Finance
Instant, private, and free
Net Operating Income Calculator.
Calculate net operating income from gross operating income and expenses.
Set your values
Results update as you type.
FAQs
How does the net operating income calculator work?
Enter the requested values to receive a deterministic result. No live market, tax, or jurisdiction data is inferred.
Use Cases
Real Estate Investment Analysis
Investors use NOI to evaluate the profitability of income-generating properties, compare investment opportunities, and determine property value using the capitalization rate.
Example: A rental property with $120,000 gross income and $40,000 operating expenses has an NOI of $80,000.
Business Performance Review
Business owners can assess operational efficiency by calculating NOI, helping to identify areas where expenses can be reduced or revenue increased.
Example: A small business with $500,000 revenue and $350,000 operating expenses has an NOI of $150,000.
Frequently Asked Questions
- What is net operating income (NOI)?
- Net operating income (NOI) is a key financial metric used in real estate and business to measure profitability from core operations. It is calculated by subtracting operating expenses from gross operating income. NOI excludes taxes, interest, and capital expenditures, providing a clear view of operational efficiency.
- How do I use this calculator?
- Simply enter your gross operating income (total revenue from operations) and your operating expenses (costs directly tied to running the property or business) in the provided fields. The calculator will automatically subtract expenses from income to give you your net operating income.
- What are typical operating expenses?
- Operating expenses include costs like property management fees, utilities, maintenance, insurance, and property taxes. They do not include mortgage payments, income taxes, or capital improvements. Accurate expense tracking is essential for a reliable NOI calculation.
Tips & Common Mistakes
Tips
- Ensure you include all operating expenses, such as utilities, maintenance, insurance, and property taxes, for an accurate NOI.
- Exclude non-operating items like mortgage interest, income taxes, and capital expenditures from your expense figure.
- Use consistent accounting periods (e.g., monthly or annual) for both income and expenses to get a meaningful NOI.
- Regularly recalculate NOI as income and expenses change to monitor financial health over time.
Common Mistakes to Avoid
- Including mortgage payments or debt service in operating expenses, which understates NOI.
- Forgetting to include all operating costs, such as property management fees or routine repairs.
- Using gross income instead of gross operating income, which may include non-operating revenue like interest income.
Last updated: August 13, 2026