Private Credit vs Mezzanine Finance

Unitranche private credit has gained significant market share from the traditional senior plus mezzanine structure over the past decade, and for good reason. The product delivers genuine advantages in speed, simplicity, and execution certainty that resonate strongly with PE sponsors and corporate borrowers managing complex transactions under time pressure.

Speed and simplicity are paramount. The single largest advantage of unitranche over a layered senior/mezzanine structure is the elimination of intercreditor complexity. In a traditional two-tranche structure, the borrower and its counsel must negotiate not only two separate facility agreements but also an intercreditor agreement that governs every aspect of the relationship between the senior and mezzanine lenders. This intercreditor negotiation routinely adds 3-5 weeks to the documentation process and generates significant legal costs, as each lender`s counsel advocates for provisions that protect their client`s position - often at the expense of the other tranche. The unitranche eliminates this entirely. A single facility agreement with a single lender means a single set of negotiations, a single credit approval, and a single closing process. For a sponsor bidding in a competitive auction with a 4-6 week exclusivity window, this time saving can be the difference between closing and losing the deal.

Avoiding intercreditor disputes during the life of the loan. The intercreditor agreement is not merely a closing document - it governs the ongoing relationship between lenders for the entire tenor of the facility. Disputes between senior and mezzanine lenders over enforcement rights, information sharing, consent requirements, and payment waterfall mechanics are a well-documented risk in layered capital structures. When a borrower faces financial stress, the divergent economic incentives of senior and mezzanine lenders can lead to protracted disputes that delay resolution and increase costs for all parties. Senior lenders may favour conservative enforcement to protect their first-loss position, while mezzanine lenders may push for forbearance to preserve their subordinated recovery. A unitranche structure eliminates this dynamic entirely: a single lender makes a single decision based on a holistic view of the credit, leading to faster and more commercially rational outcomes.

Sponsors seeking certainty on total cost of capital. With a unitranche, the sponsor knows the all-in cost of debt from the moment the term sheet is signed. There is no uncertainty about the mezzanine pricing, no risk that the mezzanine provider will attempt to renegotiate terms during documentation, and no potential for the blended cost to shift as the relative sizing of senior and mezzanine tranches changes during the structuring process. For LBO models where the debt cost assumption directly impacts the sponsor`s return calculations, this certainty is valuable. In a senior/mezzanine structure, the blended cost can move materially if the senior lender reduces its leverage commitment (pushing more volume into the higher-cost mezzanine tranche) or if the mezzanine provider demands additional compensation through warrant coverage or fee adjustments.

Borrowers who anticipate needing amendments during the facility`s life. Any business undergoing growth, executing an acquisition strategy, or operating in a dynamic market will likely need to amend its debt documentation during the facility`s tenor. Add-on acquisitions require debt capacity increases, operational changes may necessitate covenant adjustments, and strategic pivots often need basket amendments. In a unitranche, these amendments require agreement from a single lender. In a senior/mezzanine structure, many amendments require consent from both tranches, with the mezzanine lender holding effective veto rights over changes to shared provisions. The cost and time involved in dual-lender amendments can be significant, particularly if the two lenders have different views on the credit trajectory.

The distinction between unitranche private credit and traditional mezzanine has blurred as direct lenders and mezzanine funds have developed products that combine elements of both. These hybrid structures reflect the market`s recognition that no single product optimally serves every transaction profile.

First-out / last-out unitranche structures. Many unitranche facilities are internally tranched into a first-out (senior priority) and last-out (junior priority) component, even though the borrower sees a single facility with a single margin. The direct lender originates the full unitranche and then sells the first-out strip to a bank, insurance company, or lower-cost capital provider at a reduced margin, retaining the last-out strip at a higher effective return. This internal tranching reduces the direct lender`s capital at risk and improves its returns on the last-out portion, while the borrower experiences a single-lender relationship with unitranche simplicity. The first-out / last-out split is governed by an agreement among lenders (AAL) that sits behind the facility agreement and is typically not visible to the borrower. This structure has become the dominant architecture within the European unitranche market, with 60-70% of unitranche facilities incorporating some form of internal tranching.

Unitranche with bolt-on mezzanine or holdco PIK. For transactions requiring leverage beyond the unitranche ceiling, the same or a different direct lender can provide a holdco PIK instrument that sits structurally beneath the unitranche in the capital structure. This effectively replicates the senior/mezzanine economics within a private credit framework, with the unitranche serving as the senior component and the holdco PIK as the subordinated layer. The borrower maintains direct lending execution benefits (speed, single-lender focus, documentation simplicity) while accessing total leverage of 6.5x-8.0x. Intercreditor mechanics between the unitranche and holdco PIK are typically simpler than traditional senior/mezzanine intercreditors because both instruments are often held by funds managed by the same or affiliated direct lending platforms.

Stapled mezzanine alongside committed unitranche. In competitive auction processes, some advisers structure financing packages that offer bidders a choice between a unitranche and a senior/mezzanine alternative from the same provider group. The bidder can select the structure that best fits their return model and operating preferences. This approach eliminates execution risk for the bidder while providing optionality on capital structure architecture. The stapled financing package is pre-negotiated with the lending group, allowing the bidder to focus on the commercial aspects of the transaction rather than spending competitive auction time on financing negotiations.

Mezzanine refinancing into unitranche. A common lifecycle event involves a borrower that initially financed through a senior/mezzanine structure subsequently refinancing into a unitranche as the business deleverages. As EBITDA grows and leverage falls from, say, 6.0x to 4.5x, the total leverage level moves into comfortable unitranche territory, allowing the borrower to consolidate two tranches into a single facility at a blended rate that may be comparable to or lower than the previous layered cost. This refinancing simplifies the capital structure, eliminates the intercreditor agreement, and reduces ongoing administrative complexity. The mezzanine call protection schedule becomes a key consideration in timing this transition.