Unitranche
A unitranche is a single debt facility that blends what would traditionally be separate senior and subordinated tranches into one loan, with one blended interest rate and one set of documents. Behind the scenes lenders may split the economics into first-out and last-out pieces, but the borrower sees a single facility from a single counterparty. It is a defining structure of private credit and direct lending.
One Facility Instead of a Stack
A unitranche collapses a traditional two-part debt structure into one. Instead of arranging a senior loan and a separate subordinated or mezzanine piece, each with its own lender, rate, and documents, a unitranche is a single loan at a single blended rate under one credit agreement. The borrower deals with one counterparty and one set of terms, which is why the structure became a hallmark of private credit and direct lending.
How the Blended Rate Works
A unitranche rate sits between what senior debt and mezzanine would each cost on their own: higher than a senior-only loan, because the single facility carries risk that would otherwise be split off into a junior tranche, but structured as one number rather than two. For the borrower, that means a simpler, faster financing with one rate to underwrite against, instead of layering and negotiating two separate facilities.
First-Out and Last-Out
Although the borrower sees one loan, the lenders behind it often divide the economics privately. Through an agreement among lenders (AAL), the facility is split into a first-out tranche, which is paid first and behaves like senior debt, and a last-out tranche, which is paid after and earns a higher return like a junior piece. This lets different lenders take the risk and return they want while the borrower still faces a single, unified facility. The split is invisible on the borrower's side unless a default puts the AAL into effect.
Why It Grew With Private Credit
Unitranche financing rose alongside private credit because funds can hold an entire facility on their own balance sheet, rather than syndicating pieces to banks and mezzanine investors. Borrowers, especially in sponsor-backed buyouts, get speed, certainty, and a single relationship, which can matter more than shaving basis points off the rate. The result is a large, negotiated loan that a direct lender underwrites, funds, and services largely on its own.
How Zolvo Fits
A unitranche is a bespoke, long-dated position that a fund services itself, with the same demands as other private debt: applying and reconciling payments, tracking any first-out and last-out economics, testing covenants, and reporting to limited partners. Zolvo automates that servicing layer on top of the systems a lender already runs, including LP and investor reporting, so a fund can service a growing private-credit book without growing the back office to match.
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