Private Equity Doesn't Buy Your Company - It Borrows Against It. Here's How.

Owners generally assume that when a private equity firm buys their company, the firm is spending its own money. Mostly, it isn't. Most of the purchase price is debt, placed directly on the company being acquired, and paid back out of the cash flow that business generates going forward. The company effectively finances its own sale.

The leveraged buyout, in plain terms

This structure has a name: the leveraged buyout, or LBO - one of seven types of buyouts that get financed this way, separated by who supplies the equity sitting on top of the debt rather than by the debt itself. It is worth understanding before you enter a process, because the capital stack is settled during exclusivity - see how to sell a business to private equity for where in the timeline that happens. A private equity firm puts up a relatively small slice of its own equity - typically somewhere between 20% and 40% of the purchase price - and borrows the rest, using the target company's own assets and future cash flow as collateral for that debt (Wall Street Prep; Sofer Advisors). Historical LBO debt levels have run as high as 60-90% of the purchase price, and even in today's higher-interest-rate environment, a typical middle-market deal still runs 50-70% debt against 30-50% equity (Leeds School of Business, University of Colorado; Stirling Corporate Group).

In a $50 million lower-middle-market deal, a typical 2026 capital structure looks something like 35-45% senior debt, 10-15% mezzanine or subordinated debt, 30-40% sponsor equity, and the rest split between seller financing and any earnout (CT Acquisitions, Leveraged Buyout Acquisition Financing Guide). Global buyout companies have carried an average leverage ratio of 1.74 over the ten years through 2023 - roughly 74 cents of debt for every dollar of the sponsor's own equity (MSCI).

A worked example: what the debt does to $6M of EBITDA

Percentages are easy to nod along to. Here is the same structure in dollars, on an invented company - not a quote, a projection, or a description of any transaction.

Take a business with $6 million of normalized EBITDA and no funded debt today. GF Data's sponsored-deal universe puts the $25M-$50M enterprise value band at 6.8x to 7.2x across 2021-2025 (Capital Pad, citing GF Data), so assume a purchase price of 7.0x, or $42 million. A conventional lower-middle-market stack might look like this.

Source of funds	Amount	Share of price	Who is on the hook
Senior debt (3.0x EBITDA)	$18,000,000	43%	The company
Mezzanine / subordinated debt (0.75x)	$4,500,000	11%	The company
Sponsor equity	$15,000,000	36%	The fund
Seller rollover equity	$4,500,000	10%	You, reinvested

The fund's own check is $15 million against a $42 million price. Your company supplies $22.5 million of the purchase price by borrowing it, and you supply another $4.5 million by not being paid it.

Now run the debt service. At an illustrative 10% blended rate across the senior and mezzanine tranches, interest alone is roughly $2.25 million a year. Add scheduled amortization on the senior facility of 10% annually - another $1.8 million - and the business is committing about $4.05 million of its $6 million of EBITDA, roughly two-thirds, to servicing debt that did not exist the week before closing. Whatever cash taxes and maintenance capital expenditure the company also needs comes out of the remaining $1.95 million.

That ratio is the whole story of what changes after close. Growth investment, hiring ahead of demand, and the cushion for a bad quarter all now compete for the last third of the cash flow. Nothing about the offer price told you this; it is entirely a function of how the offer was funded. The rollover slice deserves the same scrutiny - what actually happens to rollover equity over a sponsor's hold period is the part sellers most consistently misjudge, and the full side-by-side comparison runs the after-tax version of these numbers. Before you evaluate anyone's stack, get your own enterprise value roughly right with the business valuation calculator, and if the leverage is the part you object to rather than the price, there are routes to liquidity that do not put a sponsor on your cap table.

Why this matters to the seller, not just the buyer

None of this changes what shows up on your term sheet as the offer price. It changes what happens to the company the moment the deal closes. Before the acquisition, your company generated cash flow that funded growth, payroll, and reinvestment. After the acquisition, a meaningful share of that same cash flow is redirected to service acquisition debt that didn't exist the day before.

That debt service obligation is now baked into the business - it constrains hiring, capital expenditure, and strategic flexibility for however long the loan is outstanding, regardless of who's running the company day to day. It's also the mechanism that gives lenders and the sponsor real leverage over major operating decisions: financial covenants attached to that debt commonly restrict things like additional borrowing, large capital expenditures, or changes to the business without lender consent (Macabacus, LBO Capital Structure). The sponsor's equity documents typically add a second layer of restrictions on top of the lenders' - the consent rights an investor negotiates cover much of the same ground. Weighed against what the leverage buys you - a competitive multiple, partial liquidity, acquisition capital - it is the core entry on the cost side of the pros and cons of selling to private equity.

The "mortgage" analogy, and where it holds up

Private equity doesn't buy your company with a check drawn on its own balance sheet the way a strategic acquirer typically does. It's closer to taking out a mortgage against the business - the company's own future income is pledged to pay down debt the sponsor used to acquire it. The sponsor's actual cash investment is the smaller piece of the capital stack; the company's own future cash flow carries the larger share of the load (Wall Street Prep).

