Mortgage Calculator Total Cost – Calculate Your Full Mortgage Expense
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Mortgage Calculator Total Cost
Calculate Your Total Mortgage Cost
Your Mortgage Cost Breakdown
$0.00
Key Assumptions:
Loan Amount: $0.00
Interest Rate: 0.00%
Loan Term: 0 Years
Down Payment: $0.00
The total mortgage cost is the sum of the total principal paid, total interest paid, closing costs, and the sum of all property taxes, homeowner's insurance, and PMI paid over the life of the loan. The monthly payment is calculated using the standard mortgage payment formula, and then extrapolated over the loan term.
What is Mortgage Calculator Total Cost?
The mortgage calculator total cost is a vital financial tool that helps prospective and current homeowners understand the complete financial picture of their home loan. It goes beyond the simple monthly mortgage payment to encompass all expenses associated with financing a property over the entire duration of the loan. This includes not just the principal and interest, but also ancillary costs like closing fees, property taxes, homeowner's insurance premiums, and potentially Private Mortgage Insurance (PMI).
Understanding the total cost is crucial for accurate budgeting, financial planning, and making informed decisions about homeownership. It allows individuals to compare different loan offers, assess affordability, and anticipate the long-term financial commitment involved. Without this comprehensive view, a borrower might underestimate the true expense of their mortgage, leading to potential financial strain.
Who Should Use It?
- First-time homebuyers: To grasp the full scope of expenses involved in obtaining a mortgage and owning a home.
- Homeowners looking to refinance: To compare the total cost of a new loan against their existing one.
- Individuals comparing loan offers: To objectively assess which mortgage product offers the best long-term value.
- Budget-conscious individuals: To ensure they can comfortably afford all associated costs over the loan's lifetime.
Common Misconceptions
- Misconception: The total cost is just the loan amount plus interest. Reality: It includes many other mandatory and optional fees.
- Misconception: All mortgages have the same total cost for the same loan amount and term. Reality: Fees, taxes, insurance, and PMI rates vary significantly, impacting the total cost.
- Misconception: The monthly payment is the only figure that matters. Reality: While important for cash flow, the total cost reveals the true long-term financial burden.
Mortgage Calculator Total Cost Formula and Mathematical Explanation
Calculating the total cost of a mortgage involves several steps, combining loan amortization principles with the summation of all associated expenses over the loan's life.
Step 1: Calculate the Net Loan Amount
This is the amount you are actually borrowing after your down payment.
Net Loan Amount = Loan Amount - Down Payment
Step 2: Calculate the Monthly Principal & Interest (P&I) Payment
This uses the standard annuity formula. Let:
P = Net Loan Amount
r = Monthly interest rate (Annual Rate / 12 / 100)
n = Total number of payments (Loan Term in Years * 12)
The formula for the monthly P&I payment (M) is:
M = P * [ r * (1 + r)^n ] / [ (1 + r)^n – 1]
Step 3: Calculate Total Principal Paid
Over the life of the loan, the total principal paid will equal the Net Loan Amount.
Total Principal Paid = Net Loan Amount
Step 4: Calculate Total Interest Paid
This is the total of all monthly interest payments over the loan term.
Total Interest Paid = (M * n) - P
Step 5: Calculate Total PMI Paid
If PMI is applicable (typically when down payment < 20%), calculate its total cost.
Monthly PMI = (Net Loan Amount * Annual PMI Rate) / 12
Total PMI Paid = Monthly PMI * n (Note: PMI may stop being paid before loan maturity if equity reaches 20-22%)
Step 6: Calculate Total Property Tax Paid
Total Property Tax Paid = Annual Property Tax * Loan Term (Years)
Step 7: Calculate Total Homeowner's Insurance Paid
Total Homeowner's Insurance Paid = Annual Homeowner's Insurance * Loan Term (Years)
Step 8: Calculate Total Fees, Taxes, and Insurance
This sums up the non-principal and non-interest costs.
