Annual Savings Interest Rate Calculator

Mortgage Payment Calculator with Taxes & Insurance .mortgage-calc-wrapper { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; max-width: 800px; margin: 0 auto; background: #f9f9f9; padding: 20px; border-radius: 8px; box-shadow: 0 2px 10px rgba(0,0,0,0.05); } .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; font-weight: 600; margin-bottom: 5px; color: #333; font-size: 14px; } .input-group input, .input-group select { width: 100%; padding: 10px; border: 1px solid #ddd; border-radius: 4px; font-size: 16px; box-sizing: border-box; } .input-group input:focus { border-color: #0073aa; outline: none; } .calc-btn { grid-column: 1 / -1; background-color: #0073aa; color: white; border: none; padding: 15px; font-size: 18px; font-weight: bold; border-radius: 4px; cursor: pointer; margin-top: 10px; transition: background 0.3s; width: 100%; } .calc-btn:hover { background-color: #005177; } .results-section { margin-top: 30px; background: #fff; padding: 20px; border-radius: 6px; border: 1px solid #eee; } .main-result { text-align: center; margin-bottom: 20px; padding-bottom: 20px; border-bottom: 2px solid #f0f0f0; } .main-result h3 { margin: 0 0 10px 0; color: #555; font-size: 18px; } .main-result .amount { font-size: 36px; font-weight: 800; color: #2c3e50; } .breakdown-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; } .breakdown-item { display: flex; justify-content: space-between; font-size: 14px; color: #555; border-bottom: 1px dotted #ccc; padding-bottom: 5px; } .breakdown-item span:last-child { font-weight: bold; color: #333; } .seo-content { margin-top: 40px; line-height: 1.6; color: #333; } .seo-content h2 { color: #2c3e50; margin-top: 30px; } .seo-content h3 { color: #0073aa; font-size: 1.2em; } .seo-content p { margin-bottom: 15px; } .seo-content ul { margin-bottom: 15px; padding-left: 20px; } .error-msg { color: red; font-weight: bold; text-align: center; display: none; margin-top: 10px; }

Mortgage Payment Calculator

30 Years 20 Years 15 Years 10 Years
Please enter valid positive numbers.

Estimated Monthly Payment

$0.00
Principal & Interest $0.00
Property Tax $0.00
Home Insurance $0.00
HOA Fees $0.00
Loan Amount $0.00
Total Interest Cost $0.00

Understanding Your Mortgage Calculation

Using a reliable mortgage payment calculator is the first step in the home-buying journey. It helps you understand exactly how much house you can afford by breaking down your monthly financial obligation into clear components: Principal, Interest, Taxes, and Insurance (often referred to as PITI).

How is Your Monthly Payment Calculated?

Your total monthly payment isn't just the money you borrow. It consists of several layers:

  • Principal: The portion of your payment that goes toward paying down the loan balance.
  • Interest: The cost of borrowing money, paid to the lender. In the early years of a mortgage, a larger portion of your payment goes toward interest.
  • Property Taxes: Assessed by your local government, usually bundled into your monthly payment by the lender.
  • Homeowners Insurance: Protects your property against damage and liability, typically required by lenders.

The Impact of Interest Rates and Down Payments

Even a small difference in your interest rate can significantly affect your monthly payment and the total interest paid over the life of the loan. For example, on a $300,000 loan, a 1% difference in rate can change your monthly payment by hundreds of dollars.

Similarly, a larger down payment reduces your principal loan amount, which lowers your monthly payment and may eliminate the need for Private Mortgage Insurance (PMI).

Why Include HOA Fees?

If you are buying a condo or a home in a planned community, Homeowners Association (HOA) fees are a critical factor. While usually paid directly to the association, lenders include them in your debt-to-income ratio calculations. This calculator allows you to add HOA fees to see the true total cost of ownership per month.

function calculateMortgage() { // 1. 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 = parseFloat(document.getElementById("loanTerm").value); var annualTax = parseFloat(document.getElementById("propertyTax").value); var annualInsurance = parseFloat(document.getElementById("homeInsurance").value); var monthlyHOA = parseFloat(document.getElementById("hoaFees").value); // 2. Validation var errorDiv = document.getElementById("errorMessage"); if (isNaN(homePrice) || isNaN(downPayment) || isNaN(interestRate) || isNaN(loanTermYears) || homePrice < 0 || downPayment < 0 || interestRate < 0) { errorDiv.style.display = "block"; document.getElementById("resultsSection").style.display = "none"; return; } errorDiv.style.display = "none"; // 3. Logic: Principal Loan Amount var loanAmount = homePrice – downPayment; if (loanAmount < 0) loanAmount = 0; // 4. Logic: Monthly P&I Calculation // Formula: M = P [ i(1 + i)^n ] / [ (1 + i)^n – 1 ] var monthlyInterestRate = (interestRate / 100) / 12; var totalPayments = loanTermYears * 12; var monthlyPI = 0; if (interestRate === 0) { monthlyPI = loanAmount / totalPayments; } else { var x = Math.pow(1 + monthlyInterestRate, totalPayments); monthlyPI = (loanAmount * x * monthlyInterestRate) / (x – 1); } if (isNaN(monthlyPI) || !isFinite(monthlyPI)) monthlyPI = 0; // 5. Logic: Other Monthly Costs var monthlyTax = annualTax / 12; var monthlyInsurance = annualInsurance / 12; // HOA is already monthly // 6. Logic: Totals var totalMonthlyPayment = monthlyPI + monthlyTax + monthlyInsurance + monthlyHOA; var totalCostOfLoan = (monthlyPI * totalPayments); var totalInterest = totalCostOfLoan – loanAmount; // 7. Display Results document.getElementById("resultsSection").style.display = "block"; // Formatting helper var formatter = new Intl.NumberFormat('en-US', { style: 'currency', currency: 'USD', minimumFractionDigits: 2 }); document.getElementById("totalMonthlyDisplay").innerText = formatter.format(totalMonthlyPayment); document.getElementById("piDisplay").innerText = formatter.format(monthlyPI); document.getElementById("taxDisplay").innerText = formatter.format(monthlyTax); document.getElementById("insDisplay").innerText = formatter.format(monthlyInsurance); document.getElementById("hoaDisplay").innerText = formatter.format(monthlyHOA); document.getElementById("loanAmountDisplay").innerText = formatter.format(loanAmount); document.getElementById("totalInterestDisplay").innerText = formatter.format(totalInterest); }

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