Glossary

Net Operating Income

Net Operating Income (NOI) is a calculation used to analyze the profitability of income-generating real estate. It represents the total revenue generated by a property minus all necessary operating expenses. NOI excludes mortgage payments, capital expenditures, depreciation, and income taxes, providing a clear view of a property's operational efficiency.

NOI serves as the primary metric for investors and lenders to evaluate the financial health of a commercial or residential asset independent of its financing structure. By isolating operational performance from debt service, stakeholders can compare properties with different leverage profiles on an equal footing. It is a critical component in determining a property's capitalization rate and is frequently used by appraisers and buyers to estimate market value, making it essential for informed acquisition, divestment, and portfolio management decisions.

To calculate NOI, subtract operating expenses—such as property management fees, insurance, utilities, maintenance, and property taxes—from the property's effective gross income. Investors should remain vigilant regarding the inclusion of non-operating costs; for instance, mortgage principal and interest payments must be excluded to maintain an accurate operational baseline. Consistent tracking of these figures allows owners to identify trends in vacancy rates or rising maintenance costs, enabling proactive adjustments to rental strategies or operational workflows to maximize long-term asset yield.

Last updated: 2026-09-17