Total Fees, Taxes & Insurance = Closing Costs + Total Property Tax Paid + Total Homeowner's Insurance Paid + Total PMI Paid
Step 9: Calculate Total Mortgage Cost
This is the ultimate figure representing the entire financial commitment.
Total Mortgage Cost = Total Principal Paid + Total Interest Paid + Total Fees, Taxes & Insurance
Variables Table
Mortgage Total Cost Variables
| Variable |
Meaning |
Unit |
Typical Range |
| Loan Amount |
The total amount borrowed for the property purchase. |
USD ($) |
$50,000 – $1,000,000+ |
| Down Payment |
The initial amount paid upfront by the borrower. |
USD ($) |
0% – 50%+ of Loan Amount |
| Net Loan Amount |
The actual amount financed after the down payment. |
USD ($) |
$0 – $1,000,000+ |
| Annual Interest Rate |
The yearly percentage charged on the loan balance. |
Percent (%) |
2% – 10%+ |
| Loan Term (Years) |
The duration over which the loan is to be repaid. |
Years |
15, 20, 30 years are common |
| Monthly P&I Payment |
The fixed monthly payment covering principal and interest. |
USD ($) |
Varies greatly based on loan details |
| Total Interest Paid |
The sum of all interest paid over the loan term. |
USD ($) |
Can equal or exceed the principal |
| Closing Costs |
One-time fees paid at the closing of the loan. |
USD ($) |
2% – 5% of Loan Amount |
| Annual Property Tax |
Yearly tax levied by local government on the property value. |
USD ($) |
0.5% – 3%+ of Property Value |
| Annual Homeowner's Insurance |
Yearly cost to insure the property against damage/loss. |
USD ($) |
$500 – $3,000+ |
| Annual PMI Rate |
Yearly percentage for Private Mortgage Insurance. |
Percent (%) |
0.25% – 1.5% of Loan Amount |
| Total Mortgage Cost |
The sum of all costs associated with the mortgage over its lifetime. |
USD ($) |
Highly variable |
Practical Examples (Real-World Use Cases)
Example 1: First-Time Homebuyer
Sarah is buying her first home. She's found a property and secured a mortgage.
- Loan Amount: $300,000
- Down Payment: $60,000 (20%)
- Annual Interest Rate: 6.0%
- Loan Term: 30 Years
- Closing Costs: $4,500
- Annual Property Tax: $3,600 ($300/month)
- Annual Homeowner's Insurance: $1,200 ($100/month)
- PMI Rate: 0% (since down payment is 20%)
Calculator Output:
- Total Mortgage Cost: $734,118.72
- Monthly Payment (P&I): $1,439.25
- Total Principal Paid: $240,000.00
- Total Interest Paid: $434,118.72
- Total Fees, Taxes & Insurance: $72,900.00 (Closing Costs $4,500 + Property Tax $108,000 + Insurance $36,000) – *Note: This calculation assumes taxes/insurance are paid monthly and summed over 30 years. The calculator sums annual amounts.*
Financial Interpretation: Sarah will pay $734,118.72 over 30 years for her $300,000 loan. While her P&I is $1,439.25/month, her total monthly housing expense (including taxes and insurance) will be higher. The total interest paid significantly exceeds the principal borrowed, highlighting the long-term cost of financing.
Example 2: Refinancing with Higher Fees
John is refinancing his existing mortgage. He's getting a slightly lower interest rate but higher closing costs.
- Loan Amount: $250,000
- Down Payment: $0 (Refinance, existing equity)
- Annual Interest Rate: 5.0%
- Loan Term: 15 Years
- Closing Costs: $7,000
- Annual Property Tax: $3,000 ($250/month)
- Annual Homeowner's Insurance: $1,000 ($83.33/month)
- PMI Rate: 0% (existing equity)
Calculator Output:
- Total Mortgage Cost: $376,000.00
- Monthly Payment (P&I): $1,909.74
- Total Principal Paid: $250,000.00
- Total Interest Paid: $116,000.00
- Total Fees, Taxes & Insurance: $52,000.00 (Closing Costs $7,000 + Property Tax $45,000 + Insurance $15,000)
Financial Interpretation: John's new 15-year mortgage will cost him $376,000 in total. Although the interest paid ($116,000) is less than in Example 1 due to the shorter term and lower rate, the higher closing costs and the significantly higher monthly P&I payment ($1,909.74 vs $1,439.25) are key considerations. This example shows how closing costs and loan term dramatically influence the total mortgage cost.
