The RANGEFINDER Capital Stack Field Guide

Few transactions are funded from a single source. A property acquisition, a business purchase, a development project — most are assembled from layers of capital, each with its own cost, its own priority in line for repayment, and its own expectations about control and return.

That assembly is the capital stack. Understanding it does not require a finance career. It requires knowing who sits where, and why.

The layers, from safest to riskiest

Senior debt sits at the top of the repayment line. It is typically secured by the asset, carries the lowest cost of capital in the stack, and gets paid first. In exchange for that safety, the lender expects covenants, reporting, and often personal or corporate guarantees.

Subordinate or mezzanine financing sits behind the senior loan. It fills the gap between what the senior lender will provide and what the sponsor can contribute. Because it is repaid only after the senior debt, it costs more — sometimes considerably more — and may come with rights that matter in a dispute.

Preferred equity behaves like a hybrid: it is ownership, but with a negotiated priority return ahead of the common owners. Preferred investors typically expect their return before the sponsor participates meaningfully in profits.

Common equity is the risk capital — the last dollars repaid and the first dollars lost. It also captures the upside after every other layer is satisfied. Sponsor equity is the sponsor's own common investment: the skin in the game that every other capital provider will ask about first.

Third-party equity from co-investors, and seller financing — where the seller accepts a note for part of the price — can slot into various positions depending on how they are structured. A seller note might be subordinate to a bank loan, effectively acting as a junior layer that helps the buyer's financing work.

Priority, cost, and control

Three ideas organize the whole stack. Repayment priority runs from senior debt down to common equity; in a shortfall, the bottom layers absorb losses first. Cost of capital runs in the opposite direction — the more risk a layer accepts, the more return it expects. And control rights are negotiated layer by layer: who can force decisions, who can block them, and what happens when the parties disagree. Intercreditor agreements — the contracts between lenders and other capital providers — define those rules before anyone needs them.

Guarantees deserve special attention. Recourse provisions can reach beyond the transaction to the sponsor's broader financial life. They are negotiable more often than borrowers assume, and they should be understood before signing, not discovered during a workout.

What each layer expects

Cost follows risk up and down the stack. Senior debt accepts the least risk and expects the least return — plus documents, covenants, and guarantees that give the lender confidence it will be repaid. Mezzanine capital expects a meaningfully higher return and often a voice in major decisions. Preferred equity expects its negotiated priority return before the common owners share in profits. Common equity accepts the possibility of loss in exchange for the upside that remains after everyone else is satisfied. Sponsors sometimes resent these expectations; experienced sponsors budget for them, because capital that is not fairly compensated for its risk has a way of becoming unavailable exactly when it is needed most.

A hypothetical stack

The figures below are invented for illustration — not terms available in any market. Imagine a $10,000,000 acquisition funded as follows:

Read top to bottom, the table is the repayment line. Read bottom to top, it is the line of who loses money first. The sponsor's 5% is small in dollars but large in meaning: it is the layer every other provider looks at when deciding whether the sponsor's incentives match their own.

Refinancing and exit

The stack is not permanent. Layers mature at different times, carry different prepayment terms, and respond differently to a sale or refinance. A structure that works at acquisition should also be examined for how it unwinds: what must be repaid to sell, what can be assumed by a buyer, and what penalties attach to early repayment.

The planning worksheet

The worksheet below lets you sketch a transaction's sources and uses — total cost, senior debt, additional debt, preferred and common equity, sponsor contribution, fees, and other costs — and checks that the two sides reconcile. It runs entirely in your browser; nothing is transmitted or stored. It does not calculate investment returns, because returns require cash-flow and distribution assumptions a simple worksheet cannot responsibly guess.

The RANGEFINDER Perspective

The right capital structure is not simply the one with the most leverage. It is the one that fits the transaction's objectives, risks, and obligations — including the ones that only appear when something goes wrong.

Sketching a structure for a real transaction? Discuss Your Capital Structure with our Capital Markets team.