.roi-calc-container {
max-width: 800px;
margin: 0 auto;
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
border: 1px solid #e0e0e0;
border-radius: 8px;
padding: 20px;
background-color: #f9f9f9;
box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}
.roi-calc-header {
text-align: center;
margin-bottom: 25px;
}
.roi-calc-header h2 {
color: #2c3e50;
margin-bottom: 5px;
}
.roi-input-grid {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 20px;
}
@media (max-width: 600px) {
.roi-input-grid {
grid-template-columns: 1fr;
}
}
.roi-input-group {
margin-bottom: 15px;
}
.roi-input-group label {
display: block;
font-weight: 600;
margin-bottom: 5px;
color: #444;
font-size: 0.9rem;
}
.roi-input-group input {
width: 100%;
padding: 10px;
border: 1px solid #ccc;
border-radius: 4px;
font-size: 1rem;
box-sizing: border-box;
}
.roi-input-group input:focus {
border-color: #3498db;
outline: none;
}
.roi-section-title {
grid-column: 1 / -1;
font-size: 1.1rem;
font-weight: 700;
color: #34495e;
border-bottom: 2px solid #ddd;
padding-bottom: 5px;
margin-top: 10px;
margin-bottom: 10px;
}
.roi-btn {
grid-column: 1 / -1;
background-color: #27ae60;
color: white;
border: none;
padding: 15px;
font-size: 1.1rem;
font-weight: bold;
border-radius: 4px;
cursor: pointer;
transition: background 0.3s;
margin-top: 10px;
}
.roi-btn:hover {
background-color: #219150;
}
.roi-results {
margin-top: 30px;
background: white;
padding: 20px;
border-radius: 8px;
border: 1px solid #ddd;
display: none;
}
.roi-result-grid {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 15px;
margin-bottom: 20px;
}
.roi-result-item {
text-align: center;
padding: 10px;
background: #f0f4f8;
border-radius: 6px;
}
.roi-result-label {
font-size: 0.85rem;
color: #666;
text-transform: uppercase;
letter-spacing: 0.5px;
}
.roi-result-value {
font-size: 1.4rem;
font-weight: 800;
color: #2c3e50;
margin-top: 5px;
}
.roi-highlight {
grid-column: 1 / -1;
background-color: #e8f8f5;
border: 2px solid #27ae60;
}
.roi-highlight .roi-result-value {
color: #27ae60;
font-size: 2rem;
}
/* Article Styles */
.roi-article {
max-width: 800px;
margin: 40px auto;
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
line-height: 1.6;
color: #333;
}
.roi-article h2 {
color: #2c3e50;
margin-top: 30px;
border-bottom: 1px solid #eee;
padding-bottom: 10px;
}
.roi-article h3 {
color: #34495e;
margin-top: 25px;
}
.roi-article p {
margin-bottom: 15px;
}
.roi-article ul {
margin-bottom: 15px;
padding-left: 20px;
}
.roi-article li {
margin-bottom: 8px;
}
Investment Analysis
Cash on Cash Return
0.00%
Monthly Mortgage (P&I)
0.00
function calculateRentalROI() {
// 1. Get Inputs
var price = parseFloat(document.getElementById('purchasePrice').value) || 0;
var down = parseFloat(document.getElementById('downPayment').value) || 0;
var closing = parseFloat(document.getElementById('closingCosts').value) || 0;
var rehab = parseFloat(document.getElementById('rehabCosts').value) || 0;
var rate = parseFloat(document.getElementById('interestRate').value) || 0;
var termYears = parseFloat(document.getElementById('loanTerm').value) || 0;
var rent = parseFloat(document.getElementById('monthlyRent').value) || 0;
var taxYear = parseFloat(document.getElementById('annualTaxes').value) || 0;
var insYear = parseFloat(document.getElementById('annualInsurance').value) || 0;
var hoaMonth = parseFloat(document.getElementById('monthlyHOA').value) || 0;
// 2. Calculate Mortgage
var loanAmount = price – down;
var monthlyRate = (rate / 100) / 12;
var totalPayments = termYears * 12;
var mortgagePayment = 0;
if (rate > 0 && termYears > 0) {
mortgagePayment = loanAmount * (monthlyRate * Math.pow(1 + monthlyRate, totalPayments)) / (Math.pow(1 + monthlyRate, totalPayments) – 1);
} else {
// Assume 0 interest loan or cash purchase if terms are invalid but price exists
if (termYears > 0) {
mortgagePayment = loanAmount / totalPayments;
}
}
// 3. Calculate Expenses and Income