How to Use This Mortgage Calculator Total Cost
Our mortgage calculator total cost is designed for simplicity and clarity. Follow these steps to get a comprehensive understanding of your home loan expenses:
- Enter Loan Amount: Input the total price of the home you intend to purchase or the amount you wish to borrow.
- Specify Down Payment: Enter the amount you plan to pay upfront. This affects the net loan amount and potentially PMI.
- Input Interest Rate: Provide the annual interest rate offered by your lender.
- Set Loan Term: Select the duration of the loan in years (e.g., 15, 30).
- Add Closing Costs: Estimate and enter all one-time fees associated with finalizing the loan (e.g., appraisal fees, title insurance, origination fees).
- Enter Annual Property Tax: Input the total property tax you expect to pay per year.
- Enter Annual Homeowner's Insurance: Input the total annual premium for your homeowner's insurance policy.
- Input PMI Rate (if applicable): If your down payment is less than 20%, enter the annual PMI rate as a percentage. If not applicable, leave it at 0 or omit.
- Click 'Calculate Total Cost': The calculator will process your inputs and display the results.
How to Read Results
- Primary Result (Total Mortgage Cost): This is the most important figure, showing the absolute maximum you'll pay over the loan's life.
- Monthly Payment: This typically shows the Principal & Interest (P&I) portion. Remember to add estimated monthly taxes, insurance, and PMI for your true total monthly housing expense.
- Total Principal Paid: The original amount borrowed (after down payment).
- Total Interest Paid: The cost of borrowing the money over time.
- Total Fees, Taxes & Insurance: Sum of all other mandatory costs.
- Key Assumptions: Review these to ensure they match your loan scenario.
Decision-Making Guidance
Use the total cost figure to compare different loan options. A lower monthly payment might seem attractive, but if it leads to a significantly higher total cost over the loan's life (e.g., longer term, higher interest), it might not be the best financial choice. Conversely, a higher monthly payment with a shorter term and lower total interest could be more beneficial long-term if affordable.
Consider how changes in interest rates, loan terms, or down payments impact the mortgage calculator total cost. This tool empowers you to make informed decisions aligned with your financial goals. For more detailed analysis, explore our related mortgage tools.
Key Factors That Affect Mortgage Total Cost
Several elements significantly influence the overall expense of your mortgage. Understanding these factors allows for better financial planning and negotiation.
-
Interest Rate:
This is arguably the most impactful factor. Even a small difference in the annual interest rate can lead to tens or even hundreds of thousands of dollars difference in total interest paid over a 30-year loan. Higher rates mean higher monthly interest payments and a larger total interest cost.
-
Loan Term (Duration):
A longer loan term (e.g., 30 years vs. 15 years) results in lower monthly payments but substantially more interest paid over the life of the loan. Shorter terms mean higher monthly payments but significantly reduce the total interest and overall cost.
-
Loan Amount & Down Payment:
A larger loan amount naturally leads to a higher total cost. A larger down payment reduces the principal borrowed, thus lowering the total interest paid and potentially avoiding PMI, further decreasing the overall cost.
-
Closing Costs:
These one-time fees (origination fees, appraisal, title insurance, etc.) add directly to the total upfront and overall cost. Shopping around for lenders can help minimize these expenses.
-
Property Taxes:
Annual property taxes vary widely by location and property value. They are a mandatory part of homeownership and contribute significantly to the total cost over the loan's lifespan. Higher tax rates mean a higher total mortgage cost.
