Financial Glossary
Net Operating Income (NOI) is a property or business's revenue from core operations minus all direct operating expenses, before deducting debt service (interest and principal payments), income taxes, depreciation, and amortization. In real estate, NOI equals effective gross income (potential rental income minus vacancy and collection losses plus ancillary income) minus operating expenses (property management, insurance, utilities, maintenance, property taxes). NOI is the primary valuation input for income-producing real estate: dividing NOI by the capitalization rate (cap rate) produces property value. In corporate finance, NOI is analogous to EBIT before depreciation when applied to operational divisions.
A campground property generates $500,000 in annual site rental revenue and $60,000 in store and activity income, totaling $560,000 in effective gross income. Operating expenses include property management fees of $56,000, insurance of $20,000, utilities of $30,000, routine maintenance of $25,000, and property tax of $18,000, totaling $149,000. NOI is $560,000 minus $149,000, or $411,000. If comparable campground properties in the region trade at a cap rate of 7%, the implied property value is $411,000 divided by 0.07, or approximately $5.87M. Improving NOI by $20,000, through either a rate increase or expense reduction, adds $286,000 of property value at the same cap rate ($20,000 divided by 0.07). This leverage effect is why NOI management, not just top-line revenue, is the central focus for real estate operators: every dollar of NOI improvement has a multiplied impact on property value.
NOI is an important profitability metric for assessing a company’s operational efficiency and core business performance.