Estimate your monthly house payment including taxes and insurance.
Estimated Monthly Payment
$0.00
P&I: $0Tax: $0Ins: $0
How to Use This Mortgage Calculator
Planning to buy a home is one of the most significant financial decisions you'll ever make. Our mortgage calculator helps you break down the costs into manageable monthly figures. By inputting your home price, down payment, and expected interest rates, you can see exactly how much house you can afford.
Understanding PITI
Most homeowners don't just pay back the bank; they pay "PITI," which stands for Principal, Interest, Taxes, and Insurance. Our calculator includes all four components to give you a realistic budget:
Principal: The actual balance of the loan you're paying back.
Interest: The cost of borrowing money from the lender.
Taxes: Real estate taxes charged by your local government.
Insurance: Homeowners insurance to protect your property against damage.
Factors That Affect Your Monthly Payment
Several variables can drastically change your monthly obligation:
Credit Score: A higher credit score typically qualifies you for a lower interest rate, saving you thousands over the life of the loan.
Down Payment: If you put down less than 20%, you may be required to pay Private Mortgage Insurance (PMI), which increases your monthly cost.
Loan Term: A 15-year mortgage usually has a lower interest rate but higher monthly payments compared to a 30-year mortgage.
Realistic Mortgage Examples
Home Price
Down Payment
Rate
Term
Est. Monthly (P+I)
$250,000
$50,000 (20%)
6.0%
30 Years
$1,199.10
$400,000
$80,000 (20%)
7.0%
30 Years
$2,128.97
$500,000
$100,000 (20%)
5.5%
15 Years
$3,268.35
Tips for Lowering Your Mortgage Payment
If the calculated payment feels too high, consider these strategies:
1. Save for a larger down payment to reduce the principal.
2. Shop around with different lenders to find the best interest rate.
3. Consider a longer loan term, though you will pay more in total interest.
4. Look into property tax exemptions if you are a first-time buyer or veteran.
function calculateMortgage() {
var homePrice = parseFloat(document.getElementById("homePrice").value);
var downPayment = parseFloat(document.getElementById("downPayment").value);
var interestRate = parseFloat(document.getElementById("interestRate").value);
var loanTerm = parseFloat(document.getElementById("loanTerm").value);
var annualTax = parseFloat(document.getElementById("propertyTax").value);
var annualInsurance = parseFloat(document.getElementById("insurance").value);
// Validation
if (isNaN(homePrice) || isNaN(downPayment) || isNaN(interestRate) || isNaN(loanTerm)) {
alert("Please enter valid numbers in all required fields.");
return;
}
if (downPayment >= homePrice) {
alert("Down payment cannot be greater than or equal to the home price.");
return;
}
var principal = homePrice – downPayment;
var monthlyRate = (interestRate / 100) / 12;
var numberOfPayments = loanTerm * 12;
// Monthly Principal and Interest calculation
var x = Math.pow(1 + monthlyRate, numberOfPayments);
var monthlyPI = (principal * x * monthlyRate) / (x – 1);
// Monthly Tax and Insurance
var monthlyTax = (isNaN(annualTax) ? 0 : annualTax) / 12;
var monthlyIns = (isNaN(annualInsurance) ? 0 : annualInsurance) / 12;
var totalMonthly = monthlyPI + monthlyTax + monthlyIns;
// Display results
document.getElementById("resultContainer").style.display = "block";
document.getElementById("monthlyTotal").innerText = "$" + totalMonthly.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2});
document.getElementById("piBreakdown").innerText = "$" + monthlyPI.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2});
document.getElementById("taxBreakdown").innerText = "$" + monthlyTax.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2});
document.getElementById("insBreakdown").innerText = "$" + monthlyIns.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2});
// Smooth scroll to result
document.getElementById("resultContainer").scrollIntoView({ behavior: 'smooth', block: 'nearest' });
}