Net Operating Income
Rental income minus operating expenses.
Formula
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Example
GI=$40k, OE=$14k: NOI = $26k
How it works
Net Operating Income (NOI) shows how much money a property produces from its day-to-day operations after normal operating costs are paid. It is found by subtracting operating expenses from gross income because the result isolates the property’s operating performance before financing costs, taxes, and depreciation are considered. That makes it a useful measure of a property’s earning power on its own.
When to use it
Use NOI when evaluating rental properties, comparing investment properties, or estimating how well a building is performing financially. It is especially helpful in real estate analysis before deciding on a purchase, refinance, or sale.
Worked example, step by step
Given: GI = $72,000 and OE = $29,500 Step 1: Write the formula: NOI = GI - OE Step 2: Substitute the values: NOI = $72,000 - $29,500 Step 3: Subtract: NOI = $42,500 Final answer: NOI = $42,500
Common mistakes to avoid
- Including mortgage payments in operating expenses
- Using net income instead of gross income in the formula
- Forgetting to subtract expenses such as maintenance, insurance, and management costs
Did You Know?
NOI excludes mortgage payments and tax so properties can be compared regardless of how they're financed.
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