Rental Property Calculator
Estimate cap rate and cash flow on a rental.
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About the Rental Property Calculator
Size up a rental investment fast. Enter the purchase price, monthly rent, and monthly operating expenses to get the capitalization rate, annual net operating income (NOI), and monthly cash flow. Cap rate is the standard yardstick for comparing rental properties, and cash flow tells you whether the property pays you each month.
How to use the Rental Property Calculator
- 01Enter your purchase price, monthly rent, and monthly expenses.
- 02Read the result instantly — it recalculates as you type.
- 03Adjust the numbers to model different scenarios.
Frequently asked questions
What is a good cap rate?
Cap rate = annual NOI ÷ price. Many investors target 5–10%, but it varies by market and risk — higher cap rates often mean higher risk.
What counts as expenses?
Property tax, insurance, maintenance, management, and vacancy — but not the mortgage (cap rate is unlevered). Include the mortgage for cash-on-cash return.