Understanding the LBO, or leveraged buy-out

The leveraged buy-out, or LBO, refers to a transaction in which an investor acquires a company by financing the purchase price mostly through debt, which is then repaid using the cash flows generated by the acquired business. The mechanism has become the standard of private equity across the mid-market and large-cap segments, and accounts for a significant share of deals carried out by PE funds in Europe.

What is an LBO?

The principle of the leverage effect

An investor, typically a private equity fund, sets up a dedicated holding company, sometimes referred to as a NewCo or HoldCo, whose sole purpose is to acquire 100% of the target company's share capital. This holding finances the transaction with a minority share of equity contributed by the fund and a majority share of debt raised from banks or private debt funds. The cash flows generated by the target then flow up to the holding as dividends to service and repay the acquisition debt.

The structure relies on three leverage effects that combine. The financial leverage first: by committing only a fraction of the price in equity, the fund mechanically amplifies the return on its own funds if the deal performs. The tax leverage next: interest on the debt held by the holding is deductible, and the parent-subsidiary regime allows dividends from the target to flow up under a favourable tax treatment. The operational leverage finally: during the holding period, typically five to seven years, the fund implements tighter governance and a value creation plan aimed at improving margins and growth.

The main LBO variants

The LBO takes different forms depending on who the buyer is. The MBO (Management Buy-Out) refers to a buy-out led by the existing management team, the MBI (Management Buy-In) to a buy-out led by external managers, and the BIMBO to a combination of the two. The OBO (Owner Buy-Out) allows a founder or majority shareholder to sell part of their stake to themselves through a HoldCo, in a wealth-planning logic. The LBU (Leveraged Build-Up) finally relies on a first acquisition used as a platform to roll up additional companies in the same sector and build a larger group through external growth.

How acquisition debt is structured in an LBO

Senior debt

Senior debt is the most secured tranche of the structure. It ranks first for repayment, is generally secured against the assets of the target, and has historically accounted for 50 to 60% of total financing. It is provided by commercial banks, at a moderate interest rate reflecting its lower risk, and amortised progressively over five to seven years.

Mezzanine debt

Mezzanine debt sits between senior debt and equity. Subordinated, it is repaid only after the senior debt has been fully extinguished, most often as a bullet, over eight to ten years. Its remuneration typically combines a cash coupon, a capitalised interest portion in the form of PIK interest and sometimes an equity kicker through warrants. It allows leverage to be extended without further diluting shareholders.

Unitranche debt

Unitranche debt, a more recent format, merges senior and subordinated debt into a single instrument provided by one lender, typically a private debt fund. It has become the standard on the mid-market because it simplifies negotiation, accelerates execution and offers greater structuring flexibility than traditional bank arrangements.

The leverage ratio

The leverage of an LBO is expressed as a multiple of EBITDA. Across the European mid-market, total leverage usually sits between three and six times EBITDA, with higher levels on large-cap deals or in highly defensive sectors. Beyond that point, the rigidity of debt servicing becomes a source of fragility that can turn leverage into value destruction in the event of operational underperformance.

The sources of value creation in an LBO

This is where the analysis becomes most relevant for an asset manager. The performance of an LBO never comes down to leverage alone, and decomposing the sources of return is what reveals the true quality of a deal. Three levers explain equity value creation between entry and exit.

Deleveraging

With every euro of debt repaid through operating cash flow, the equity share in the capital structure mechanically increases, even without any growth in the business. Deleveraging was historically the dominant driver of LBOs in the 1980s, where it accounted for up to 50% of value creation. Its typical contribution today sits closer to 20 to 30%.

EBITDA growth

EBITDA growth comes from a combination of top-line growth, margin improvement and bolt-on acquisitions completed during the holding period. In contemporary LBOs, it has become the dominant lever, often contributing 40 to 60% of total returns. It is also the only driver that reflects real operational value creation, independent of market conditions.

