.calculator-box {
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;
}
.input-group {
margin-bottom: 20px;
display: flex;
flex-direction: column;
}
.input-row {
display: flex;
gap: 20px;
flex-wrap: wrap;
}
.col-half {
flex: 1;
min-width: 250px;
}
label {
font-weight: 600;
margin-bottom: 8px;
color: #333;
display: block;
}
input[type="number"] {
width: 100%;
padding: 12px;
border: 1px solid #ccc;
border-radius: 4px;
font-size: 16px;
box-sizing: border-box;
}
.calc-btn {
background-color: #2c3e50;
color: white;
border: none;
padding: 15px 30px;
font-size: 18px;
font-weight: bold;
border-radius: 4px;
cursor: pointer;
width: 100%;
transition: background 0.3s;
}
.calc-btn:hover {
background-color: #34495e;
}
.results-box {
margin-top: 30px;
padding: 20px;
background-color: #e8f6f3;
border: 1px solid #bcdecb;
border-radius: 4px;
display: none;
}
.result-metric {
text-align: center;
margin-bottom: 15px;
}
.result-label {
font-size: 14px;
color: #555;
text-transform: uppercase;
letter-spacing: 1px;
}
.result-value {
font-size: 36px;
font-weight: 800;
color: #27ae60;
}
.result-sub {
font-size: 18px;
color: #333;
margin-top: 5px;
}
.error-msg {
color: #c0392b;
font-weight: bold;
display: none;
margin-top: 10px;
text-align: center;
}
.article-content {
line-height: 1.6;
color: #444;
}
.article-content h2 {
color: #2c3e50;
margin-top: 30px;
}
.article-content ul {
margin-bottom: 20px;
}
.article-content li {
margin-bottom: 10px;
}
function calculateROI() {
// Get input values
var downPayment = document.getElementById('downPayment').value;
var closingCosts = document.getElementById('closingCosts').value;
var rehabCosts = document.getElementById('rehabCosts').value;
var monthlyRent = document.getElementById('monthlyRent').value;
var monthlyMortgage = document.getElementById('monthlyMortgage').value;
var otherExpenses = document.getElementById('otherExpenses').value;
var errorMsg = document.getElementById('errorMsg');
var resultsBox = document.getElementById('results');
// Reset error
errorMsg.style.display = 'none';
// Validate inputs
if (downPayment === "" || closingCosts === "" || monthlyRent === "" || monthlyMortgage === "" || otherExpenses === "") {
errorMsg.innerHTML = "Please fill in all required fields (Rehab costs can be 0).";
errorMsg.style.display = 'block';
resultsBox.style.display = 'none';
return;
}
// Convert to floats
var valDown = parseFloat(downPayment);
var valClosing = parseFloat(closingCosts);
var valRehab = rehabCosts === "" ? 0 : parseFloat(rehabCosts);
var valRent = parseFloat(monthlyRent);
var valMortgage = parseFloat(monthlyMortgage);
var valExpenses = parseFloat(otherExpenses);
if (isNaN(valDown) || isNaN(valClosing) || isNaN(valRent) || isNaN(valMortgage) || isNaN(valExpenses)) {
errorMsg.innerHTML = "Please ensure all values are valid numbers.";
errorMsg.style.display = 'block';
resultsBox.style.display = 'none';
return;
}
// Calculations
var totalCashInvested = valDown + valClosing + valRehab;
// Check for zero investment to avoid infinity
if (totalCashInvested === 0) {
errorMsg.innerHTML = "Total Cash Invested cannot be zero.";
errorMsg.style.display = 'block';
resultsBox.style.display = 'none';
return;
}
var monthlyCashFlow = valRent – (valMortgage + valExpenses);
var annualCashFlow = monthlyCashFlow * 12;
var cocReturn = (annualCashFlow / totalCashInvested) * 100;
// Formatting Output
var formatter = new Intl.NumberFormat('en-US', {
style: 'currency',
currency: 'USD',
minimumFractionDigits: 0,
maximumFractionDigits: 0,
});
document.getElementById('cocResult').innerHTML = cocReturn.toFixed(2) + "%";
document.getElementById('annualCashFlow').innerHTML = formatter.format(annualCashFlow);
document.getElementById('totalInvested').innerHTML = formatter.format(totalCashInvested);
// Color coding the result
if(cocReturn < 0) {
document.getElementById('cocResult').style.color = "#c0392b"; // Red
} else {
document.getElementById('cocResult').style.color = "#27ae60"; // Green
}
// Show results
resultsBox.style.display = 'block';
}
Rental Property Cash on Cash Return Calculator
1. Initial Investment
2. Monthly Cash Flow
(Taxes, Insurance, HOA, Maintenance, Vacancy)
Please enter valid numeric values for all fields.
Cash on Cash Return
0.00%
Annual Cash Flow
$0
Total Cash Invested
$0
What is Cash on Cash Return?
Cash on Cash (CoC) Return is a fundamental metric in real estate investing that calculates the annual return investors earned on the property in relation to the amount of mortgage paid during the same year. It is considered one of the most important figures to determine the profitability of a rental property because it looks specifically at the actual cash you put into the deal, ignoring the loan amount.
Unlike ROI (Return on Investment) which might include equity buildup, CoC Return focuses strictly on cash flow. This makes it an essential tool for investors who prioritize passive income streams over long-term appreciation.
How to Calculate Cash on Cash Return
The formula for calculating Cash on Cash Return is relatively straightforward but requires accurate inputs regarding your initial capital and ongoing expenses. The formula is:
Cash on Cash Return = (Annual Pre-Tax Cash Flow / Total Cash Invested) x 100%
Key Variables Explanation:
- Annual Pre-Tax Cash Flow: This is calculated by taking the Gross Annual Rental Income and subtracting all operating expenses and debt service (mortgage payments).
(Monthly Rent – Mortgage – Expenses) x 12 - Total Cash Invested: This is the sum of all out-of-pocket cash required to acquire the property. It includes the Down Payment, Closing Costs, and any immediate Repair or Rehab costs.
What is a Good Cash on Cash Return?
There is no "one size fits all" answer, but most real estate investors aim for a Cash on Cash return that outperforms the stock market (typically 8-10%).
- 8% – 12%: Generally considered a solid return for a standard rental property in a stable market.
- 15%+: Considered an excellent return, often found in riskier markets or through strategies like BRRRR (Buy, Rehab, Rent, Refinance, Repeat).
- Below 5%: Might be acceptable in high-appreciation markets (like San Francisco or NYC), where the primary goal is equity growth rather than cash flow.
Why Use This Calculator?
Our Rental Property Cash on Cash Return Calculator helps you quickly vet potential deals without getting bogged down in complex spreadsheets. By inputting your purchase costs and estimated operating expenses, you can instantly see if a property meets your investment criteria before making an offer.