-
Homeowner's Insurance:
The cost of insuring your home against damage or liability is another ongoing expense. Premiums depend on coverage levels, location, and the property itself. This adds to the total cost over time.
-
Private Mortgage Insurance (PMI):
If you put down less than 20% on a conventional loan, you'll likely pay PMI. This protects the lender but increases your monthly payment and total cost until you reach sufficient equity (typically 20-22%).
-
Inflation and Economic Conditions:
While not directly in the calculation, inflation can erode the purchasing power of future payments, making them feel less burdensome over time. Conversely, rising interest rates in the broader economy can make current mortgage rates seem higher.
Frequently Asked Questions (FAQ)
Q1: What is the difference between monthly payment and total mortgage cost?
The monthly payment (often just P&I) is what you pay each month to service the loan. The total mortgage cost is the sum of all payments (principal, interest, taxes, insurance, fees) over the entire loan term, representing the true overall expense of owning the home via that loan.
Q2: Does the total cost include the down payment?
No, the total mortgage cost typically refers to the sum of all payments made *after* the down payment, including principal, interest, and associated fees. The down payment is an upfront cost separate from the financed amount.
Q3: How accurate are these calculators?
These calculators provide excellent estimates based on standard formulas. However, actual costs can vary due to lender-specific fees, changes in tax rates, insurance premium adjustments, or early payoff scenarios.
Q4: When does PMI stop?
For conventional loans, PMI is typically automatically canceled when your loan-to-value (LTV) ratio reaches 78% (meaning you've paid off 22% of the original principal). You can also request cancellation when the LTV reaches 80%.
Q5: Should I prioritize a lower monthly payment or a lower total cost?
This depends on your financial situation. If cash flow is tight, a lower monthly payment is essential. If you have stable finances and want to minimize long-term expenses, prioritize a lower total cost, often achieved with shorter loan terms.
Q6: Are property taxes and insurance escrowed?
Yes, lenders usually require you to pay property taxes and homeowner's insurance as part of your monthly mortgage payment (escrow). These funds are held by the lender and paid out on your behalf when due. Our calculator sums these annual costs over the loan term.
Q7: What if my interest rate changes during the loan term?
This calculator assumes a fixed-rate mortgage where the interest rate remains constant. For adjustable-rate mortgages (ARMs), the interest rate and monthly payment can change, making the total cost prediction more complex and variable.
Q8: Can I include home maintenance costs in the total cost?
This calculator focuses on the direct costs of the mortgage itself and mandatory associated expenses (taxes, insurance). General home maintenance and repair costs are separate and variable expenses of homeownership not typically included in mortgage total cost calculations.
Related Tools and Internal Resources
function formatCurrency(amount) {
return "$" + amount.toFixed(2).replace(/\d(?=(\d{3})+\.)/g, '$&,');
}
function formatPercent(amount) {
return amount.toFixed(2) + "%";
}
function formatYears(amount) {
return amount + " Years";
}
function validateInput(id, errorId, minValue, maxValue) {
var input = document.getElementById(id);
var errorSpan = document.getElementById(errorId);
var value = parseFloat(input.value);
errorSpan.style.display = 'none'; // Hide error initially
if (isNaN(value)) {
errorSpan.textContent = "Please enter a valid number.";
errorSpan.style.display = 'block';
return false;
}
if (value maxValue) {