var monthlyTax = taxYear / 12;
var monthlyIns = insYear / 12;
var totalMonthlyExpenses = monthlyTax + monthlyIns + hoaMonth; // Excluding mortgage
var noiMonthly = rent – totalMonthlyExpenses;
var noiAnnual = noiMonthly * 12;
var monthlyCashFlow = noiMonthly – mortgagePayment;
var annualCashFlow = monthlyCashFlow * 12;
// 4. Calculate Returns
var totalCashInvested = down + closing + rehab;
var cocReturn = 0;
if (totalCashInvested > 0) {
cocReturn = (annualCashFlow / totalCashInvested) * 100;
}
var capRate = 0;
if (price > 0) {
capRate = (noiAnnual / price) * 100;
}
// 5. Update UI
var formatter = new Intl.NumberFormat('en-US', {
style: 'currency',
currency: 'USD',
minimumFractionDigits: 2
});
document.getElementById('resCoc').innerText = cocReturn.toFixed(2) + "%";
document.getElementById('resMonthlyCash').innerText = formatter.format(monthlyCashFlow);
document.getElementById('resAnnualCash').innerText = formatter.format(annualCashFlow);
document.getElementById('resCapRate').innerText = capRate.toFixed(2) + "%";
document.getElementById('resTotalInvested').innerText = formatter.format(totalCashInvested);
document.getElementById('resMortgage').innerText = formatter.format(mortgagePayment);
// Show results container
document.getElementById('resultsArea').style.display = 'block';
}
Understanding Cash on Cash Return in Real Estate
When investing in rental properties, determining the profitability of a potential deal is crucial before signing any contracts. The Cash on Cash Return (CoC) is one of the most popular metrics used by real estate investors to evaluate the performance of an income-generating property.
Unlike simple ROI, which might look at the total value of the asset, Cash on Cash Return focuses strictly on the cash income earned on the cash invested. This calculator helps you determine exactly how hard your money is working for you compared to other investment vehicles like stocks or bonds.
How to Calculate Cash on Cash Return
The formula for Cash on Cash Return is relatively straightforward, yet it requires accurate inputs regarding both your initial investment and your operating cash flow.
Formula:
Cash on Cash Return = (Annual Pre-Tax Cash Flow / Total Cash Invested) × 100%
- Annual Cash Flow: This is your gross rent minus all operating expenses (taxes, insurance, HOA, maintenance) and your mortgage debt service.
- Total Cash Invested: This includes your down payment, closing costs, and any immediate repair or renovation costs required to get the property rented.
Cap Rate vs. Cash on Cash Return
Novice investors often confuse Capitalization Rate (Cap Rate) with Cash on Cash Return. While both measure performance, they serve different purposes:
- Cap Rate: Measures the property's natural rate of return assuming you bought it all in cash. It is calculated as Net Operating Income (NOI) / Purchase Price. It is useful for comparing the intrinsic value of different properties.
- Cash on Cash Return: Takes into account leverage (financing). Since most investors use mortgages, CoC is often a more realistic measure of the actual return on the dollars leaving your bank account.
What is a Good Cash on Cash Return?
A "good" return varies by market and investor strategy. Generally, in the current real estate market:
- 8-12%: Often considered a solid return for long-term buy-and-hold rentals.
- 15%+: Considered excellent, though often requires finding distressed properties or "fixer-uppers" (BRRRR strategy).
- Below 5%: Might be acceptable in high-appreciation markets (like coastal cities) where the primary goal is future value growth rather than immediate cash flow.
Using This Calculator
To get the most accurate result from the calculator above, ensure you include all hidden costs. Don't forget Closing Costs (typically 2-5% of purchase price) and realistic Maintenance Estimates. Underestimating expenses is the most common mistake that leads to negative cash flow.