.rental-roi-calculator-wrapper {
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
max-width: 800px;
margin: 0 auto;
padding: 20px;
background: #f9f9f9;
border: 1px solid #e0e0e0;
border-radius: 8px;
}
.rental-roi-calculator-wrapper h2 {
text-align: center;
color: #2c3e50;
margin-bottom: 25px;
}
.calc-grid {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 20px;
}
@media (max-width: 600px) {
.calc-grid {
grid-template-columns: 1fr;
}
}
.input-group {
margin-bottom: 15px;
}
.input-group label {
display: block;
margin-bottom: 5px;
font-weight: 600;
color: #555;
}
.input-group input {
width: 100%;
padding: 10px;
border: 1px solid #ddd;
border-radius: 4px;
font-size: 16px;
box-sizing: border-box;
}
.input-group .currency-symbol {
position: relative;
}
.input-group .currency-symbol:before {
content: '$';
position: absolute;
left: 10px;
top: 10px;
color: #777;
}
.input-group .currency-symbol input {
padding-left: 25px;
}
.calc-btn {
grid-column: 1 / -1;
background-color: #27ae60;
color: white;
border: none;
padding: 15px;
font-size: 18px;
font-weight: bold;
border-radius: 5px;
cursor: pointer;
transition: background 0.3s;
width: 100%;
}
.calc-btn:hover {
background-color: #219150;
}
.results-section {
grid-column: 1 / -1;
margin-top: 25px;
background: white;
padding: 20px;
border-radius: 5px;
border-left: 5px solid #27ae60;
display: none;
}
.result-row {
display: flex;
justify-content: space-between;
margin-bottom: 10px;
padding-bottom: 10px;
border-bottom: 1px solid #eee;
}
.result-row:last-child {
border-bottom: none;
}
.result-label {
color: #555;
}
.result-value {
font-weight: bold;
color: #2c3e50;
font-size: 1.1em;
}
.positive { color: #27ae60; }
.negative { color: #c0392b; }
/* Article Styles */
.seo-article {
margin-top: 50px;
padding-top: 30px;
border-top: 2px solid #eee;
color: #333;
line-height: 1.6;
}
.seo-article h3 {
color: #2c3e50;
margin-top: 20px;
}
.seo-article ul {
padding-left: 20px;
}
.seo-article li {
margin-bottom: 10px;
}
function calculateRentalROI() {
// Get input values
var price = parseFloat(document.getElementById('propPrice').value);
var down = parseFloat(document.getElementById('downPayment').value);
var rate = parseFloat(document.getElementById('interestRate').value);
var term = parseFloat(document.getElementById('loanTerm').value);
var income = parseFloat(document.getElementById('rentalIncome').value);
var expenses = parseFloat(document.getElementById('monthlyExpenses').value);
// Validation
if (isNaN(price) || isNaN(down) || isNaN(rate) || isNaN(term) || isNaN(income) || isNaN(expenses)) {
alert("Please enter valid numbers in all fields.");
return;
}
// Loan Calculations
var loanAmount = price – down;
var monthlyRate = (rate / 100) / 12;
var totalMonths = term * 12;
var mortgagePayment = 0;
if (rate > 0) {
mortgagePayment = loanAmount * (monthlyRate * Math.pow(1 + monthlyRate, totalMonths)) / (Math.pow(1 + monthlyRate, totalMonths) – 1);
} else {
mortgagePayment = loanAmount / totalMonths;
}
// Cash Flow Calculations
var totalMonthlyOutflow = mortgagePayment + expenses;
var monthlyCashFlow = income – totalMonthlyOutflow;
var annualCashFlow = monthlyCashFlow * 12;
// ROI Calculations
// Net Operating Income (NOI) = (Income – Expenses) * 12. Note: NOI excludes mortgage.
var annualNOI = (income – expenses) * 12;
// Cap Rate = (NOI / Purchase Price) * 100
var capRate = (annualNOI / price) * 100;
// Cash on Cash ROI = (Annual Cash Flow / Total Cash Invested) * 100
// Assuming Total Cash Invested is just the Down Payment for this simplified calc
var roi = 0;
if (down > 0) {
roi = (annualCashFlow / down) * 100;
}
// Display Results
document.getElementById('resMortgage').innerText = "$" + mortgagePayment.toFixed(2).replace(/\d(?=(\d{3})+\.)/g, '$&,');
var cashFlowEl = document.getElementById('resCashFlow');
cashFlowEl.innerText = "$" + monthlyCashFlow.toFixed(2).replace(/\d(?=(\d{3})+\.)/g, '$&,');
cashFlowEl.className = "result-value " + (monthlyCashFlow >= 0 ? "positive" : "negative");
var annualCashFlowEl = document.getElementById('resAnnualCashFlow');
annualCashFlowEl.innerText = "$" + annualCashFlow.toFixed(2).replace(/\d(?=(\d{3})+\.)/g, '$&,');
annualCashFlowEl.className = "result-value " + (annualCashFlow >= 0 ? "positive" : "negative");
document.getElementById('resCapRate').innerText = capRate.toFixed(2) + "%";
var roiEl = document.getElementById('resROI');
roiEl.innerText = roi.toFixed(2) + "%";
roiEl.className = "result-value " + (roi >= 0 ? "positive" : "negative");
// Show results section
document.getElementById('results').style.display = 'block';
}
Rental Property Cash Flow & ROI Calculator
Monthly Mortgage Payment:
$0.00
Monthly Cash Flow:
$0.00
Annual Cash Flow:
$0.00
Cap Rate:
0.00%
Cash on Cash ROI:
0.00%
Understanding Your Rental Property Analysis
Investing in real estate is a numbers game. Before purchasing a rental property, it is crucial to analyze the potential returns to ensure the investment meets your financial goals. This Rental Property Cash Flow & ROI Calculator helps you evaluate the profitability of a potential deal by breaking down the most critical metrics.
Key Metrics Explained
- Monthly Cash Flow: This is the net profit you pocket every month after all expenses and mortgage payments are made. Positive cash flow is essential for long-term sustainability.
- Cash on Cash ROI: This metric calculates the annual return on the actual cash you invested (down payment + closing costs). It is one of the most important figures for investors because it compares the profit to the money actually leaving your bank account. A "good" Cash on Cash return varies by market but typically falls between 8% and 12%.
- Cap Rate (Capitalization Rate): The Cap Rate measures the property's natural rate of return assuming you paid all cash. It is calculated by dividing the Net Operating Income (NOI) by the property's purchase price. This helps compare properties irrespective of financing.
How to Estimate Expenses
One of the biggest mistakes new investors make is underestimating expenses. Beyond the mortgage, you must account for property taxes, landlord insurance, maintenance reserves, vacancy rates (typically 5-10% of rent), and property management fees if you aren't self-managing. A common rule of thumb is the "50% Rule," suggesting that 50% of your rental income will go toward operating expenses (excluding mortgage).