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NOI Calculator
Work out net operating income — what a property earns after vacancy and running costs, before any loan. Enter the rent and itemize the operating expenses; you'll get annual and monthly NOI and the operating-expense ratio.
Income
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Annual operating expenses
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Net operating income—
Effective gross income—
Total operating expenses—
Operating expense ratio—
NOI per month—
How it's calculated
Rent and other income, less the vacancy allowance, give effective gross income. Management is taken as a percentage of that income; the fixed expenses are added; and the total is subtracted to give NOI. Loan EMIs are deliberately excluded — those belong in cash flow, not NOI.
NOI = effective gross income − operating expenses (excluding any loan). Feed it into the cap rate calculator.
Frequently asked questions
Is the EMI an operating expense?
No — financing costs are excluded from NOI. They appear in cash flow.
What's a healthy expense ratio?
Lower is better; many residential lets run roughly 20–40% depending on charges and management.
Why exclude the loan?
So NOI reflects the property itself, comparable across buyers regardless of how each financed it.