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Rental Property Calculator

Calculate ROI, cash flow, cap rate, and NOI for rental properties.

⚡ Instant results🔒 Private — runs locally🆓 Free forever🚫 No signup

Rental Property Calculator

Calculate ROI, cash flow, cap rate, and NOI for rental properties.

⚡ Instant🔒 Private🆓 Free🚫 No signupFinancially accurate
$
$
%
years
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Property Purchase Formula

Loan = Price – Down Payment M = Loan × [r(1+r)ⁿ] ÷ [(1+r)ⁿ – 1]
Price = Property purchase price
Down Payment = Upfront cash payment
Loan = Amount financed
M = Monthly mortgage payment
r = Monthly rate, n = Total payments

ℹ️ Does not include property tax, homeowner's insurance, maintenance, or HOA fees

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Disclaimer

Results provided by this calculator are for informational and educational purposes only. They are based on the values you enter and standard formulas, and should not be considered financial, medical, legal, or professional advice. Always consult a qualified professional before making important decisions based on these results. Roughtools makes no warranties regarding the accuracy or completeness of these calculations for your specific situation.

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Frequently Asked Questions

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Pro Tips

1

Always verify critical calculations with a second method or source — for important decisions, this tool provides a starting point, not a final answer.

2

Input accuracy determines output accuracy. Use precise values rather than rough estimates for the most useful results.

3

Run the calculation multiple times with slightly different inputs to understand the sensitivity of the result to your assumptions.

4

For professional, financial, medical, or legal decisions, always confirm results with a qualified professional before acting.

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When to Use This Calculator

📊Quick calculations

Use the Rental Property Calculator for fast, accurate calculations without installing any software.

🎓Learning and education

Understand the formula and see how changing inputs affects the result for educational purposes.

💼Professional estimates

Get a quick estimate before performing more detailed analysis or consulting a professional.

📱On the go

Accessible from any device — no app to install, no account required, works offline after loading.

🔄Scenario comparison

Run multiple scenarios quickly by changing one input at a time to understand sensitivities.

About the Rental Property Calculator

This rental property calculator analyzes the financial performance of any residential or commercial rental investment, computing monthly cash flow, annual net operating income (NOI), cap rate, cash-on-cash return, and gross rent multiplier. Enter purchase price, financing details, expected rent, and operating expenses to evaluate whether a property meets your investment criteria. Built for real estate investors analyzing potential acquisitions.

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How to Use the Rental Property Calculator

  1. 1

    Enter the purchase price and down payment (for financing analysis).

  2. 2

    Enter the mortgage rate and term to calculate monthly debt service.

  3. 3

    Enter monthly gross rent and expected vacancy rate (typically 5–10%).

  4. 4

    Enter monthly operating expenses: taxes, insurance, maintenance, management fees.

  5. 5

    Review monthly cash flow, cap rate, cash-on-cash return, and annual NOI.

View all →

Your input is processed locally in your browser and is never stored, transmitted, or shared with any server. See our Privacy Policy.

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