Structured & alternative-income investments
Mezzanine Debt
A subordinated loan sitting between the senior lender and the equity, priced high because it is repaid last and usually secured by a pledge of ownership interests rather than the asset itself.
Mezzanine debt is the layer of borrowing that ranks behind the senior loan and ahead of the equity, compensated with a high coupon, fees and often warrants. In real estate it is typically made to the parent of the property-owning entity and secured by a pledge of that entity's ownership interests, so enforcement runs through a UCC foreclosure rather than a mortgage foreclosure. Individual investors usually reach it through private funds, BDCs or syndicated offerings, and part of the interest is often paid in kind rather than in cash.
Interest from lending Truly passive
The labels above place this income type before you read a word. The first is the mechanism — how the money actually reaches you, whether by lending it out, owning a slice of something, renting an asset, licensing a right, selling an option or owning a business somebody else runs. The second says whether the income keeps arriving on its own once it is running, or whether it needs work from you to keep coming. Both are descriptions of how the thing is built, not verdicts on it.
How it works
A mezzanine loan is typically made not to the property or business itself but to the parent entity that owns it, and it is secured by a pledge of the equity interests in that borrower rather than by a mortgage or a first lien on hard assets. That distinction has a practical purpose. Enforcement runs through a UCC Article 9 foreclosure on the pledged interests, which can be completed in weeks, rather than a judicial mortgage foreclosure that can drag on for a year or more. An intercreditor agreement with the senior lender governs everything that matters in a downturn: standstill periods, notice and cure rights, the right to buy the senior loan at par, and what the mezzanine lender may actually do after a default.
Interest is usually split between cash pay and payment in kind, with the PIK portion accruing to principal and settling only at maturity. Corporate mezzanine typically adds an equity kicker, warrants, a success fee, or a small stake, which is where return above the coupon is meant to come from. The same layer goes by different names depending on the market: second-lien or subordinated debt in corporate finance, a mezzanine loan behind the mortgage in real estate, or the junior tranche of a unitranche facility among lenders.
Individual investors generally reach this layer through private credit funds, business development companies, or syndicated offerings rather than by originating a loan directly. Whichever route is used, covenants, reporting requirements and cash sweeps are negotiated into the credit agreement, and the quality of that drafting is largely what determines whether a lender sees trouble early enough to act on it.
What it pays
Mezzanine income is quoted as a coupon split between a cash rate and a PIK rate, plus upfront fees such as an origination point and often original issue discount built into the loan itself. The rate is set by where the loan attaches in the capital structure, the leverage multiple measured through the mezzanine tranche, the durability of the borrower's cash flow, and the term. Call protection matters as much as the headline coupon: a no-call period, a prepayment penalty, or a yield maintenance provision protects the lender's return if the borrower refinances sooner than expected.
Warrants and success fees can make up a large share of realised return in corporate deals, and nothing at all if the business simply stagnates without a liquidity event. PIK interest inflates the stated yield without producing any cash, so a fund carrying heavy PIK exposure can report income it has not collected and cannot distribute to its own investors.
None of this spread over senior debt exists for any reason other than compensation for standing to be wiped out first. Fund investors receive this coupon net of a management fee and an incentive fee over a hurdle, which can absorb a substantial fraction of the spread the underlying loans are actually earning.
Costs and taxes
Fund access layers on a management fee and an incentive fee over a hurdle; direct positions instead carry legal costs for drafting the credit agreement, the pledge documents, and the intercreditor negotiation with the senior lender. Interest income is ordinary income for US federal tax purposes and is taxed at marginal rates, not at the lower rates applied to qualified dividends.
PIK interest and original issue discount are taxable as they accrue, meaning a holder can owe tax for years on income that has never actually been received in cash. Where a loan is issued with warrants attached, the purchase price is allocated between the debt and the warrant, which can create original issue discount on the debt piece even when the loan was funded at face value.
