Hourly Rate vs Salary Calculator

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Rental Property ROI & Cash Flow Calculator

Monthly Cash Flow
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Cap Rate
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Gross Yield
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function calculateRentalROI() { var price = parseFloat(document.getElementById('purchasePrice').value) || 0; var closing = parseFloat(document.getElementById('closingCosts').value) || 0; var rent = parseFloat(document.getElementById('monthlyRent').value) || 0; var tax = parseFloat(document.getElementById('propertyTax').value) || 0; var insurance = parseFloat(document.getElementById('insurance').value) || 0; var reservePercent = parseFloat(document.getElementById('maintenanceVacancy').value) || 0; var totalInvestment = price + closing; var annualGrossIncome = rent * 12; var annualReserves = (reservePercent / 100) * annualGrossIncome; var totalAnnualExpenses = tax + insurance + annualReserves; var annualNetOperatingIncome = annualGrossIncome – totalAnnualExpenses; var monthlyCashFlow = annualNetOperatingIncome / 12; var capRate = (annualNetOperatingIncome / totalInvestment) * 100; var grossYield = (annualGrossIncome / price) * 100; document.getElementById('monthlyCashFlow').innerText = '$' + monthlyCashFlow.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2}); document.getElementById('capRate').innerText = capRate.toFixed(2) + '%'; document.getElementById('grossYield').innerText = grossYield.toFixed(2) + '%'; document.getElementById('resultsArea').style.display = 'block'; }

How to Evaluate a Rental Property Investment

Investing in real estate requires more than just a gut feeling. To ensure a property is a "good deal," savvy investors use metrics like Cap Rate and Cash Flow. This calculator helps you determine if a property will put money in your pocket every month or become a financial drain.

Understanding the Key Metrics

  • Cap Rate (Capitalization Rate): This represents the annual rate of return on a real estate investment based on the income the property is expected to generate. It is calculated by dividing the Net Operating Income (NOI) by the total investment cost.
  • Monthly Cash Flow: This is the net amount of cash that is left over after all operating expenses, taxes, insurance, and maintenance reserves have been paid.
  • Gross Yield: A simple calculation of the annual rent divided by the purchase price. While useful for a quick screening, it doesn't account for expenses like taxes and repairs.

Realistic Investment Example

Imagine you are looking at a condo priced at $250,000. You estimate closing costs at $5,000, bringing your total investment to $255,000.

If the property rents for $2,000 per month, your gross annual income is $24,000. However, you must account for:

  • Property Taxes: $3,000/year
  • Insurance: $1,200/year
  • Maintenance & Vacancy Reserve (10%): $2,400/year

In this scenario, your Net Operating Income (NOI) would be $17,400 per year ($24,000 – $6,600). This results in a 6.82% Cap Rate and a monthly cash flow of $1,450 (assuming no mortgage). If you have a mortgage, you would subtract the principal and interest payments from this monthly cash flow to find your true "cash-on-cash" return.

Expert Tip: Don't Forget the 1% Rule

Many investors use the "1% Rule" as a quick filter. This rule suggests that a property should rent for at least 1% of its purchase price. In our example, a $250,000 property would need to rent for $2,500 to meet this rule. While difficult to find in many modern markets, it serves as a benchmark for high-performance cash flow properties.

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