A/B Notes, Pari Passu, and Note-On-Note Leverage: When “More Proceeds” Quietly Means Less Control

The Proceeds Illusion

When a sponsor needs more capital at closing, the instinct is simple: add another debt tranche. Pari passu notes, A/B splits, and note-on-note structures all promise the same bargain: more money today in exchange for a cleaner capital stack. The math is seductive. A sponsor with a 70 percent loan-to-value first mortgage can layer a 15 percent pari passu second, and suddenly the equity gap shrinks. But proceeds are not capital, and capital is not control. Each structural choice is a quiet negotiation in which the sponsor trades away governance for liquidity, often without recognizing the full price until the deal transitions to stress.

The capital markets understand this trade implicitly. What looks like efficiency at closing becomes fragility at workout. Lenders stack priority, remove flexibility, and create decision paralysis precisely because they know that more leverage requires more control to manage.

A/B Notes and the Illusion of Clean Subordination

A/B note structures split a single debt facility into senior (A) and subordinated (B) tranches, typically issued by the same lender or a lender syndicate. The A note holds first priority; the B note sits in second position and absorbs losses first. On paper, this is subordination. In practice, A/B splits compress the sponsor's operating window by locking both tranches into identical financial covenants, cash flow sweeps, and trigger events.

Here is the mechanics: Both notes share the same loan agreement. Both contain identical coverage ratio tests, leverage thresholds, and material adverse effect language. When leverage tightens in a stabilized deal, the A note lender does not relax the covenant; instead, both tranches tighten simultaneously. The B note holder, sitting in second loss position, has no incentive to negotiate relief because any covenant waiver benefits the A note holder first. This creates a two-on-one negotiating dynamic in which the sponsor faces unified lender opposition to any modification.

The cash flow waterfall compounds the problem. A/B structures typically require cash sweep triggers tied to leverage or interest coverage ratios. Once triggered, excess cash flows to debt service on both notes before reaching equity. Because the B note is subordinated, it receives interest payments only after the A note is fully current. But the sweep trigger itself applies to both tranches equally. In a stabilized property generating stable cash flow, this is manageable. In a transitional deal with variable cash flows, the sweep trigger can fire intermittently, starving equity of capital for tenant improvements, lease renewal incentives, or working capital while both lenders collect current interest. The sponsor has provided more capital (the B note proceeds) but surrendered the flexibility to allocate cash to highest-and-best use.

Pari Passu Notes and the Consensus Problem

Pari passu debt ranks equally with first-mortgage debt. Both notes hold the same priority in the waterfall, share the same collateral pool, and receive pro-rata recovery in a liquidation. This structure appeals to sponsors because it appears to avoid true subordination; the second lender is not taking a loss position, merely standing beside the first lender in line.

But parity creates a different trap: decision paralysis. In a workout scenario, a first-mortgage lender and a pari passu second lender must agree on material actions. A restructuring proposal requires unanimous consent. A refinance or payoff requires consent from both. A lease renewal, tenant buyout, or capital expenditure that affects recovery requires sign-off from both notes. Each lender now has veto power, and each lender has an incentive to protect its own recovery at the expense of the other. The first lender wants a quick liquidation to lock in recovery; the pari passu lender prefers to extend and modify, hoping for a turnaround. Neither will move without protecting its position.

This consensus requirement is not a governance feature; it is a hidden cost. In a stabilized property, both lenders have aligned interests in steady cash flow and on-time payment. But the moment stress arrives, the alignment breaks. A pari passu structure that seemed efficient at closing becomes a bottleneck in a workout because every decision requires negotiation among equals with divergent recovery incentives.

Note-on-Note Leverage and the Extension Premium

Note-on-note structures are the most aggressive form of layered debt. A sponsor secures a senior note from Lender A, then uses that note as collateral to borrow from Lender B. The second lender holds a pledge on the senior note itself, not on the underlying real estate. This creates a pure financial leverage position: Lender B is lending against Lender A's note, not against property value.

The appeal is obvious: proceeds without additional real estate encumbrance. The senior note remains unencumbered by Lender B's claim. The underlying property is not further pledged. But the structure is financial engineering, and financial engineering always extracts a price.

Note-on-note leverage embeds what is known as extension risk. If the sponsor cannot service both notes, Lender B has no claim on the property; Lender B can only pursue remedies against Lender A. Lender A, facing default by the sponsor, must decide whether to cure Lender B's claim or let Lender B foreclose on the senior note. If Lender A is unwilling to cure, Lender B forecloses and becomes the owner of the senior note, with all its rights and remedies against the sponsor. This means Lender B can accelerate the senior note, force a refinance, or demand an asset sale. The sponsor has lost not only the ability to service debt but also the ability to control the timing and structure of a workout.

In a rising-rate environment, note-on-note leverage becomes especially treacherous. The senior note carries a fixed or floating rate tied to market conditions at origination. If rates rise and the property's cash flow does not, the sponsor faces a growing debt service gap. The second lender, watching the gap widen, has no incentive to forbear; Lender B's only recovery comes from the senior note. Lender B will enforce its remedies aggressively, which means accelerating the senior note and forcing a refinance or sale. The sponsor has added leverage but surrendered the ability to extend or modify the senior note without Lender B's consent.

The Hidden Cost: Loss of Modification Rights

All three structures share a common hidden cost: the loss of unilateral modification rights. In a traditional first-mortgage structure, the sponsor and lender negotiate modifications through direct discussion. The lender may require a higher rate, additional reserves, or tightened covenants, but the negotiation is bilateral. The sponsor retains agency.

In A/B, pari passu, and note-on-note structures, the sponsor faces a fragmented lender base, each with different loss positions and different incentives. A/B notes require negotiation with two tranches of the same lender (which should be simpler but is often more rigid). Pari passu notes require consent from two independent lenders with no subordination hierarchy to break ties. Note-on-note leverage requires negotiation with Lender B, who has no direct relationship with the property and no incentive to accommodate a modification that does not increase recovery on the senior note.

The result is a silent transfer of control from the sponsor to the lender base. The sponsor has more proceeds but fewer levers. Flexibility is exchanged for capital, and the exchange rate is revealed only when modification becomes necessary.

When Proceeds Become Liabilities

A/B, pari passu, and note-on-note structures are not inherently bad. In a stabilized, cash-flowing property with low stress probability, they are rational ways to increase leverage and reduce sponsor equity exposure. But they are contingent structures; their cost is paid in the state of the world in which the deal transitions to stress. In that state, the sponsor has purchased proceeds at the price of control.

The capital markets price this trade implicitly. A lender willing to provide pari passu or note-on-note proceeds demands a higher rate or tighter covenant package to compensate for the complexity of the workout. The sponsor sees the higher rate and attributes it to market conditions. But the rate premium is actually the market's price for the loss of modification rights and the embedded extension risk that the structure creates.

Smart sponsors understand this calculus. They ask not "How much proceeds can I raise?" but "How much control am I willing to surrender, and at what price?" The answer determines whether a layered structure is capital-efficient or a trap disguised as liquidity.

What I'm watching next

• How sponsors refinancing maturing A/B and pari passu structures negotiate lender consent for extension pricing, and whether lenders demand covenant tightening in exchange for refinance flexibility.
• Whether note-on-note structures in transitional deals show higher default rates than comparable single-note structures, and how second lenders model extension risk in underwriting.
• How intercreditor agreements between pari passu lenders allocate decision rights in a workout, and whether consensus requirements create delays that materially worsen recovery outcomes.