.calculator-wrapper {
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
max-width: 800px;
margin: 0 auto;
padding: 20px;
background: #f9f9f9;
border: 1px solid #e0e0e0;
border-radius: 8px;
}
.calc-header {
text-align: center;
margin-bottom: 30px;
color: #2c3e50;
}
.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;
font-size: 0.9em;
}
.input-group input, .input-group select {
width: 100%;
padding: 10px;
border: 1px solid #ccc;
border-radius: 4px;
font-size: 16px;
box-sizing: border-box;
}
.input-group input:focus {
border-color: #3498db;
outline: none;
box-shadow: 0 0 5px rgba(52,152,219,0.3);
}
.calc-btn {
grid-column: 1 / -1;
background-color: #27ae60;
color: white;
padding: 15px;
border: none;
border-radius: 4px;
cursor: pointer;
font-size: 18px;
font-weight: bold;
transition: background 0.3s;
margin-top: 10px;
width: 100%;
}
.calc-btn:hover {
background-color: #219150;
}
.results-section {
grid-column: 1 / -1;
background: white;
padding: 20px;
border-radius: 6px;
box-shadow: 0 2px 5px rgba(0,0,0,0.05);
margin-top: 20px;
display: none;
}
.result-row {
display: flex;
justify-content: space-between;
padding: 10px 0;
border-bottom: 1px solid #eee;
}
.result-row:last-child {
border-bottom: none;
}
.result-label {
color: #7f8c8d;
}
.result-value {
font-weight: bold;
color: #2c3e50;
}
.highlight-result {
font-size: 1.2em;
color: #27ae60;
}
.seo-content {
margin-top: 40px;
line-height: 1.6;
color: #333;
}
.seo-content h2 {
color: #2c3e50;
margin-top: 30px;
}
.seo-content h3 {
color: #34495e;
margin-top: 20px;
}
.seo-content p {
margin-bottom: 15px;
}
.error-msg {
color: #c0392b;
text-align: center;
display: none;
margin-top: 10px;
}
function calculateMortgage() {
// Get Input Values
var homePrice = parseFloat(document.getElementById('homePrice').value);
var downPayment = parseFloat(document.getElementById('downPayment').value);
var interestRate = parseFloat(document.getElementById('interestRate').value);
var loanTermYears = parseInt(document.getElementById('loanTerm').value);
var propertyTaxYear = parseFloat(document.getElementById('propertyTax').value);
var homeInsuranceYear = parseFloat(document.getElementById('homeInsurance').value);
var hoaFees = parseFloat(document.getElementById('hoaFees').value);
// Error Handling
var errorDiv = document.getElementById('error-message');
var resultsDiv = document.getElementById('results');
if (isNaN(homePrice) || isNaN(downPayment) || isNaN(interestRate) ||
isNaN(loanTermYears) || isNaN(propertyTaxYear) ||
isNaN(homeInsuranceYear) || isNaN(hoaFees) ||
homePrice < 0 || downPayment < 0 || interestRate = home price
if (principal 0 && monthlyInterest > 0) {
monthlyPrincipalAndInterest = principal * (monthlyInterest * Math.pow(1 + monthlyInterest, numberOfPayments)) / (Math.pow(1 + monthlyInterest, numberOfPayments) – 1);
} else if (principal > 0 && monthlyInterest === 0) {
// Case for 0% interest loan
monthlyPrincipalAndInterest = principal / numberOfPayments;
}
var monthlyTax = propertyTaxYear / 12;
var monthlyInsurance = homeInsuranceYear / 12;
var totalMonthlyPayment = monthlyPrincipalAndInterest + monthlyTax + monthlyInsurance + hoaFees;
// Total Loan Stats
var totalCostOfLoan = (monthlyPrincipalAndInterest * numberOfPayments);
var totalInterestPaid = totalCostOfLoan – principal;
// If principal is 0, reset stats
if(principal === 0) {
totalCostOfLoan = 0;
totalInterestPaid = 0;
}
// Formatting Function
function formatCurrency(num) {
return '$' + num.toFixed(2).replace(/\d(?=(\d{3})+\.)/g, '$&,');
}
// Update DOM
document.getElementById('res-pi').innerText = formatCurrency(monthlyPrincipalAndInterest);
document.getElementById('res-tax').innerText = formatCurrency(monthlyTax);
document.getElementById('res-ins').innerText = formatCurrency(monthlyInsurance);
document.getElementById('res-hoa').innerText = formatCurrency(hoaFees);
document.getElementById('res-total').innerText = formatCurrency(totalMonthlyPayment);
document.getElementById('res-loan-amount').innerText = formatCurrency(principal);
document.getElementById('res-total-interest').innerText = formatCurrency(totalInterestPaid);
// Total cost includes principal + interest (what you pay the bank), not taxes/insurance over time usually in this metric context
document.getElementById('res-total-cost').innerText = formatCurrency(totalCostOfLoan);
// Show Results
resultsDiv.style.display = 'block';
}
Mortgage Payment Calculator
Estimate your monthly mortgage payments including taxes and insurance.
30 Years
20 Years
15 Years
10 Years
Please enter valid positive numbers.
Principal & Interest:
$0.00
Property Tax (Monthly):
$0.00
Home Insurance (Monthly):
$0.00
HOA Fees:
$0.00
TOTAL MONTHLY PAYMENT:
$0.00
Total Loan Amount:
$0.00
Total Interest Paid:
$0.00
Total Cost of Loan:
$0.00
Understanding Your Mortgage Calculation
Purchasing a home is one of the most significant financial decisions you will make. This Mortgage Payment Calculator is designed to help you understand exactly what your monthly financial commitment will look like. Unlike basic calculators that only show Principal and Interest, this tool incorporates essential factors like Property Taxes, Home Insurance, and HOA fees to provide a realistic "out-the-door" monthly cost.
Components of Your Monthly Payment
When you take out a mortgage, your monthly payment is typically comprised of four main parts, often referred to as PITI:
- Principal: The portion of your payment that goes toward paying down the original amount you borrowed.
- Interest: The cost of borrowing the money, paid to the lender. In the early years of a mortgage, a larger portion of your payment goes toward interest.
- Taxes: Property taxes assessed by your local government. Lenders often collect this monthly and hold it in an escrow account to pay the bill annually.
- Insurance: Homeowners insurance protects your property against damage. Like taxes, this is often paid through an escrow account.
How Interest Rates Impact Affordability
Even a small difference in interest rates can have a massive impact on your monthly payment and the total cost of the loan over time. For example, on a $300,000 loan, a 1% increase in interest rate can increase your monthly payment by hundreds of dollars and your total interest paid by over $60,000 over a 30-year term. Use this calculator to experiment with different rates to see how they affect your buying power.
Strategies to Lower Your Payment
If the calculated monthly payment is higher than your budget allows, consider these strategies:
- Increase your down payment: This reduces the principal loan amount and may eliminate the need for Private Mortgage Insurance (PMI).
- Extend the loan term: Switching from a 15-year to a 30-year term will lower monthly payments, though you will pay more in total interest.
- Shop for lower insurance rates: Homeowners insurance premiums vary significantly between providers.