Multiple expansion

Multiple expansion captures the difference between the EBITDA multiple paid at entry and the one obtained at exit. It can result from strategic repositioning of the target, favourable sector dynamics, or the quality of the sale process. It is the least predictable of the three levers, and well-structured LBO models are built to remain profitable even at a constant multiple. This decomposition is reflected in the calculation of MOIC and IRR at exit, and forms the standard framework used by LPs to analyse performance.

Monitoring and valuing an LBO during the holding period

For an asset manager, signing the SPA is only a starting point. The investment will sit on the fund's balance sheet for five to seven years, and must be monitored, valued and reported at every quarterly close.

Valuing an LBO investment at fair value

Fair value measurement of an LBO investment follows the principles set out in the IPEV Valuation Guidelines. The dominant approach remains the market multiples method: an EBITDA multiple derived from listed comparables or recent transactions is applied to the current EBITDA of the target, and net debt is then deducted to arrive at the equity value attributable to the fund. The specificity of an LBO lies in the weight of net debt in the calculation: a modest change in either EBITDA or the multiple, combined with high leverage, produces amplified moves in NAV on the equity line. Careful calibration at entry, followed by consistent updates quarter after quarter, requires strict methodological discipline.

Covenant monitoring

Covenant monitoring is the second pillar of post-closing oversight. Acquisition debt agreements typically include financial ratios to be observed at every reporting date, usually a maximum leverage ratio and an interest coverage ratio. A breach triggers serious contractual consequences, up to acceleration of the debt. On the GP side, monitoring these ratios should therefore be embedded in portfolio reporting, ideally in real time for the most exposed investments.

Preparing the exit

Preparing the exit calls for granular modelling of the distribution waterfall, in order to anticipate how exit proceeds will be split between residual debt repayment, return to LPs, hurdle rate and carried interest. This projection feeds both the trade-off between available exit routes, whether IPO, trade sale or secondary buy-out, and the management of investor expectations.

ScaleX Invest and the monitoring of private equity investments

ScaleX Invest supports asset managers running private equity investments, including in the buy-out segment, across the full NAV and reporting cycle. The platform centralises every instrument in the portfolio, equity and debt alike, into a single source of truth with full visibility on cap tables and debt schedules. Its Benchmark layer draws on more than 15,000 private European transactions to anchor the multiples used in documented comparables that stand up to auditor scrutiny. The IPEV-native valuation engine then produces fair value with a complete audit trail, ready for sign-off.

Conclusion

The LBO remains a powerful tool for asset managers, provided both the structuring mechanics and the post-closing monitoring requirements are mastered. The difference between a successful deal and a distressed one rarely comes down to the quality of the initial structure. It comes down to the rigour of operational monitoring, the precision of quarterly valuations, and the anticipation of exit paths across the entire holding period.

FAQ

What is the difference between an LBO and an MBO?
The LBO refers to the broader mechanism of acquisition through leverage, regardless of who the buyer is. The MBO is a specific variant in which the existing management team acquires the company, usually with the backing of a financial sponsor.

What is a typical leverage multiple on an LBO?
On the European mid-market, total leverage most often sits between three and six times EBITDA. Large-cap deals or highly defensive sectors can sustain higher multiples, at the cost of increased fragility in the event of underperformance.

How long does an LBO typically last?
The standard holding period sits between five and seven years. It reflects the time needed to execute the value creation plan, materially deleverage the holding, and prepare an exit under favourable market conditions.

How is an LBO investment valued during the holding period?
Valuation follows the IPEV Valuation Guidelines, most often through a market multiples approach applied to current EBITDA, from which net debt is deducted to derive equity value. Leverage amplifies the sensitivity of NAV to changes in EBITDA and exit multiple.

What are the main risks of an LBO?The main risk lies in the rigidity of debt servicing in the event of a downturn in activity. Operational underperformance can quickly lead to a covenant breach, triggering renegotiation or, in more severe cases, a debt restructuring.