Tax Estimate Calculator

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Rental Property ROI Calculator

Investment Summary

Monthly Mortgage (P&I): $0.00
Total Monthly Expenses: $0.00
Monthly Cash Flow: $0.00
Cap Rate: 0.00%
Cash-on-Cash Return: 0.00%

How to Use the Rental ROI Calculator

Calculating the Return on Investment (ROI) is the most critical step for any real estate investor. This calculator helps you determine if a rental property is a "gold mine" or a "money pit" by analyzing cash flow, Cap Rate, and Cash-on-Cash returns.

Understanding Key Real Estate Metrics

  • Cap Rate (Capitalization Rate): This measures the property's natural rate of return without considering financing. It is calculated by dividing the Net Operating Income (NOI) by the purchase price.
  • Cash-on-Cash Return: This is the ratio of annual before-tax cash flow to the total amount of cash invested. It is highly dependent on your loan terms and down payment.
  • Net Operating Income (NOI): Your total annual income minus all operating expenses (taxes, insurance, maintenance), excluding mortgage payments.

Example Calculation

Suppose you purchase a duplex for $300,000 with a $60,000 down payment. If your monthly rent is $2,500 and your total expenses (including mortgage, taxes, and insurance) come to $2,100, your monthly cash flow is $400. Your annual cash flow would be $4,800. To find your Cash-on-Cash return, you divide $4,800 by your initial investment (down payment + closing costs).

Factors That Influence Your ROI

Real estate investing involves more than just rent and mortgage. Consider these "hidden" costs when using the calculator:

Vacancy Rates: No property is occupied 100% of the time. Professional investors usually factor in a 5-8% vacancy loss.

Maintenance and Repairs: Older homes require more upkeep. Setting aside 10% of the monthly rent for repairs is a standard "rule of thumb" to avoid surprise expenses.

Property Management: If you aren't managing the property yourself, expect to pay 8-12% of the monthly rent to a management company.

function calculateRentalROI() { var price = parseFloat(document.getElementById('propPrice').value) || 0; var down = parseFloat(document.getElementById('downPayment').value) || 0; var rate = parseFloat(document.getElementById('intRate').value) || 0; var rent = parseFloat(document.getElementById('monthlyRent').value) || 0; var tax = parseFloat(document.getElementById('annualTax').value) || 0; var ins = parseFloat(document.getElementById('annualIns').value) || 0; var maint = parseFloat(document.getElementById('maintPct').value) || 0; var closing = parseFloat(document.getElementById('closingCosts').value) || 0; if (price <= 0 || rent 0) { monthlyMortgage = loanAmount * (monthlyRate * Math.pow(1 + monthlyRate, numPayments)) / (Math.pow(1 + monthlyRate, numPayments) – 1); } else { monthlyMortgage = loanAmount / numPayments; } // Monthly Operating Expenses var monthlyTax = tax / 12; var monthlyIns = ins / 12; var monthlyMaint = rent * (maint / 100); var totalOperatingExpenses = monthlyTax + monthlyIns + monthlyMaint; var totalMonthlyOutgo = totalOperatingExpenses + monthlyMortgage; // Financial Metrics var monthlyCashFlow = rent – totalMonthlyOutgo; var annualNOI = (rent – totalOperatingExpenses) * 12; var capRate = (annualNOI / price) * 100; var totalInvestedCash = down + closing; var annualCashFlow = monthlyCashFlow * 12; var cashOnCash = (annualCashFlow / totalInvestedCash) * 100; // Display Results document.getElementById('resMortgage').innerText = "$" + monthlyMortgage.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2}); document.getElementById('resExpenses').innerText = "$" + totalMonthlyOutgo.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2}); document.getElementById('resCashFlow').innerText = "$" + monthlyCashFlow.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2}); document.getElementById('resCapRate').innerText = capRate.toFixed(2) + "%"; document.getElementById('resCoC').innerText = cashOnCash.toFixed(2) + "%"; document.getElementById('roiResult').style.display = 'block'; }

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