Real Estate

Rental Property ROI Calculator

Calculate annual net rental cash flow, Cap Rate, Cash-on-Cash return, and total ROI for residential real estate investments.

What this calculator does

The Rental Property ROI Calculator estimates your result instantly from the values you enter, using standard real estate formulas. Calculate annual net rental cash flow, Cap Rate, Cash-on-Cash return, and total ROI for residential real estate investments. Calculations run in your browser, so nothing you type is sent to a server, and the output is an estimate for planning rather than financial advice.

Rental Property ROI Calculator Financial Analysis

$0.00

Cash-on-Cash Return / ROI (%)

  • Net Operating Income (NOI) $0.00
  • Annual Net Cash Flow $0.00
  • Monthly Net Cash Flow $0.00
  • Capitalization Rate (Cap Rate) $0.00
$0.00
Cash-on-Cash Yield
$0.00
Property Cap Rate
$0.00
Total Capital Invested

What This Means

About Rental Property ROI Calculator

The Rental Property ROI Calculator evaluates the profitability of real estate investments, factoring in gross rent, vacancy allowances, operating expenses (taxes, insurance, HOA, maintenance), and mortgage debt service.

Formula & Mathematical Calculation

Net Operating Income (NOI) = Gross Rental Income - Vacancy - Operating Expenses

Annual Net Cash Flow = NOI - Annual Mortgage Payments (P&I)

Total ROI (%) = [ ( Net Cash Flow + Principal Paydown + Property Appreciation ) / Initial Cash Invested ] × 100

Calculation Example

$300,000 Rental Property ($60k Down + $6k Closing = $66k Cash Invested, $2,400/mo Rent): NOI = $19,200/yr. Mortgage = $14,400/yr → Net Cash Flow = $4,800/yr ($400/mo). Cash-on-Cash Return = 7.27% | Total ROI = 18.5% with appreciation.

Key Benefits

  • Calculates monthly cash flow, Cap Rate, and Cash-on-Cash return
  • Accounts for realistic vacancy reserves (5-8%) and repair allowances (5-10%)
  • Includes mortgage principal paydown equity accumulation
  • Models long-term property appreciation and tax depreciation deductions
  • Essential for real estate investors and landlords

How to Use this Calculator

  1. Enter Purchase Price & Financing Details
    Input property price, down payment, interest rate, and term.
  2. Enter Gross Monthly Rental Income
    Input expected monthly rent.
  3. Itemize Operating Expenses
    Input property taxes, insurance, maintenance, property management, and vacancy rate.
  4. Calculate Property ROI
    Click Calculate to view comprehensive cash flow and return metrics.

Assumptions & Limitations

What the calculation assumes

  • Every value you enter is treated as an exact, known amount.
  • Rates and contributions are assumed to stay constant for the whole period unless the form asks for them separately.
  • Results use standard financial formulas and ignore fees, penalties and promotional terms that are not entered above.
  • Inflation, tax changes and market volatility are not modelled unless a field for them is provided.
  • Amounts are unit-agnostic: results are returned in the same currency you enter.

What it does not cover

  • Rental Property ROI Calculator produces estimates for education and planning, not a quote, offer or professional advice.
  • Real-world outcomes differ when fees, taxes, rounding rules or provider-specific terms apply.
  • Local regulations and tax rules vary by country and change over time; verify current rules for your jurisdiction.
  • Figures are only as accurate as the inputs you supply — check them before acting on the result.
  • For decisions with lasting financial impact, confirm the numbers with a qualified professional.

Frequently Asked Questions

The 1% rule suggests that a rental property should generate at least 1% of its total purchase price in gross monthly rent (e.g. $2,000/month rent on a $200,000 property) to ensure strong positive cash flow.

Five: the purchase price, the down payment or capital invested, the gross annual rental income, the annual operating expenses, and the annual mortgage or debt payments. Every result is built from those five inputs alone.

It first finds net operating income as gross annual income minus annual operating expenses. It then subtracts annual debt to get net cash flow. Cash-on-cash return is net cash flow divided by the capital invested, and the cap rate is net operating income divided by the purchase price, both shown as percentages.

The purchase price and the gross annual income must both be greater than zero; otherwise the tool stops with 'Please enter valid revenue and purchase details.' Cash-on-cash return is shown only when the capital invested is above zero.

No. This calculator reports net operating income, net cash flow, cap rate, and cash-on-cash return from the five annual figures you enter. It does not add property appreciation or mortgage principal paydown to the return.

Free to use, no account needed. Calculations run in your browser, so nothing you type is sent to a server. Results are estimates — how we build and check our calculators.

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