errorSpan.textContent = "Value is too high.";
errorSpan.style.display = 'block';
return false;
}
return true;
}
function calculateTotalCost() {
// Input Validation
var isValid = true;
isValid &= validateInput('loanAmount', 'loanAmountError', 0);
isValid &= validateInput('interestRate', 'interestRateError', 0, 100); // Max 100% for rate
isValid &= validateInput('loanTermYears', 'loanTermYearsError', 1, 100); // Min 1 year, max 100 years
isValid &= validateInput('downPayment', 'downPaymentError', 0);
isValid &= validateInput('closingCosts', 'closingCostsError', 0);
isValid &= validateInput('annualPropertyTax', 'annualPropertyTaxError', 0);
isValid &= validateInput('annualHomeInsurance', 'annualHomeInsuranceError', 0);
isValid &= validateInput('pmiRate', 'pmiRateError', 0, 100); // Max 100% for PMI rate
if (!isValid) {
return;
}
var loanAmount = parseFloat(document.getElementById('loanAmount').value);
var interestRate = parseFloat(document.getElementById('interestRate').value);
var loanTermYears = parseInt(document.getElementById('loanTermYears').value);
var downPayment = parseFloat(document.getElementById('downPayment').value);
var closingCosts = parseFloat(document.getElementById('closingCosts').value);
var annualPropertyTax = parseFloat(document.getElementById('annualPropertyTax').value);
var annualHomeInsurance = parseFloat(document.getElementById('annualHomeInsurance').value);
var pmiRate = parseFloat(document.getElementById('pmiRate').value);
var netLoanAmount = loanAmount – downPayment;
if (netLoanAmount 0 && numberOfPayments > 0) {
monthlyPayment = netLoanAmount * (monthlyInterestRate * Math.pow(1 + monthlyInterestRate, numberOfPayments)) / (Math.pow(1 + monthlyInterestRate, numberOfPayments) – 1);
totalInterestPaid = (monthlyPayment * numberOfPayments) – netLoanAmount;
} else if (numberOfPayments > 0) { // 0% interest
monthlyPayment = netLoanAmount / numberOfPayments;
totalInterestPaid = 0;
} else { // 0 years term or invalid
monthlyPayment = netLoanAmount; // Pay off immediately if term is 0
totalInterestPaid = 0;
}
// Calculate Total PMI Paid
var totalPmiPaid = 0;
if (pmiRate > 0 && downPayment < (loanAmount * 0.20)) { // PMI typically applies if down payment < 20%
var monthlyPmi = (netLoanAmount * (pmiRate / 100)) / 12;
totalPmiPaid = monthlyPmi * numberOfPayments;
// Note: In reality, PMI stops when LTV reaches ~78-80%. This is a simplification.
}
// Calculate Total Property Tax and Insurance
var totalPropertyTaxPaid = annualPropertyTax * loanTermYears;
var totalHomeInsurancePaid = annualHomeInsurance * loanTermYears;
// Calculate Total Fees, Taxes & Insurance
var totalFeesTaxesInsurance = closingCosts + totalPropertyTaxPaid + totalHomeInsurancePaid + totalPmiPaid;
// Calculate Total Mortgage Cost
var totalMortgageCost = netLoanAmount + totalInterestPaid + totalFeesTaxesInsurance;
// Display Results
document.getElementById('totalCostResult').textContent = formatCurrency(totalMortgageCost);
document.getElementById('monthlyPaymentResult').textContent = "Monthly Payment: " + formatCurrency(monthlyPayment);
document.getElementById('totalInterestResult').textContent = "Total Interest Paid: " + formatCurrency(totalInterestPaid);
document.getElementById('totalPrincipalResult').textContent = "Total Principal Paid: " + formatCurrency(totalPrincipalPaid);
document.getElementById('totalFeesTaxesInsuranceResult').textContent = "Total Fees, Taxes & Insurance: " + formatCurrency(totalFeesTaxesInsurance);
document.getElementById('loanAmountAssumption').innerHTML = "
Loan Amount: " + formatCurrency(loanAmount);
document.getElementById('interestRateAssumption').innerHTML = "
Interest Rate: " + formatPercent(interestRate);
document.getElementById('loanTermAssumption').innerHTML = "
Loan Term: " + formatYears(loanTermYears);
document.getElementById('downPaymentAssumption').innerHTML = "
Down Payment: " + formatCurrency(downPayment);
