Free Rental Property Calculator Online
Use this free rental property calculator to analyze investment property deals. Enter the property price, financing details, rent, vacancy rate, management fees, maintenance, insurance, and property tax to see your monthly cash flow, NOI, cap rate, and cash-on-cash return.
Monthly Cash Flow
Enter your details to calculate
How This Rental Property Calculator Works
The rental property calculator models a complete rental investment by computing the mortgage payment, then subtracting all operating expenses from gross rental income. It accounts for vacancy loss, property management fees, maintenance, insurance, and property taxes to give you a realistic cash flow picture.
For a $280,000 property with 25% down at 7% over 30 years, the mortgage payment is about $1,397/month. If gross rent is $2,200 with 7% vacancy, 10% management, $250 maintenance, $150 insurance, and $200 property tax, the rental property calculator shows roughly $49/month net cash flow.
The bar chart compares total income against total expenses, making it easy to visualize where your money goes each month. The rental property calculator also shows cap rate and cash-on-cash return so you can compare this deal to other investment opportunities.
Typical Rental Property Expenses
Enter realistic numbers in the rental property calculator for accurate cash flow projections.
3 Rules for Screening Rental Deals
The 1% Rule
Monthly rent should be at least 1% of the purchase price. A $200,000 property should rent for $2,000 or more. The rental property calculator shows whether a deal passes this quick screening test.
The 50% Rule
Operating expenses (excluding mortgage) typically consume about 50% of gross rent. On $2,000/month rent, budget $1,000 for expenses. If the remaining $1,000 does not cover the mortgage, cash flow will be negative.
Break-Even Ratio
Total expenses (including mortgage) divided by gross rent should stay below 85%. Above 85%, even a small vacancy spike can turn cash flow negative. The rental property calculator helps you evaluate this ratio for every deal.
Frequently Asked Questions
Disclaimer: This rental property calculator is for educational and illustrative purposes only. Actual returns depend on local market conditions, tenant quality, and property management. Consult a real estate professional before purchasing rental property.
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