Mezzanine Financing
Subordinated debt or preferred equity that sits between senior debt and common equity in an LBO capital structure — costlier than senior debt but cheaper than equity, with flexible terms and often equity-like upside features.
Full Definition
Mezzanine financing (often just "mezz") is the layer of capital in leveraged buyouts that fills the gap between senior debt and sponsor equity. Senior lenders want to lend at 3-4x EBITDA at attractive rates; sponsors want to put in 30-40% equity for return targets; the gap between these leaves 1-2x of EBITDA that needs capital. Mezzanine fills that gap.
How it actually works: Mezzanine typically has these features: (1) subordinated to senior debt in payment priority; (2) 5-7 year term, often interest-only for initial years then balloon payment or bullet maturity; (3) interest rate of 11-14% all-in, split between cash pay (typically 10-12%) and PIK (payment-in-kind, 1-3%); (4) warrants or equity co-invest giving mezzanine lender additional equity upside; (5) covenants less restrictive than senior debt but still present; (6) intercreditor agreement governing relationship with senior lender.
For borrowers, mezzanine is expensive but flexible: patient, less covenant-heavy than senior debt, and willing to lend against cash flow without hard collateral. For lenders, mezzanine is risk-adjusted return capital — higher risk than senior but lower than pure equity, with contractual returns plus upside.
In the LMM space, mezzanine is typically provided by specialty BDCs, SBIC funds, and dedicated mezzanine funds. Unitranche financing (single lender combining senior and sub tranches) has partly displaced separate mezzanine in LMM deals under $50M, but pure mezz remains common in deals $30M-$250M.
Seller vs. Buyer Perspective
Mezzanine doesn't directly affect you as seller — it's between your buyer and their lenders. But it affects deal certainty and terms. Heavy use of mezzanine (2x+ EBITDA) indicates aggressive capital structure, which can pressure post-close operations and seller notes subordinated below mezzanine. Your seller note will sit below mezzanine in priority, often below all institutional debt. That means limited security and high loss exposure in downside scenarios. Price your seller note accordingly or require specific security/guarantees.
Mezzanine lets you stretch deal economics with more leverage. Tradeoffs: (1) higher total debt service; (2) warrants dilute your equity return; (3) mezzanine covenants add operational restrictions; (4) intercreditor dynamics add complexity in any workout. Alternative: more equity (from LPs or co-investors) — less accretive to IRR but simpler. Optimal structure depends on business stability, sponsor return targets, and capital availability. Don't over-lever — 5x+ debt multiples leave no cushion for unexpected setbacks.
Real-World Example
A PE-backed deal for a $7M EBITDA business at $42M enterprise value. Capital structure: $18M sponsor equity (43%), $21M senior debt (3x EBITDA, SOFR + 5%), $7M mezzanine (1x EBITDA, 12% cash + 1% PIK, 10-year warrants on 4% of equity at current valuation), $4M seller note. Annual mezzanine interest: $910K ($840K cash + $70K PIK). Mezzanine structure: 5-year term, interest-only years 1-3, principal amortization years 4-5. No cash pay amortization in early years helps manage cash flow. Warrants: if equity appreciates 3x during hold period, mezzanine lender's warrants worth additional $1.3M on exit — adds ~100 bps to all-in return. Exit math for sponsor: 3x money multiple on $18M equity = $54M value. Mezzanine lender gets $7M back plus accrued PIK plus warrant value. Senior lender gets $21M back at par.
Why It Matters & Common Pitfalls
- !Intercreditor complexity. Senior and mezz lenders negotiate intercreditor agreements governing enforcement, standstills, and payment priority. Complicated in workouts.
- !PIK economics. PIK interest compounds — a 2% PIK over 7 years adds meaningful principal. Factor into debt forecast.
- !Warrant dilution. Sponsor equity is diluted by warrants. Model carefully; warrants on 5% can reduce sponsor IRR by 100-200 bps.
- !Covenant interaction. Senior and mezz covenants may differ. Mezz typically has wider covenant cushion but can still trigger default.
- !Unitranche alternatives. For LMM deals, unitranche (one lender, combined senior/sub) is often simpler and competitive on economics.
- !Second lien distinguished. Some lenders offer "second lien" debt that's subordinated in collateral but pays cash interest without warrants. Different risk/return profile than traditional mezz.
- !SBIC mezzanine. Many LMM mezzanine providers are SBIC funds, which have government-backed leverage allowing lower-cost capital for borrowers.
Frequently Asked Questions
What is mezzanine financing?↓
What does mezzanine financing cost?↓
What's the difference between mezzanine and unitranche?↓
Related Terms
Senior Debt
The highest-priority debt in a capital structure — first to be repaid in default, typically secured by business assets, and carrying the lowest interest rate of any debt tranche due to its preferred position.
Unitranche Financing
Unitranche is a single-lender loan combining what would traditionally be senior and subordinated debt — streamlined structure common in LMM LBOs under $50M.
Leveraged Buyout (LBO)
An acquisition where a significant portion of the purchase price is financed with debt, typically secured by the acquired business's assets and cash flow — the foundational private equity deal structure.
PIK (Payment-in-Kind)
Interest or dividends that accrue and compound into the principal balance rather than being paid in cash — preserving early cash flow for the borrower while increasing the ultimate repayment amount at maturity.
Capital Structure
The combination of debt and equity financing used by a company — determining cost of capital, financial flexibility, and risk profile. In LBO M&A, capital structure optimization is the primary financial engineering lever: more debt reduces equity requirement (amplifying returns if the business performs) but increases operational risk and covenant constraints. Typical LMM LBO capital structure: 30-40% sponsor equity, 40-50% senior debt, 10-20% mezzanine/seller note.
Get Weekly M&A Insights
Valuation data, deal analysis, and plain-English M&A education — every week.
The LegacyVector Newsletter
Join 5,000+ business owners, investors, and buyers who get weekly M&A market data and deal insights.
- Weekly valuation multiples by industry
- SBA lending rates & deal financing data
- Market trends & acquisition opportunities
No spam. Unsubscribe anytime. Free forever.
Disclaimer: The information provided on this page is for educational and informational purposes only. It should not be considered financial, legal, or investment advice. Business valuations depend on many factors specific to each situation. Always consult with qualified professionals — including business brokers, CPAs, and M&A attorneys — before making acquisition or sale decisions. LegacyVector is not a licensed broker, financial advisor, or attorney. Data shown may be based on limited samples and may not reflect current market conditions.
LegacyVector Research Team
Reviewed by M&A professionals · Updated April 2026