Timeshare Calculator
.timeshare-calculator-container {
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
background-color: #f9f9f9;
padding: 25px;
border-radius: 10px;
box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
max-width: 800px;
margin: 30px auto;
color: #333;
}
.timeshare-calculator-container h2 {
color: #0056b3;
text-align: center;
margin-bottom: 20px;
font-size: 1.8em;
}
.timeshare-calculator-container h3 {
color: #0056b3;
margin-top: 25px;
margin-bottom: 15px;
font-size: 1.4em;
}
.timeshare-calculator-container p {
line-height: 1.6;
margin-bottom: 10px;
}
.calculator-form .form-group {
margin-bottom: 15px;
}
.calculator-form label {
display: block;
margin-bottom: 5px;
font-weight: bold;
color: #555;
}
.calculator-form input[type="number"] {
width: calc(100% – 22px);
padding: 10px;
border: 1px solid #ccc;
border-radius: 5px;
font-size: 1em;
box-sizing: border-box;
}
.calculator-form button {
display: block;
width: 100%;
padding: 12px 20px;
background-color: #007bff;
color: white;
border: none;
border-radius: 5px;
font-size: 1.1em;
cursor: pointer;
transition: background-color 0.3s ease;
margin-top: 20px;
}
.calculator-form button:hover {
background-color: #0056b3;
}
.calculator-results {
background-color: #e9f7ff;
border: 1px solid #cce5ff;
border-radius: 8px;
padding: 20px;
margin-top: 25px;
}
.calculator-results p {
font-size: 1.1em;
margin-bottom: 8px;
}
.calculator-results p strong {
color: #0056b3;
}
.calculator-results span {
font-weight: bold;
color: #333;
}
.calculator-results .small-text {
font-size: 0.9em;
color: #666;
margin-top: -5px;
margin-bottom: 15px;
}
.calculator-article ol, .calculator-article ul {
margin-left: 20px;
margin-bottom: 15px;
}
.calculator-article li {
margin-bottom: 8px;
line-height: 1.5;
}
function calculateTimeshareCosts() {
// Get input values
var initialPurchasePrice = parseFloat(document.getElementById('initialPurchasePrice').value);
var annualMaintenanceFee = parseFloat(document.getElementById('annualMaintenanceFee').value);
var annualSpecialAssessment = parseFloat(document.getElementById('annualSpecialAssessment').value || '0'); // Default to 0 if empty
var yearsOfOwnership = parseFloat(document.getElementById('yearsOfOwnership').value);
var annualRentalIncome = parseFloat(document.getElementById('annualRentalIncome').value || '0'); // Default to 0 if empty
var comparableRentalCost = parseFloat(document.getElementById('comparableRentalCost').value);
var opportunityCostRate = parseFloat(document.getElementById('opportunityCostRate').value) / 100; // Convert percentage to decimal
// Validate inputs
if (isNaN(initialPurchasePrice) || initialPurchasePrice < 0) {
alert('Please enter a valid Initial Timeshare Purchase Price.');
return;
}
if (isNaN(annualMaintenanceFee) || annualMaintenanceFee < 0) {
alert('Please enter a valid Annual Maintenance Fee.');
return;
}
if (isNaN(annualSpecialAssessment) || annualSpecialAssessment < 0) {
alert('Please enter a valid Average Annual Special Assessment (or 0).');
return;
}
if (isNaN(yearsOfOwnership) || yearsOfOwnership <= 0) {
alert('Please enter a valid Number of Years You Plan to Own (must be greater than 0).');
return;
}
if (isNaN(annualRentalIncome) || annualRentalIncome < 0) {
alert('Please enter a valid Estimated Annual Rental Income.');
return;
}
if (isNaN(comparableRentalCost) || comparableRentalCost < 0) {
alert('Please enter a valid Estimated Annual Cost of Comparable Vacation Rental.');
return;
}
if (isNaN(opportunityCostRate) || opportunityCostRate < 0) {
alert('Please enter a valid Annual Investment Opportunity Cost Rate.');
return;
}
// Calculations
var totalMaintenanceFees = annualMaintenanceFee * yearsOfOwnership;
var totalSpecialAssessments = annualSpecialAssessment * yearsOfOwnership;
var totalRentalIncomeOffset = annualRentalIncome * yearsOfOwnership;
// Opportunity Cost: What the initial purchase price could have grown to if invested
var futureValueIfInvested = initialPurchasePrice * Math.pow((1 + opportunityCostRate), yearsOfOwnership);
var missedInvestmentGain = futureValueIfInvested – initialPurchasePrice;
// Total Timeshare Cost
var totalTimeshareCost = initialPurchasePrice + totalMaintenanceFees + totalSpecialAssessments – totalRentalIncomeOffset + missedInvestmentGain;
// Total Cost of Renting Comparable Vacations
var totalRentingCost = comparableRentalCost * yearsOfOwnership;
// Cost Difference
var costDifference = totalTimeshareCost – totalRentingCost;
// Annualized Costs
var annualizedTimeshareCost = totalTimeshareCost / yearsOfOwnership;
var annualizedRentingCost = totalRentingCost / yearsOfOwnership;
// Display Results
document.getElementById('displayYears1').textContent = yearsOfOwnership;
document.getElementById('displayYears2').textContent = yearsOfOwnership;
document.getElementById('totalTimeshareCost').textContent = '$' + totalTimeshareCost.toLocaleString('en-US', { minimumFractionDigits: 2, maximumFractionDigits: 2 });
document.getElementById('totalRentingCost').textContent = '$' + totalRentingCost.toLocaleString('en-US', { minimumFractionDigits: 2, maximumFractionDigits: 2 });
document.getElementById('costDifference').textContent = '$' + costDifference.toLocaleString('en-US', { minimumFractionDigits: 2, maximumFractionDigits: 2 });
document.getElementById('annualizedTimeshareCost').textContent = '$' + annualizedTimeshareCost.toLocaleString('en-US', { minimumFractionDigits: 2, maximumFractionDigits: 2 });
document.getElementById('annualizedRentingCost').textContent = '$' + annualizedRentingCost.toLocaleString('en-US', { minimumFractionDigits: 2, maximumFractionDigits: 2 });
}
// Run calculation on page load with default values
window.onload = calculateTimeshareCosts;