The analogy has a limit worth naming honestly: unlike a homeowner's mortgage, this debt is secured against the company's operating assets and cash flow, not against the seller's personal balance sheet - the seller has typically already been paid at close (subject to any rollover or earnout terms) and doesn't personally owe the debt. But the company that once generated cash flow for its owner now generates cash flow for its lenders and its new sponsor first.

The time to work out whether you are willing to hand the company's cash flow to a lender is before anyone sends a letter of intent, not during exclusivity when the stack is already drafted. That is the whole argument for exit planning for business owners starting years ahead of a transaction: the structure you are offered depends heavily on how clean the financials are, how concentrated the customer base is, and whether the business can run without you - and every one of those takes time to change. It is also the argument for settling which exit you want before someone pitches you one: a debt-funded sale is a single route among several, and every business exit strategy option compared side by side makes it obvious which structures put leverage on the company and which leave the balance sheet alone. A management buyout puts leverage on the company too, but assembles it from different places: how a management buyout actually gets financed works through the four layers a team with no fund behind it has to stack - senior bank debt at 50-65% of the deal, mezzanine at 15-25%, a seller note at 20-40%, and management's own cash at 10-30%.

What it looks like from the inside after close

• Debt service becomes a fixed obligation. Interest and principal payments on the acquisition debt are now a line item that has to be met before anything else, regardless of how the business is performing that quarter.
• Covenants can restrict decisions leadership used to make freely. Additional borrowing, major capital expenditures, or a change in the line of business can all require lender or sponsor sign-off under typical LBO loan terms.
• The math has to work even in a downturn. A highly leveraged company has less room to absorb a bad year than an unleveraged one, because the debt payments don't flex with revenue. It bites hardest in thin-margin, unit-heavy sectors - the recurring complaints in restaurant M&A after a leveraged roll-up are reduced reinvestment in existing locations and slower approval for senior hires.
• Contract terms can decide who absorbs the debt service. In cost-reimbursement government contracting, FAR 31.205-20 makes interest on borrowings unallowable, so an acquirer's leverage gets serviced out of the contractor's own fee rather than reimbursed - one reason the financing arithmetic behind a government contractor's ownership transition lands differently from a commercial deal.

How an Independent Buyout uses financing differently

An Independent Buyout also uses financing against the company - that part of the LBO mechanics is genuinely similar (Angel Investors Network, LBO Mechanics Explained). What's different is who's on the other side of that structure: the company's own existing leadership team becomes the buyer, rather than an outside financial sponsor who now holds board seats and a say over major decisions. The mechanism has existed in the federal tax code since 1984 under Internal Revenue Code Section 1042, and depending on the seller's specific facts, may allow proceeds to be structured for tax-advantaged treatment - always confirm the specifics with your own tax advisor. The company still carries financing. It just isn't answering to a new outside owner for the length of that loan.

Frequently asked questions

Does private equity use its own money to buy a company? Only partially. Typically 20-40% of the purchase price is the sponsor's own equity; the rest is debt placed on the target company, secured by its assets and repaid from its future cash flow.

Does the seller personally owe any of the acquisition debt? No. The debt is secured against the company's assets and cash flow, not the seller's personal finances. But the company the seller built now carries that obligation going forward.

Why would a private equity firm want to use so much debt? Debt amplifies returns on the sponsor's own equity - a smaller equity check means a larger percentage return if the deal performs well, which is core to how the leveraged buyout model works for the fund's investors.

Does an Independent Buyout also use debt financing? Yes - the mechanics of financing the purchase against the business itself are broadly similar to a leveraged buyout. The structural difference is who becomes the buyer and who holds governance authority afterward, not whether financing is used at all.

How does acquisition debt affect day-to-day operations after a PE sale? Debt service becomes a fixed, recurring obligation, and loan covenants can require lender or sponsor approval for major decisions like additional borrowing or large capital expenditures - constraints that didn't exist before the transaction.

Sources

• Wall Street Prep - "Acquisition Financing: LBO Capital Structure"
• Sofer Advisors - "What Is a Leveraged Buyout? LBO Structure Explained"
• Leeds School of Business, University of Colorado - "Leveraged Buyouts and Private Equity"
• Stirling Corporate Group - "Understanding Leveraged Buyouts (LBOs): Complete Guide"
• CT Acquisitions - "Leveraged Buyout Acquisition Financing Guide (2026)"
• MSCI - "Leverage in Private Equity: What Do We Know?"
• Macabacus - "Capital Structure of an LBO"
• Angel Investors Network - "LBO Mechanics Explained"
• Capital Pad - "Lower Middle Market EBITDA Multiples" (citing GF Data)
• 26 U.S. Code § 1042 - Cornell Law School Legal Information Institute

The bottom line

The check a private equity firm writes for your company is mostly borrowed - secured against the business itself and repaid from its future cash flow. That doesn't make the deal bad, but it does mean the company you built keeps working to pay down debt long after you've signed, under new ownership that structured the whole transaction to work in its favor first. An Independent Buyout can use similar financing mechanics without handing that ownership and governance authority to an outside sponsor.

If your company is doing $3M+ in EBITDA and you want to understand how a specific offer is actually financed before you sign anything, talk to IBO Advisors about your business.