Rental Property Calculator
Estimate rental property cash flow, mortgage payment, operating expenses, NOI, cap rate, cash-on-cash return, ROI, vacancy impact, and total investment return.
Rental Property Details
This rental property calculator gives estimates only. Actual results may vary based on rent changes, vacancies, repairs, taxes, insurance, financing, property management, local market conditions, and selling costs.
Enter values and click Calculate Rental Property.
Rental Property Breakdown
Effective Rent$0.00
Operating Expenses$0.00
Mortgage Payment$0.00
Rental Property Summary
| Purchase price | $0.00 |
| Down payment | $0.00 |
| Monthly rent | $0.00 |
| Monthly cash flow | $0.00 |
| Annual NOI | $0.00 |
| Cap rate | 0% |
| Cash-on-cash return | 0% |
| Total ROI | 0% |
| Status | — |
Rental Property Calculator: Estimate Cash Flow, Cap Rate, NOI, and ROI
Use this guide with the rental property calculator above to estimate monthly rent income, vacancy impact, operating expenses, mortgage payment, NOI, cap rate, cash-on-cash return, sale proceeds, and total rental property ROI.
What Is a Rental Property Calculator?
A rental property calculator is a real estate investment tool that estimates how a rental property may perform financially. It compares rent income with vacancy, expenses, mortgage payment, upfront cash invested, and possible future sale proceeds.
Investors use rental property calculators to quickly review whether a property may generate positive cash flow, a reasonable cap rate, and a strong cash-on-cash return before making a purchase decision.
How to Use This Rental Property Calculator
Enter the property price, down payment, loan terms, rent, vacancy, expenses, upfront costs, rent growth, appreciation, holding period, and selling cost assumptions.
Enter Purchase Details
Add the property price, down payment, closing costs, and initial repair costs.
Add Financing Terms
Enter the interest rate and loan term to estimate the monthly mortgage payment.
Add Rent and Expenses
Include rent, vacancy, taxes, insurance, repairs, management, HOA, and utilities.
Review Rental Returns
See cash flow, NOI, cap rate, cash-on-cash return, sale proceeds, and total ROI.
Rental Property Investment Formulas
Three useful rental property formulas are:
These formulas help compare rental properties, but they should be combined with local market research, inspection results, financing terms, and realistic vacancy assumptions.
What This Rental Property Calculator Shows
This calculator gives a practical rental property estimate using common real estate investment metrics.
Monthly Cash Flow
The estimated cash left after operating expenses and mortgage payment.
Net Operating Income
Annual rental income after vacancy and operating expenses, before mortgage debt service.
Cap Rate
NOI divided by purchase price, used to compare income-producing properties.
Cash-on-Cash Return
Annual cash flow divided by total cash invested into the rental property.
Effective Rent
Monthly rent after reducing for vacancy assumptions.
Total ROI
An estimate of total return after cash flow, appreciation, sale costs, and remaining loan balance.
Rental Property Example
Suppose a rental property costs $325,000, rents for $2,600 per month, and has a 5% vacancy estimate. The calculator reduces rental income for vacancy, subtracts operating expenses, and then subtracts the mortgage payment.
The result shows estimated monthly cash flow. It also calculates NOI, cap rate, cash-on-cash return, sale proceeds, and total ROI over the holding period.
Cash Flow vs. NOI
Cash flow includes the mortgage payment and shows how much money may remain each month after the loan payment. This is important for investors who want the rental property to support itself.
NOI does not include mortgage payment. It focuses on property income after operating expenses and helps compare different properties without being affected by the buyer’s financing structure.
Why Rental Property Analysis Matters
Rental income alone does not show the full picture. Vacancy, repairs, taxes, insurance, property management, HOA fees, utilities, financing, and selling costs can all affect returns.
A rental property calculator helps organize those assumptions before making an offer, comparing properties, or speaking with a lender.
Rental Property Planning Tips
Related Calculators and Trusted Rental Property Resources
Continue planning with related real estate calculators and trusted educational resources about rental property, mortgages, investing, and tax considerations.
Real Estate Calculator
Estimate property cash flow, ROI, cap rate, and investment returns.
Open Tool → Internal ToolMortgage Calculator
Estimate monthly mortgage payment, taxes, insurance, PMI, and total cost.
Open Tool → Internal ToolAmortization Calculator
See how loan principal and interest change over time.
Open Tool → Internal ToolROI Calculator
Calculate return on investment, profit, and annualized ROI.
Open Tool →Learn More From Official Housing and Tax Sources
These external resources are provided for educational purposes and open in a new tab.
Residential Rental Property
Read IRS information about rental income and expenses.
Visit IRS → CFPBOwning a Home
Explore mortgage and homeownership education from CFPB.
Visit CFPB → HUDRental Housing
Review rental housing and assistance information from HUD.
Visit HUD → Investor.govInvestor Education
Explore general investing education and investor resources.
Visit Investor.gov →Frequently Asked Questions
What is a rental property calculator?
A rental property calculator estimates rental income, expenses, mortgage payment, cash flow, NOI, cap rate, cash-on-cash return, and ROI.
How do you calculate rental property cash flow?
Rental property cash flow is commonly calculated by subtracting operating expenses and mortgage payment from effective rental income.
What is NOI for a rental property?
NOI, or net operating income, is rental income after vacancy and operating expenses, before mortgage payments and financing costs.
What is a good cap rate for rental property?
A good cap rate depends on the market, property type, location, risk level, financing, and investor goals. Higher cap rates may also come with higher risk.
Can this calculator predict exact rental property returns?
No. It provides estimates only. Actual returns may vary because of rent changes, vacancies, repairs, taxes, insurance, financing, tenant risk, and property market conditions.
Important Disclaimer
This rental property calculator is for educational and informational purposes only. It does not provide financial, investment, tax, legal, mortgage, or real estate advice. Rental property returns can vary based on market conditions, tenant behavior, repairs, taxes, insurance, financing, local laws, and property management.