Leverage in commercial real estate is positive when borrowing amplifies equity returns above the unlevered property return, and negative when borrowing reduces equity returns below what an all-cash purchase would produce. The crossover point is determined by the relationship between two numbers: the going-in cap rate, which measures what the property earns unlevered as a percentage of purchase price, and the debt constant, which measures the annual cost of carrying the debt as a percentage of the loan balance. When the cap rate exceeds the debt constant, debt is cheap relative to what the property earns and leverage amplifies equity returns. When the debt constant exceeds the cap rate, debt is expensive relative to what the property earns and leverage destroys equity returns.
The arithmetic is straightforward. A property acquired at a 7.0% cap rate financed with a loan carrying a 5.5% debt constant (interest plus amortization) earns 150 basis points more on the property than the cost of the debt, and the excess flows to equity, magnifying the equity return above 7.0%. The same property financed at a 9.0% debt constant costs 200 basis points more in debt service than the property earns, and the shortfall is funded from equity, reducing the equity return below 7.0%. The magnitude of the leverage effect depends on the loan-to-value ratio — higher leverage amplifies positive leverage more and negative leverage more. At 65% LTV, a modest positive or negative leverage position has a moderate effect on equity return; at 80% LTV, the same spread produces a much larger distortion.
In the rising interest rate environment of 2022-2024, many commercial real estate transactions moved into negative leverage territory for the first time in over a decade. Cap rates, which adjust more slowly than debt markets because they are driven by long-term income expectations and appraisal-based valuations, did not rise immediately to match the rapid increase in financing costs. The result was a period where a buyer financing a property at a 5.5% cap rate with a loan at a 7.0% all-in debt constant was effectively paying more for the debt than the property earned — accepting negative current-period leverage on the bet that income growth, cap rate compression on exit, or both would produce adequate total returns despite the negative carry.
Negative leverage is not automatically irrational, but it requires an explicit appreciation thesis to justify. If a property is purchased at a 5.5% cap with negative leverage because the business plan assumes 3% annual NOI growth and a 5.0% exit cap in five years, the total return math may work — the income growth and cap rate improvement produce equity appreciation that more than offsets the negative leverage carry. What makes negative leverage dangerous is when the appreciation assumption is implicit rather than explicit: when a buyer accepts negative carry without stress-testing what happens if NOI growth is 0% and cap rates expand to 6.0% by exit. In that scenario, the negative leverage compounds with an adverse exit into a significant loss. Lenders embed the same logic in DSCR covenants — a minimum DSCR of 1.20x at origination ensures the property covers debt service with meaningful cushion, which corresponds roughly to operating in positive leverage territory at the tested loan basis.
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