What Is Mezzanine Financing?
Mezzanine financing is a form of junior capital that fills the gap between what senior lenders will provide and what equity investors want to contribute. It ranks below senior debt but above common equity in the repayment waterfall, which is why it is named after the mezzanine level of a building.
Because mezzanine lenders are repaid only after senior creditors, they demand higher returns, typically 12% to 20% all-in. That return usually combines cash interest, paid-in-kind (PIK) interest that accrues to the loan balance, and sometimes equity warrants.
How It Works
Mezzanine debt is most common in leveraged buyouts and other acquisitions where the sponsor wants to stretch total leverage. A typical structure might be a 10% cash coupon plus 3% PIK interest, with warrants for 2% of the company's equity. The loan is usually unsecured or second lien, has few or no amortization payments, and matures after the senior debt.
For the borrower, mezzanine is more expensive than bank debt but cheaper than giving up more equity. For the sponsor, adding a mezzanine tranche reduces the equity check, which can boost equity returns if the deal performs.
Example
Consider a $500 million buyout funded with $250 million of senior debt at 8%, $75 million of mezzanine at 13%, and $175 million of sponsor equity. Without the mezzanine tranche, the sponsor would need $250 million of equity. If the company is later sold at a value that returns $500 million to equity holders, the smaller $175 million equity base earns roughly a 2.9x multiple versus 2.0x on a $250 million base, illustrating how mezzanine amplifies equity returns.
The trade-off is risk: the extra $75 million of fixed obligations raises the chance of distress if EBITDA declines.
Why It Matters
Mezzanine sits at the heart of capital structure decisions, showing how companies and sponsors balance cost of capital against risk and dilution. Dedicated mezzanine funds and private credit firms compete to provide this layer, and it remains a meaningful career path within private markets.
In LBO modeling tests and interviews, you may be asked to layer a mezzanine tranche with PIK interest into a debt schedule, so understanding how PIK accrues to principal is a frequent technical checkpoint.
