Net Operating Income Calculator

What is Net Operating Income?

Net Operating Income (NOI) is a key real estate metric that measures the operating profitability of an income-producing property. It is calculated by subtracting all operating expenses from the effective gross income generated by the property. NOI is widely used by real estate investors, lenders, and appraisers to evaluate property performance and determine value.

Our net operating income calculator makes it easy to compute NOI by entering your property's rental income, other income, occupancy rate, and detailed operating expenses. The calculator works through the income layers to show you the full picture of your property's profitability.

How to Calculate Net Operating Income

The NOI calculation follows a structured approach:

1. Full Rental = Rentable Area x Rental Rate per sq ft
2. Potential Gross Income = Full Rental + Other Income
3. Vacancy Loss = Full Rental x (1 - Occupancy Rate)
4. Effective Gross Income = Potential Gross Income - Vacancy Loss
5. Total Operating Expenses = Property Tax + Management Fees + Insurance + Maintenance + Repairs + Other Expenses
6. Net Operating Income = Effective Gross Income - Total Operating Expenses

For example, a 1,500 sq ft property renting at $300/sq ft/year with 85% occupancy and $113,000 in operating expenses would have a NOI of $271,500.

Explore our Rental Property Calculator for a more comprehensive analysis of your real estate investments.

Why NOI Matters in Real Estate

NOI is the most critical metric when applying for a mortgage on a commercial or residential income property. Lenders use NOI to calculate the debt service coverage ratio (DSCR), which determines how much cash flow is available to cover loan payments. Properties with higher NOI are more likely to qualify for favorable loan terms.

Investors can increase NOI by raising rents, improving occupancy rates, or reducing operating expenses. However, cutting expenses too aggressively may hurt property quality and tenant satisfaction.