How to Structure a Leveraged Buyout (LBO) for SMEs

A leveraged buyout (LBO) uses a combination of debt and equity to acquire a business, with the target company’s cash flow servicing the debt. While LBOs are associated with large PE deals, the Stanford 2024 Search Fund Study confirms that the same used principles apply to SME acquisitions in ETA. Here’s how to structure one.

How an LBO works

1. Acquire: Buy a business using a mix of debt (60-80%) and equity (20-40%)
2. Operate: Use the business’s cash flow to service and repay the debt over 5-10 years
3. Grow: Increase EBITDA through organic growth, pricing, and operational improvement
4. Exit: Sell at a higher EBITDA and/or multiple, generating outsized equity returns

The three return drivers

• Debt paydown: As the business repays debt, equity value increases. At 4x use, paying down 1 turn of debt adds 25% to equity
• EBITDA growth: Organic and acquisitive growth directly increases enterprise value
• Multiple expansion: Buy at 4x, sell at 6-8x. The most powerful (and least reliable) return driver

SME LBO capital structure

Typical structure

• Senior debt: 50-70% of purchase price. See capital stack guide
• Seller note: 10-20%. See seller financing
• Equity: 15-35% from buyer and/or investors

Leverage ratios

• Total debt / EBITDA: 3-4.5x for SMEs (vs. 5-7x for large PE deals), per Pepperdine Private Capital Markets data
• Senior debt / EBITDA: 2.5-3.5x (SBA or bank)
• DSCR: Minimum 1.25x, the business generates $1.25 for every $1 in debt payments
• Fixed charge coverage: 1.1x+ including capex, taxes, and debt service

LBO modeling for SMEs

Key assumptions

• Entry multiple: 3-6x EBITDA. See multiples by industry
• Revenue growth: 3-8% annually (conservative for planning)
• Margin improvement: 1-3% EBITDA margin expansion through operational improvement
• Hold period: 5-7 years (matches debt term and QSBS holding period)
• Exit multiple: 4-8x EBITDA (conservative: same as entry; optimistic: 1-2 turns higher)

Example: $5M EBITDA business

• Purchase price: $25M (5x EBITDA)
• Debt: $17.5M (3.5x EBITDA, 70% of price)
• Equity: $7.5M (30%)
• After 5 years: EBITDA grows to $7M, debt paid down to $12M
• Exit at 6x: $42M enterprise value − $12M debt = $30M equity
• Equity return: 4x MOIC, ~32% IRR on $7.5M invested

Debt sources for SME LBOs

• SBA 7(a): Up to $5M, 10-year term. Best for smaller deals. See SBA guide
• Commercial banks: $1M-$25M, 5-7 year terms. Requires strong cash flow
• Private credit: $5M-$50M+. More flexible on use and covenants
• Mezzanine funds: $1M-$10M subordinated debt at 12-18% total cost
• Seller notes: 10-30% of price at 4-8% interest. Subordinated to bank debt

Key risks in SME LBOs

• Revenue decline: A 10-15% revenue drop can eliminate free cash flow. See why search funds fail
• Interest rate risk: Variable-rate debt exposes you to rate increases. Consider caps or fixed rates
• Working capital surprises: Seasonal working capital needs create cash crunches in used businesses
• Over-use: Conservative use (3-3.5x) is safer than aggressive (4.5x+)
• Customer concentration: Losing a major customer in a used business is existential

LBO vs. other acquisition models

• vs. All-equity: LBO generates higher returns through use but carries more risk
• vs. Self-funded SBA: SBA is effectively a small LBO, 80% debt, 10% seller note, 10% equity
• vs. Traditional search fund: Search funds use moderate use (2-3x) vs. full LBO (3.5-4.5x)

Building an LBO model: step by step

Every SME LBO should be modeled in a spreadsheet before committing capital. The core components are: (1) sources and uses of funds at acquisition, (2) a 5-7 year income statement projection, (3) a debt schedule showing amortization for each tranche, (4) free cash flow calculation incorporating maintenance capex and working capital changes, and (5) an exit analysis with sensitivity to exit multiple and EBITDA at exit. Run downside scenarios: what happens if revenue declines 10%? What if interest rates rise 200 basis points? What if a key customer is lost? A strong model identifies the conditions under which the deal breaks and helps you set appropriate purchase price limits.

For related guides, see acquisition financing, creative financing, investor economics, and our detailed LBO structuring guide.

Frequently asked questions

What is a good IRR target for an SME LBO?

Most search fund investors target a gross IRR of 25-35% on equity invested over a 5-7 year hold period. This translates to a 3-5x multiple on invested capital (MOIC). Self-funded buyers often target higher returns (35%+) to compensate for the personal risk and concentration. The Stanford 2024 Study reports that the median completed search fund acquisition generates approximately 2.9x MOIC, while the top quartile exceeds 5x. Returns are driven by the combination of debt paydown, EBITDA growth, and multiple expansion at exit.

How do variable interest rates affect SME LBOs?

Most SBA 7(a) loans and commercial bank acquisition loans carry variable rates tied to the Prime rate or SOFR. A 200 basis point increase on $5M of debt adds $100K in annual interest expense, which directly reduces free cash flow. To mitigate this risk, buyers can negotiate interest rate caps (costing 0.5-2% of the loan amount), choose fixed-rate options when available (KfW in Germany, some SBA products), or structure the deal with more conservative leverage ratios that can absorb rate increases.

What is the difference between an LBO and a management buyout (MBO)?

An LBO is any acquisition financed primarily with debt. An MBO is a specific type of LBO where the existing management team purchases the business, often with financial backing from PE investors or lenders. In the ETA context, a search fund acquisition is technically an LBO (used) but not an MBO (the buyer is external). Self-funded ETA acquisitions using SBA financing are also LBOs in structure, even though they may not use the term. The mechanics, leveraged acquisition with cash flow servicing debt, are identical.