How the Capital Stack Determines Who Wins and Who Waits in a Downturn

The capital stack is the order in which a deal pays out, and it is decided before the downturn ever arrives. In good years, every layer gets paid and the order looks academic. In a downturn, the order is everything. The capital stack ranks four positions from safest to riskiest: senior debt, mezzanine debt, preferred equity, and common equity. When cash flow falls, the stack does not distribute pain evenly. It distributes pain from the top down, wiping out common equity before the senior lender feels a dollar of loss. The thesis: your return in a bad year is not set by how the property performs. It is set by where you sit in the stack, and that seat was chosen at closing.

Key Takeaways

The capital stack has four standard layers, from lowest risk to highest: senior debt, mezzanine debt, preferred equity, and common equity. Priority runs top down for payment and bottom up for losses.
Common equity absorbs the first dollar of loss and can be wiped out entirely before preferred equity, mezzanine, or senior debt takes any impairment.
Property income pays in a fixed waterfall: operating expenses first, then senior debt service, then mezzanine and preferred returns, then whatever remains to common equity, which in a bad year is often nothing.
Higher position means lower risk and a capped return; lower position means higher risk and uncapped upside. The capital stack is the price of that trade, set at closing and unchangeable in a crisis.
With roughly $875 billion of commercial mortgages maturing in 2026 per the Mortgage Bankers Association, the difference between senior and common positions is about to be tested at scale.

What is the capital stack in commercial real estate?

The capital stack is the layered structure of debt and equity financing a commercial real estate deal, ordered by repayment priority. From safest to riskiest, the four layers are senior debt, mezzanine debt, preferred equity, and common equity. The order sets who gets paid first from cash flow and who absorbs losses first when the deal underperforms.

Each layer trades risk for return in a fixed relationship. Senior debt sits at the bottom of the stack and the front of the payment line, so it earns the lowest return and carries the least risk. Common equity sits at the top of the stack and the back of the payment line, so it earns the highest potential return and carries the most risk. The two middle layers, mezzanine debt and preferred equity, fill the gap between a senior loan and common equity when neither alone is enough.

Layer	Position	Risk	Typical return profile	Paid
Senior debt	Bottom	Lowest	Fixed interest, lowest rate	First
Mezzanine debt	Lower-middle	Moderate	~10-15% interest	Second
Preferred equity	Upper-middle	Higher	~12-18%, priority return	Third
Common equity	Top	Highest	Uncapped, residual	Last

Mezzanine debt is typically structured as a loan secured by a pledge of ownership interests, with the right to foreclose on that interest if payments fail. Preferred equity is an ownership position with priority distributions and negotiated control rights. Return ranges shown are representative market figures reported by subordinate-capital advisors including George Smith Partners and Lofotr; actual terms vary by deal. See the senior debt and preferred equity glossary entries for the full definitions.

How does the payment waterfall work when cash flow falls?

The payment waterfall is the fixed order in which property income is distributed. Income pays operating expenses first, then senior debt service, then mezzanine interest and preferred equity returns, and finally distributions to common equity. When cash flow falls, the shortfall hits the bottom of the waterfall first, so common equity stops getting paid long before any debt layer does.

The mechanic is unforgiving because it is sequential. Every layer must be fully satisfied before the next dollar flows to the layer above it. A property does not need to lose money for common equity to be starved; it only needs to earn less than the sum of its expenses and its senior obligations. The moment cash flow dips below that line, the residual layer, common equity, receives nothing, while the senior lender is still made whole.

Consider a property that normally generates $10 million of net operating income against $6 million of senior debt service and $2 million of combined mezzanine and preferred returns. In a normal year, common equity collects the $2 million residual. Now suppose a downturn cuts NOI to $7 million. Senior debt still takes its $6 million. Mezzanine and preferred split the remaining $1 million and come up $1 million short of their $2 million. Common equity receives zero. The asset lost 30 percent of its income; common equity lost 100 percent of its distribution. That asymmetry is the whole point of the stack.

The expert-voice line worth keeping: in a downturn the capital stack does not ask how the building performed, it asks where you stand in line, and the line was drawn at closing.

Who wins and who waits when a deal is underwater?

When a deal is underwater, the senior lender wins and the common equity waits, often for nothing. In a foreclosure or liquidation, recovery follows the same priority as payment: senior debt is repaid first, then mezzanine, then preferred equity, and common equity receives only whatever remains after all others are made whole, which in a distressed sale is frequently zero.

This is why the same 20 percent value decline produces completely different outcomes for different positions in the identical deal. Losses climb the stack from the top. The first losses vaporize common equity's cushion. If losses exceed that cushion, preferred equity begins to absorb them. Only if losses exceed all equity does the debt face principal impairment, and senior debt is the very last to be touched.

Value decline	Common equity	Preferred equity	Senior debt
10%	Partially impaired	Whole	Whole
25%	Wiped out	Partially impaired	Whole
50%	Wiped out	Wiped out	Partially impaired

A worked illustration: a $50 million property financed with $30 million senior debt, $10 million preferred equity, and $10 million common equity. A 25 percent decline drops value to $37.5 million. Senior debt's $30 million is fully covered. The remaining $7.5 million goes to preferred equity, which recovers 75 cents on the dollar. Common equity, which sat at the top, recovers nothing. The senior lender did not lose a dollar; the common investor lost everything. Neither outcome was about the building. Both were set by position.

This is the case for treating your seat in the stack as the primary risk decision, not an afterthought to the pro forma. A higher position sacrifices upside for the near-certainty of getting paid. Common equity buys uncapped upside with the risk of total loss. There is no free lunch in the stack, and the loan-to-value ratio only tells you how thick the equity cushion is, not who stands where above it. The refinance pressure from roughly $875 billion of 2026 maturities, per the Mortgage Bankers Association, will test these positions in deals underwritten when rates were half what they are now, a strain we covered in our analysis of over-underwriting cap rate compression.

Frequently Asked Questions

What is the safest position in the capital stack?

Senior debt is the safest position in the capital stack. It is repaid first from property cash flow and recovers first in a foreclosure or liquidation, so it is the last layer to absorb losses. In exchange for that safety, senior debt earns the lowest return of any position in the stack.

Why does common equity get wiped out first in a downturn?

Common equity gets wiped out first because it sits at the top of the capital stack and the back of the payment line. Every other layer must be paid before common equity receives a dollar, so when cash flow or value falls, the shortfall reaches common equity first. It absorbs the first losses in exchange for the highest potential upside.

What is the difference between mezzanine debt and preferred equity?

Mezzanine debt is a loan secured by a pledge of ownership interests, with the right to foreclose on that interest if payments fail. Preferred equity is an ownership position with priority distributions over common equity and negotiated control rights. Both fill the gap between senior debt and common equity, but mezzanine sits below preferred in repayment priority.

Conclusion

The capital stack is a decision about risk that gets made once, at closing, and cannot be renegotiated when the market turns. In a good year, every layer is paid and the order is invisible. In a downturn, the order is the only thing that matters. Senior debt is paid and common equity waits, because the waterfall distributes losses from the top down regardless of how the underlying asset performs. For the operator, the lesson is that the return you experience in a bad year was chosen before the deal ever went bad. The building's performance sets the size of the loss; the capital stack decides who bears it. Read your position first, because in a downturn the property is no longer the variable. Your seat in the stack is.