whether the full capital stack is serviceable. Regalis Capital targets a 2.0x DSCR at minimum, with a floor of 1.5x when synergies are credibly underwritten. At 1.25x, the deal does not pencil regardless of how the equity is structured.

When the Equity Injection Gets Complicated

A few situations require extra attention.

Partial cash, partial ROBS. If the buyer is funding part of the equity with cash and part via ROBS, the lender needs documentation from both sources. The ROBS administrator will provide a letter confirming the fund transfer. Both sources are counted together toward the 10% requirement.

Multiple buyers. If two partners are buying a business together, their combined equity injection still needs to hit 10%. The split between them is flexible, but the lender will verify the source of each person's contribution independently.

Business assets as equity. In some cases, a buyer may be contributing equipment or other assets rather than cash. The SBA allows this in specific circumstances, but the assets must be appraised and the value must be verified by the lender. This is less common in pure business acquisitions and more relevant in asset-heavy deals with real estate or heavy equipment.

Standby note with a balloon. Some sellers will accept a standby structure but want a balloon payment at year 5 rather than year 10. Depending on the lender, this may or may not qualify as a full standby note. The safer structure from an SBA compliance standpoint is a note that runs the full term of the SBA loan.

Frequently Asked Questions

What is the minimum equity injection required for an SBA 7(a) acquisition loan?

The minimum equity injection is 10% of total project cost (purchase price plus closing costs, working capital, and other completion costs). This is not the same as a down payment. It represents capital from non-borrowed sources that goes into the deal. The standard structure is 5% buyer cash plus a 5% seller note on full standby at 0% interest, with no payments during the SBA loan term.

Can I use a home equity line of credit to fund my SBA equity injection?

Only if you document an outside repayment source separate from the business. Under SBA SOP 50 10 8 (effective June 1, 2025), borrowed funds like a HELOC count toward the injection only when an outside source repays them; the business's own cash flow no longer qualifies. Clean sources are non-borrowed cash, ROBS, gifts with a letter, and a full-standby seller note.

What does "full standby" mean on a seller note?

Full standby means the seller receives zero payments on their note for the entire duration of the SBA loan term, which is typically 10 years. No interest accrues. No principal payments are made. The seller receives their deferred amount either at the end of the term or upon a sale or refinancing of the business. Regalis Capital achieves full standby terms on the vast majority of transactions.

How does ROBS work for SBA equity injection?

A ROBS (Rollover for Business Startups) allows a buyer to roll funds from a qualified retirement account, such as a 401(k) or IRA, into a new C-corporation that invests in the acquisition. Because the funds are invested rather than withdrawn, no early withdrawal penalty or immediate income tax applies. The invested funds count as equity for SBA purposes. Setup typically costs $5,000 to $10,000 with ongoing annual fees of $1,500 to $2,500.

Can the seller contribute more than 5% on full standby to reduce my cash requirement?

A larger seller note on full standby can help fund the broader capital stack, but it cannot replace the mandatory 5% genuine-cash floor. Under SBA SOP 50 10 8 the full-standby note counts as equity only up to 5% of total project cost (half of the 10% injection), so at least 5% must always be genuine non-borrowed buyer cash. The total equity injection (seller note plus buyer cash) still has to reach 10%. The only structure that waives the buyer's injection is a qualifying same-NAICS expansion, and a lender may still require cash even then.

Does a gift from a family member count toward the equity injection?

Yes, provided the gift is properly documented. The donor must provide a signed gift letter confirming no repayment is expected, and the lender will typically request bank statements from the donor showing the source of the gifted funds. Undocumented transfers between family members are treated as loans by SBA lenders until proven otherwise.

What happens to the seller note if I sell the business before the SBA loan term ends?

The standby seller note typically becomes payable upon a change of ownership or refinancing of the SBA loan, whichever comes first. This means if you sell the business in year 4, the seller receives their deferred amount at that closing. The exact terms depend on how the note is drafted, which is why having a transaction attorney involved in the documentation is non-negotiable.

At what acquisition price does the 5% cash requirement become too large for SBA 7(a)?

The SBA 7(a) loan maximum is $5M. At a $5M acquisition, the buyer cash injection at 5% would be $250,000. Most buyers targeting the upper end of the SBA range either use ROBS to supplement their cash or structure a larger seller note on full standby. Regalis Capital focuses on deals in the $500K to $5M range, and the equity injection structure scales linearly across that range.

Ready to Model Your Equity Injection?

Equity injection is where a lot of deals get stuck before they even reach a lender. Getting the structure right early means faster approvals and fewer surprises at closing.

Regalis Capital reviews upwards of 20,000 deals a month and structures SBA acquisitions across all deal sizes from $300K to $5M. If you are trying to figure out how much cash you actually need, what a seller note structure looks like for your target business, or whether ROBS makes sense for your situation, start with a deal assessment.

Start your deal assessment at Regalis Capital and get a clear picture of what your equity injection structure should look like before you make an offer.

About Regalis Capital

Regalis Capital is a buy-side acquisition advisory firm that helps buyers find, value, and close small business acquisitions. Its team reviews upwards of 20,000 deals a month.