Mezzanine Financing
Also known as Mezzanine Debt, Mezz, Subordinated Debt with Equity Kicker, Pre-IPO Mezzanine
Mezzanine financing is subordinated debt paired with equity kickers, typically warrants, that sits between senior debt and equity in the capital stack. It is used late in a private company's life or in leveraged buyouts, with all-in yields commonly 12-20% combining cash interest, PIK interest, and warrant upside.
In depth
Mezzanine sits in the gap between what a senior lender will lend and the company's equity base. The structure is almost always subordinated debt: a loan that ranks below senior credit facilities in the waterfall, but ahead of every class of equity. To compensate for the risk of standing behind the senior lender, the mezzanine note carries a cash coupon (commonly 10-12%), often a PIK coupon on top (2-4%), and a warrant package that gives the lender equity upside.
The instrument shows up in two main contexts. In leveraged buyouts, mezzanine fills the gap between senior LBO financing and sponsor equity, letting the sponsor lever more without writing a larger equity check. In late-stage venture, mezzanine funds the last private mile before an IPO or acquisition, where the company has visible cash flow and prefers warrant dilution to issuing another preferred series at the cap table cost it would imply.
PIK interest is the defining feature. The lender lets the borrower defer cash interest by adding it to principal, which compounds, then collects everything at maturity or refinancing. That structure aligns the lender's payday with the borrower's expected liquidity event.
Why it matters
Mezzanine prices the gap that senior lenders refuse to cover. A senior lender capped at 3x EBITDA leaves the next 1-2x EBITDA unfunded unless equity covers it. Mezzanine fills that slot at 14-20% all-in, which is expensive relative to senior debt but cheap relative to issuing dilutive equity at a high private valuation. For LBO sponsors and late-stage founders, the trade-off is rational when the cost of equity is higher than the cost of mezzanine.
The downside is rigid. Mezzanine notes carry tight covenants, change-of-control puts, and warrant packages that can produce surprising dilution if exercised at an unexpected price. Companies that miss earnings expectations after taking mezzanine often find themselves negotiating with junior lenders who have leverage senior lenders never had.
Worked example
A pre-IPO software company with $40M EBITDA needs $50M to fund an acquisition without issuing new equity. Senior lenders cap at 4x EBITDA. The structure:
| Tranche | Size | Coupon | Notes |
|---|---|---|---|
| Senior secured term loan | $160M | SOFR + 4% (~8%) | 4x EBITDA, 5-year |
| Mezzanine note | $50M | 11% cash + 3% PIK | 5-year, 1% warrant coverage |
| Existing equity | Pre-acquisition |
Mezzanine all-in cost = 11% cash + 3% PIK + warrant value
Year 5 PIK accretion = $50M * (1.03^5 - 1) ≈ $8M added to principal
Maturity balance = $58M
Warrants on 1% of FD shares at $50M post-money strike → upside at IPO
The mezzanine lender earns roughly 15-17% IRR assuming a successful IPO that brings the warrants in the money. The company avoided pricing a final private round at a discount to its target IPO valuation.
Frequently asked
How does mezzanine financing differ from venture debt?
Venture debt is senior secured and underwritten on the borrower's ability to raise the next equity round. Mezzanine is subordinated, unsecured or junior-secured, and underwritten on cash flow. Venture debt suits early- to growth-stage VC-backed companies. Mezzanine suits late-stage or LBO-grade businesses with predictable EBITDA.
What returns do mezzanine lenders target?
Mezzanine lenders commonly target blended yields of 14-20%. The blend comes from cash interest, PIK interest that compounds into principal, and warrant or co-investment upside that delivers most of the equity-like return. Senior debt yields are far lower because senior lenders rank first on collateral.
When does a startup take mezzanine instead of equity?
Pre-IPO companies use mezzanine to bridge to the listing without diluting on a final private round. Profitable growth-stage companies use it to fund acquisitions or recapitalizations when an equity raise would be expensive. Mezzanine fits when the company can service interest and the founders prefer warrant dilution to share issuance.
What is PIK interest in a mezzanine note?
Payment-in-kind interest accrues to the loan principal rather than being paid in cash. The borrower preserves cash, the lender compounds principal, and the eventual repayment is larger. PIK is standard in mezzanine because it matches the lender's higher risk to the borrower's later cash flow.