How to Finance a Business Acquisition (5 Ways)

SBA 7(a) — The Default Path

The SBA 7(a) loan is the most common source of business acquisition financing for individual buyers acquiring businesses in the $500K–$5M range. It isn't a direct government loan — it's a guarantee that lets approved private lenders extend terms they would otherwise decline: as little as 10% down, 10-year repayment, and loan amounts up to $5 million.

For buyers with strong personal credit (680+), relevant experience, and a target business with at least three years of documented earnings, SBA is usually the best starting point. The guarantee lowers the lender's risk, which lowers your required equity and extends your repayment runway. A $1.5M business acquisition that might require $600,000 down through a conventional bank can often be done with $150,000 down through SBA.

The program has real constraints: the business must be SBA-eligible, the deal must appraise at or above the purchase price, and your DSCR must clear the lender's minimum — typically 1.25x. Deals that miss on any of these dimensions need a different lead structure, often involving more seller financing.

Seller Financing and Seller Notes

A seller note is a portion of the purchase price that the seller accepts as deferred installment payments rather than cash at close. Instead of the buyer paying the full price upfront, the seller effectively loans a portion of it — and the buyer repays that amount over a defined term, typically 3–7 years, at a negotiated interest rate.

Seller notes are common in lower middle market deals for two reasons. First, they reduce the buyer's required cash and institutional financing. A deal that might require $300,000 in equity injection with a full bank loan might only require $150,000 if the seller carries a 10% note. Second, seller notes align the seller's incentive with successful transition — a seller who holds paper on the deal has real financial motivation to ensure the buyer inherits a clean business and a cooperative handoff.

In SBA deals, seller notes that are counted toward the buyer's equity injection must be placed on full standby for 24 months — no principal or interest payments to the seller during that period. After standby, the buyer begins paying both the SBA loan and the seller note simultaneously, which affects the post-standby DSCR calculation. Model both before you agree to a note structure.

Outside of SBA deals, seller notes are more flexible. Terms, interest rates, and amortization schedules are negotiated directly between buyer and seller — often with input from advisors on both sides.

Earnouts: Paying for Future Performance

An earnout is a contingent portion of the purchase price paid to the seller based on the business's post-close performance. Instead of paying a fixed price at closing, the buyer pays a base price now and an additional amount later — if specific revenue, EBITDA, or retention targets are met over a defined period.

Earnouts are most common in three situations: when the buyer and seller disagree on valuation (earnouts bridge the gap without forcing either side to concede on price), when a significant portion of revenue depends on customer relationships the seller will continue managing post-close, or when the business is in a growth phase and future performance is genuinely uncertain.

From a buyer's perspective, earnouts reduce upfront risk — you pay more only if the business actually delivers what the seller promised. From a seller's perspective, earnouts can produce a higher total payout than a conservative clean-price deal, but they create uncertainty and post-close dependency. Sellers who want a clean exit often resist earnout structures.

Earnouts require careful drafting. The performance metrics must be objective and verifiable, the measurement period must be clearly defined, and the buyer's obligations during the earnout period (investment, hiring, marketing) must be specified to prevent disputes. Earnouts structured poorly are a common source of post-close litigation in small business acquisitions.

ROBS: Using Retirement Funds to Buy a Business

ROBS — Rollover for Business Startups — is a legal structure that allows buyers to use qualified retirement account funds (401(k), traditional IRA, or similar) as equity in a business acquisition without triggering early withdrawal penalties or income tax on the funds used.

The structure works as follows: the buyer establishes a C-corporation, the new corporation creates a qualified retirement plan, the buyer rolls their existing retirement funds into that new plan, and the plan purchases stock in the corporation. The corporation then uses those funds as equity — for the down payment, the equity injection in an SBA deal, or as direct working capital in a non-SBA acquisition.

ROBS is a legitimate and IRS-recognized structure, but it requires a specialized ROBS administrator and creates ongoing compliance obligations: the corporation must maintain the retirement plan, file appropriate reports, and meet annual plan requirements. The setup cost typically runs several thousand dollars, with ongoing annual administration fees.

For buyers who have substantial retirement savings but limited liquid capital, ROBS can be the difference between qualifying for a deal and not. Many SBA lenders accept ROBS-funded equity injections, though you must disclose the structure upfront. Do not attempt a ROBS without an experienced administrator — the compliance requirements are real and the penalties for improper execution are significant.

Outside Capital: Partners and Investors

Some buyers bring in outside capital partners — friends and family, fellow operators, or formal investors — to meet equity requirements or acquire a business that would otherwise exceed their individual capacity. This structure is more complex than solo financing but can open deals that are otherwise out of reach.

The most straightforward version is a co-buyer arrangement: two buyers split the equity injection, the management responsibilities, and the ownership stake. This works well when both buyers bring complementary skills and have a clear delineation of roles. The risk is personal and professional — operating a business together is more complicated than owning it together on paper, and disagreements over strategic direction or distributions can end both the partnership and the business.

For buyers targeting larger acquisitions, equity from an individual investor or a small investment group is another path. The investor provides capital in exchange for a minority ownership stake, often with preferred return terms or a put option at a defined price. These structures require experienced legal counsel and honest alignment conversations about exit timelines and decision-making authority before the deal closes.

Self-funded search funds sit in a category of their own: a buyer raises a modest fund from investors to fund their search and acquisition, with the investors receiving equity in the business acquired. This model has a defined playbook in the acquisition entrepreneurship community and is worth researching if you're pursuing a structured, investor-backed search.

How to Stack the Financing: A Real Example

In practice, most business acquisition financing structures combine two or more sources. A typical lower middle market deal might layer SBA financing, a seller note, and a ROBS equity injection to minimize the buyer's out-of-pocket cash while keeping the deal structure clean enough to satisfy an SBA lender.

A simplified example at a $1.5M acquisition price:

SBA 7(a) loan: $1.2M (80% of purchase price), 10-year term. Requires 20% equity injection — $300,000.

ROBS equity injection: Buyer rolls $200,000 from retirement accounts into the new C-corp to fund $200,000 of the required equity.

Seller note: Seller carries a $100,000 note on full standby for 24 months, which satisfies the remaining $100,000 of equity injection requirement under SBA guidelines.

Cash at close: $0 liquid out-of-pocket (assuming ROBS funds the remaining equity, seller note is counted, and SBA funds the loan).

This is a simplified illustration. Real deal structures depend on the specific lender's requirements, the business's DSCR at the blended debt service, and whether the appraised value supports the purchase price. Run the DSCR on any combined structure before you negotiate — the number that matters is whether the business's adjusted EBITDA covers all debt service (SBA loan + seller note after standby, if applicable) at 1.25x or above.

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