#rental-roi-calculator-wrapper {
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
max-width: 800px;
margin: 0 auto;
color: #333;
line-height: 1.6;
}
#rental-roi-calculator-wrapper .calc-container {
background: #f9f9f9;
border: 1px solid #e0e0e0;
border-radius: 8px;
padding: 30px;
box-shadow: 0 4px 6px rgba(0,0,0,0.05);
margin-bottom: 40px;
}
#rental-roi-calculator-wrapper h2 {
text-align: center;
color: #2c3e50;
margin-bottom: 25px;
}
#rental-roi-calculator-wrapper .input-grid {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 20px;
}
@media (max-width: 600px) {
#rental-roi-calculator-wrapper .input-grid {
grid-template-columns: 1fr;
}
}
#rental-roi-calculator-wrapper .input-group {
margin-bottom: 15px;
}
#rental-roi-calculator-wrapper label {
display: block;
margin-bottom: 5px;
font-weight: 600;
font-size: 0.95em;
}
#rental-roi-calculator-wrapper input[type="number"] {
width: 100%;
padding: 10px;
border: 1px solid #ccc;
border-radius: 4px;
font-size: 16px;
box-sizing: border-box;
}
#rental-roi-calculator-wrapper .calc-btn {
display: block;
width: 100%;
background-color: #27ae60;
color: white;
border: none;
padding: 15px;
font-size: 18px;
font-weight: bold;
border-radius: 5px;
cursor: pointer;
transition: background 0.3s;
margin-top: 10px;
}
#rental-roi-calculator-wrapper .calc-btn:hover {
background-color: #219150;
}
#rental-roi-calculator-wrapper .results-section {
background: #fff;
border: 1px solid #ddd;
padding: 20px;
border-radius: 5px;
margin-top: 25px;
display: none;
}
#rental-roi-calculator-wrapper .result-row {
display: flex;
justify-content: space-between;
padding: 10px 0;
border-bottom: 1px solid #eee;
}
#rental-roi-calculator-wrapper .result-row:last-child {
border-bottom: none;
}
#rental-roi-calculator-wrapper .result-label {
font-weight: 500;
}
#rental-roi-calculator-wrapper .result-value {
font-weight: bold;
color: #2c3e50;
}
#rental-roi-calculator-wrapper .highlight-result {
color: #27ae60;
font-size: 1.2em;
}
#rental-roi-calculator-wrapper .content-section h3 {
color: #2c3e50;
border-bottom: 2px solid #27ae60;
padding-bottom: 10px;
margin-top: 30px;
}
#rental-roi-calculator-wrapper .content-section ul {
padding-left: 20px;
}
#rental-roi-calculator-wrapper .content-section li {
margin-bottom: 10px;
}
function calculateRentalROI() {
// 1. Get Input Values
var price = parseFloat(document.getElementById('purchasePrice').value) || 0;
var downPayment = parseFloat(document.getElementById('downPayment').value) || 0;
var closingCosts = parseFloat(document.getElementById('closingCosts').value) || 0;
var interestRate = parseFloat(document.getElementById('interestRate').value) || 0;
var loanTerm = parseFloat(document.getElementById('loanTerm').value) || 30;
var monthlyRent = parseFloat(document.getElementById('monthlyRent').value) || 0;
var annualTaxes = parseFloat(document.getElementById('annualTaxes').value) || 0;
var annualInsurance = parseFloat(document.getElementById('annualInsurance').value) || 0;
var monthlyHOA = parseFloat(document.getElementById('monthlyHOA').value) || 0;
var maintenancePercent = parseFloat(document.getElementById('maintenance').value) || 0;
// 2. Perform Calculations
// Loan Calculation
var loanAmount = price – downPayment;
var monthlyMortgage = 0;
if (loanAmount > 0 && interestRate > 0) {
var r = (interestRate / 100) / 12;
var n = loanTerm * 12;
monthlyMortgage = loanAmount * (r * Math.pow(1 + r, n)) / (Math.pow(1 + r, n) – 1);
} else if (loanAmount > 0 && interestRate === 0) {
monthlyMortgage = loanAmount / (loanTerm * 12);
}
// Monthly Operating Expenses
var monthlyTaxes = annualTaxes / 12;
