Rental ROI Calculator - Rental Property ROI & Investment Return Calculator
Free rental ROI calculator & investment property calculator. Calculate rental property returns, cap rate, cash-on-cash return, and analyze real estate investment performance with comprehensive metrics. Our calculator helps real estate investors analyze rental returns using net operating income, cash flow analysis, and multiple ROI metrics for informed investment property decisions.
Last updated: October 19, 2025
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Property Investment
20% down
Monthly Income & Expenses
Typical: 5-10% for long-term rentals
Typically 1% of property value annually
Typically 8-10% of monthly rent
Investment Analysis
Cash-on-Cash Return
-0.38%
annual return on investment
Cap Rate
6.30%
Annual NOI
$18,900
Monthly Cash Flow
$-22
Total Investment
$69,000
Analysis:
Good investment opportunity with positive returns.
Rental ROI Formulas:
- • Cap Rate = NOI ÷ Property Price × 100
- • Cash-on-Cash = Annual Cash Flow ÷ Total Investment × 100
- • NOI = Rental Income - Operating Expenses
- • Target: 6%+ cash-on-cash, 5%+ cap rate
Rental ROI Calculator Types & Investment Metrics
Formula
NOI ÷ Property Price
Independent of financing method
Target
6-10% Annually
Accounts for leverage and financing
Formula
Income - Expenses
Excludes mortgage and depreciation
Target
$200-$400/Month
Positive cash flow for sustainability
Includes
Rent, Vacancy, Expenses
Projects realistic net income
Metrics
ROI, Cap, Cash Flow
Complete investment performance analysis
Quick Example Result
$300K property, $69K invested, $2,500/month rent with typical expenses:
Cash-on-Cash Return
-0.38%
Cap Rate
6.30%
How Our Rental ROI Calculator Works
Our rental ROI calculator analyzes investment property performance using multiple financial metrics. The calculation applies real estate investment analysis principles including cap rate, cash-on-cash return, and NOI to evaluate rental property profitability.
The Rental ROI Formulas
NOI = (Annual Rent × (1 - Vacancy%)) - Operating ExpensesCap Rate = (NOI ÷ Property Price) × 100Cash Flow = NOI - Annual Mortgage PaymentCash-on-Cash = (Cash Flow ÷ Total Investment) × 100The calculator computes Net Operating Income by subtracting all operating expenses from rental income (adjusted for vacancy). Cap rate shows property performance independent of financing. Cash-on-cash return accounts for leverage and shows actual return on your invested capital, the most relevant metric for leveraged investors.
Shows multiple ROI metrics and their interrelationships for comprehensive analysis
Mathematical Foundation
Rental property ROI calculation is based on income property analysis from real estate investment mathematics. Unlike stocks or bonds with simple return calculations, real estate requires multiple metrics: cap rate (property performance), cash-on-cash return (leveraged return on cash), and cash flow (monthly sustainability). Net Operating Income excludes financing to enable property comparison. The 1% rule provides quick screening: monthly rent should be 1%+ of purchase price for likely positive cash flow. Tax benefits (depreciation, expense deductions) significantly enhance after-tax returns but aren't captured in basic ROI calculations.
- Cap rate measures property performance independent of financing
- Cash-on-cash return shows leveraged return on invested capital
- NOI includes only operating expenses, excludes mortgage and taxes
- Positive cash flow is critical for long-term rental sustainability
- Vacancy reserves (5-10%) protect against income interruptions
- Total return includes cash flow, appreciation, loan paydown, and tax benefits
Sources & References
- The Book on Rental Property Investing - Brandon Turner, BiggerPocketsComprehensive guide to rental property analysis and investing
- Real Estate Finance & Investments - Brueggeman & Fisher (15th Edition)Academic reference for real estate investment analysis
- BiggerPockets - Rental Property Analysis ToolsCommunity and resources for rental property investors
Need help with other investment calculations? Check out our property flip calculator and Airbnb revenue estimator.
Get Custom Calculator for Your PlatformRental ROI Examples
Investment Details:
- Property Price: $300,000
- Down Payment: $60,000 (20%)
- Closing Costs: $9,000
- Monthly Rent: $2,500
- Vacancy Rate: 5%
ROI Metrics:
- Annual Income: $28,500
- Annual Expenses: $9,600
- NOI: $18,900
- Cap Rate: 6.30%
- Cash-on-Cash: -0.38%
Result: -0.38% cash-on-cash return with positive cash flow
Monthly cash flow: $-22. Cap rate: 6.30%. Solid investment with good returns and positive monthly income.
High Cash Flow Example
$150K property, $2,000 rent, low expenses
Returns: 12% CoC, 10% cap rate
Appreciation Play Example
$500K property, $3,500 rent, high expenses
Returns: 4% CoC, 3.5% cap (betting on appreciation)
Frequently Asked Questions
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