Guides Real Estate

Rental Property ROI Guide

13 min read Educational Guide Updated March 07, 2026
Guide note: Written by the FundJos Editorial Team and reviewed for calculator consistency on March 07, 2026. This guide is for general educational purposes only and is not legal, tax, insurance, investment, or financial advice.

Evaluating Rental Investments

Real estate can build wealth, but not all properties are good investments. Understanding ROI metrics helps identify profitable opportunities and avoid costly mistakes. Never buy a rental property without running the numbers first.

Key ROI Metrics

Cap Rate = Net Operating Income / Property Value. Good range: 5-10%. Cash Flow = Income - All Expenses (including mortgage). Cash-on-Cash Return = Annual Cash Flow / Cash Invested. Target: 8%+. 1% Rule: Monthly rent should be 1%+ of purchase price. 2% Rule: Monthly rent should be 2%+ (excellent deals).

Sample Analysis

Property: $200,000 purchase, $40,000 down. Rent: $1,800/month. Expenses: Taxes $300, Insurance $100, Maintenance $150, Vacancy $90, Property Management $150. NOI = $1,800 - $790 = $1,010/month. Cap Rate = $12,120 / $200,000 = 6%. Cash Flow = $1,010 - $850 mortgage = $160/month. Cash-on-Cash = $1,920 / $40,000 = 4.8% (after financing).

Expenses to Include

Mortgage (P&I), Property taxes, Insurance, Maintenance (budget monthly), Vacancy allowance (5-10%), Property management (8-10% rent), Utilities (if landlord pays), HOA fees, Capital expenditures (roof, HVAC - budget monthly). Don't underestimate expenses - they're always higher than expected.

Key Takeaways

Calculate ROI before purchasing. Factor in vacancies and repairs. Positive cash flow is essential. Location determines long-term appreciation. Run multiple scenarios (best, expected, worst case). Use our Rental ROI Calculator for detailed analysis.