var monthlyInsurance = annualInsurance / 12;
var maintenanceReserve = monthlyRent * (maintenancePercent / 100);
var totalOperatingExpenses = monthlyTaxes + monthlyInsurance + monthlyHOA + maintenanceReserve;
var totalMonthlyExpenses = totalOperatingExpenses + monthlyMortgage;
// Cash Flow
var monthlyCashFlow = monthlyRent – totalMonthlyExpenses;
var annualCashFlow = monthlyCashFlow * 12;
// NOI (Net Operating Income) for Cap Rate
// NOI = Income – Operating Expenses (excluding mortgage)
var annualNOI = (monthlyRent * 12) – (totalOperatingExpenses * 12);
// Cash on Cash ROI
var totalCashInvested = downPayment + closingCosts;
var cocROI = 0;
if (totalCashInvested > 0) {
cocROI = (annualCashFlow / totalCashInvested) * 100;
}
// Cap Rate
var capRate = 0;
if (price > 0) {
capRate = (annualNOI / price) * 100;
}
// 3. Display Results
document.getElementById('resMortgage').innerHTML = '$' + monthlyMortgage.toFixed(2).replace(/\d(?=(\d{3})+\.)/g, '$&,');
document.getElementById('resExpenses').innerHTML = '$' + totalMonthlyExpenses.toFixed(2).replace(/\d(?=(\d{3})+\.)/g, '$&,');
var cfElement = document.getElementById('resCashFlow');
cfElement.innerHTML = '$' + monthlyCashFlow.toFixed(2).replace(/\d(?=(\d{3})+\.)/g, '$&,');
cfElement.style.color = monthlyCashFlow >= 0 ? '#27ae60' : '#c0392b';
var acfElement = document.getElementById('resAnnualCashFlow');
acfElement.innerHTML = '$' + annualCashFlow.toFixed(2).replace(/\d(?=(\d{3})+\.)/g, '$&,');
acfElement.style.color = annualCashFlow >= 0 ? '#333' : '#c0392b';
var cocElement = document.getElementById('resCoC');
cocElement.innerHTML = cocROI.toFixed(2) + '%';
cocElement.style.color = cocROI >= 0 ? '#27ae60' : '#c0392b';
document.getElementById('resCapRate').innerHTML = capRate.toFixed(2) + '%';
// Show results container
document.getElementById('results').style.display = 'block';
}
Rental Property ROI Calculator
Investment Analysis
Monthly Mortgage P&I:
$0.00
Total Monthly Expenses:
$0.00
Monthly Cash Flow:
$0.00
Annual Cash Flow:
$0.00
Cash on Cash ROI:
0.00%
Cap Rate:
0.00%
How to Calculate Rental Property ROI
Evaluating a real estate investment requires more than just looking at the rental income. To truly understand the profitability of a rental property, investors rely on specific metrics like Cash on Cash Return and Cap Rate. Our Rental Property ROI Calculator helps you analyze the numbers instantly to make informed investment decisions.
Key Investment Metrics Explained
- Cash Flow: This is the net income left in your pocket after all expenses (mortgage, taxes, insurance, repairs) are paid. Positive cash flow is essential for a sustainable investment.
- Cash on Cash Return (CoC ROI): This measures the annual return on the actual cash you invested (down payment + closing costs). A CoC return of 8-12% is often considered good in many markets.
- Cap Rate (Capitalization Rate): This metric evaluates the profitability of the property independent of financing. It is calculated by dividing Net Operating Income (NOI) by the property's current market value.
Real-World Example
Imagine you purchase a property for $300,000 with a 20% down payment ($60,000) and $5,000 in closing costs. Your total cash invested is $65,000.
If the property generates $2,500 in monthly rent and your total monthly expenses (mortgage, taxes, etc.) are $2,000, your monthly cash flow is $500.
Annual Cash Flow: $500 × 12 = $6,000.
ROI Calculation: ($6,000 / $65,000) × 100 = 9.23%.
Using this calculator ensures you don't overlook hidden costs like vacancy reserves or maintenance, giving you a realistic picture of your potential returns.