Partnership fund vehicles issue Schedule K-1s that can generate multi-state filing obligations, while BDCs and other registered funds issue simpler 1099s. Inside a self-directed IRA, a leveraged fund can throw off unrelated business taxable income or unrelated debt-financed income. A workout that converts debt into equity changes the tax character of everything that follows and may trigger cancellation-of-indebtedness consequences at the borrower level.
Liquidity and time commitment
Individual mezzanine loans do not trade. Repayment arrives at maturity, on a refinancing, or on a sale of the underlying collateral, and there is no secondary market to exit before then. Fund vehicles carry the usual private-fund terms instead: multi-year closed-end structures with capital calls, or evergreen vehicles with capped periodic repurchase windows.
Terms commonly run a few years, matched to the senior loan's maturity or to the borrower's business plan, so the investor's exit depends on someone else's plan working out. Effort is low for a fund investor and high for a direct lender, who has to monitor covenants, review financial reporting, and track what the senior lender is doing at the same time.
Private offerings of this kind are generally limited to accredited investors, with qualification tested in the subscription documents. When a credit starts to deteriorate, the time commitment changes character entirely, because cure decisions, standstill deadlines, and intercreditor mechanics all run on short, contractually fixed clocks.
How it goes wrong
If the borrower defaults, the senior lender is paid first out of whatever the collateral produces, and mezzanine recovery is whatever is left over, which in a distressed sale is frequently nothing. The intercreditor agreement often binds harder than expected: a standstill provision can prevent the mezzanine lender from acting for months while the value of the collateral erodes underneath it.
Protecting the position can require spending more money, not less. Curing a senior default or buying out the senior loan means writing another cheque, and the option to defend the position is not free. PIK accruals can mask deterioration for a long stretch, because the loan keeps reporting income on paper even as the borrower stops paying cash and conserves liquidity elsewhere.
Maturity eventually arrives, and the refinancing assumed at underwriting is not available at the value assumed, which is the standard failure pattern when capitalization rates or credit spreads move against the borrower. Equity kickers expire worthless far more often than they pay off, and the coupon alone rarely compensates for a total loss of principal. In real estate specifically, a UCC foreclosure hands the mezzanine lender the equity of an entity that still owes the full senior mortgage, so taking control also means taking on that debt.
What to remember
- Mezzanine debt sits between senior debt and equity, secured by a pledge of ownership interests rather than the underlying asset, and is enforced through a faster UCC foreclosure instead of a mortgage foreclosure.
- Return comes as a cash coupon, a PIK component that accrues without paying cash, fees, and sometimes warrants, all compensating for being repaid last.
- PIK interest and original issue discount are taxed as ordinary income when they accrue, not when cash is actually received.
- There is no secondary market for individual loans; liquidity depends on maturity, refinancing, or a fund's own redemption terms.
- An intercreditor agreement, not the mezzanine lender's own judgment, largely controls what can be done after a default.
- Loss is binary in a downturn: full recovery if the senior loan is covered, and often total loss of principal if it is not.
This page explains how the income type works, which does not change from week to week, so it deliberately carries no rate and no price. The links below go to the pages that hold the current figures for it, each one stamped with the date the data was pulled. Read the mechanism here first: the numbers there are far easier to judge once you know what they are measuring.
See the live numbers: Private Credit, Commercial Real Estate.
Frequently asked
Why is mezzanine debt secured by ownership interests instead of the property?
What is an intercreditor agreement and why does it matter so much?
Is mezzanine debt the same as second-lien debt?
What does payment-in-kind interest do to my tax bill?
Written for information only. Nothing here is investment, tax or legal advice, and no page on this site recommends buying or selling anything. Rules and tax treatment change; verify anything that matters with a professional who knows your situation. This explainer was drafted by a language model (claude-sonnet-5) from an editor-approved outline and fact sheet, under the rules set out in our editorial policy, and carries no market figures. Last updated Jul 29, 2026.