NOI Calculator for Single Property
A simplified NOI calculator for a single multifamily property. Enter unit count, average rent, and total expenses to see annual NOI, margin, and per-unit performance.
Property Details
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Typical multifamily vacancy: 3-7%
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Parking, laundry, pet fees, etc.
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$
Include taxes, insurance, maintenance, management, utilities, and other operating costs
Annual Results
Enter property details to calculate NOI
This calculator shows one property.
Cai shows your entire portfolio.
BubbleGum BI calculates NOI across every property — with daily-updated financials from your PMS, variance analysis, and AI diagnostics.
Schedule a DemoFrequently Asked Questions
How do I calculate NOI for one apartment building?
NOI = Effective Gross Income - Operating Expenses. Start with gross potential rent, subtract vacancy loss, add other income, then subtract all operating expenses. Do not include mortgage payments or capital expenditures.
What is a good NOI margin for multifamily?
Stabilized multifamily properties typically have NOI margins of 40-55%. Well-managed Class A properties can reach 55-70%. Margins below 40% suggest room for expense optimization.
What is the difference between NOI and cash flow?
NOI excludes debt service, CapEx, and income taxes. Cash flow is what remains after paying the mortgage. NOI is used for valuation and underwriting.
Should I use monthly or annual figures?
NOI is typically expressed annually. This calculator accepts monthly inputs and annualizes automatically.