updateChart(netLoanAmount, totalInterestPaid, totalFeesTaxesInsurance, closingCosts, totalPropertyTaxPaid, totalHomeInsurancePaid, totalPmiPaid, loanTermYears);
}
function resetCalculator() {
document.getElementById('loanAmount').value = '300000';
document.getElementById('interestRate').value = '5.5';
document.getElementById('loanTermYears').value = '30';
document.getElementById('downPayment').value = '60000';
document.getElementById('closingCosts').value = '5000';
document.getElementById('annualPropertyTax').value = '3600';
document.getElementById('annualHomeInsurance').value = '1200';
document.getElementById('pmiRate').value = '0.5';
// Clear errors
var errorSpans = document.querySelectorAll('.error-message');
for (var i = 0; i < errorSpans.length; i++) {
errorSpans[i].style.display = 'none';
}
calculateTotalCost(); // Recalculate with default values
}
function copyResults() {
var totalCost = document.getElementById('totalCostResult').textContent;
var monthlyPayment = document.getElementById('monthlyPaymentResult').textContent;
var totalInterest = document.getElementById('totalInterestResult').textContent;
var totalPrincipal = document.getElementById('totalPrincipalResult').textContent;
var totalFeesTaxesInsurance = document.getElementById('totalFeesTaxesInsuranceResult').textContent;
var loanAmount = document.getElementById('loanAmountAssumption').textContent;
var interestRate = document.getElementById('interestRateAssumption').textContent;
var loanTerm = document.getElementById('loanTermAssumption').textContent;
var downPayment = document.getElementById('downPaymentAssumption').textContent;
var resultsText = "— Mortgage Total Cost Results —\n\n";
resultsText += "Total Mortgage Cost: " + totalCost + "\n";
resultsText += monthlyPayment + "\n";
resultsText += totalInterest + "\n";
resultsText += totalPrincipal + "\n";
resultsText += totalFeesTaxesInsurance + "\n\n";
resultsText += "— Key Assumptions —\n";
resultsText += loanAmount + "\n";
resultsText += interestRate + "\n";
resultsText += loanTerm + "\n";
resultsText += downPayment + "\n";
// Use a temporary textarea to copy text
var textArea = document.createElement("textarea");
textArea.value = resultsText;
textArea.style.position = "fixed";
textArea.style.left = "-9999px";
document.body.appendChild(textArea);
textArea.focus();
textArea.select();
try {
var successful = document.execCommand('copy');
var msg = successful ? 'Results copied!' : 'Copy failed!';
console.log(msg);
// Optionally show a temporary message to the user
var copyButton = document.querySelector('.btn-copy');
var originalText = copyButton.textContent;
copyButton.textContent = msg;
setTimeout(function() {
copyButton.textContent = originalText;
}, 2000);
} catch (err) {
console.log('Oops, unable to copy');
}
document.body.removeChild(textArea);
}
// Charting Logic
var myChart = null; // Global variable to hold chart instance
function updateChart(principal, interest, feesTaxesInsurance, closingCosts, propertyTax, homeInsurance, pmi, loanTermYears) {
var ctx = document.getElementById('costBreakdownChart').getContext('2d');
// Destroy previous chart instance if it exists
if (myChart) {
myChart.destroy();
}
// Calculate total costs for chart segments
var totalPrincipal = principal;
var totalInterest = interest;
var totalOtherCosts = feesTaxesInsurance; // This already includes closing, tax, insurance, PMI
// Prepare data for chart
var chartData = {
labels: ['Principal', 'Interest', 'Fees, Taxes & Insurance'],
datasets: [{
label: 'Cost Component',
data: [totalPrincipal, totalInterest, totalOtherCosts],
backgroundColor: [
'rgba(0, 74, 153, 0.7)', // Primary Blue for Principal
'rgba(40, 167, 69, 0.7)', // Success Green for Interest
'rgba(255, 193, 7, 0.7)' // Warning Yellow for Fees/Taxes/Insurance
],
borderColor: [
'rgba(0, 74, 153, 1)',
'rgba(40, 167, 69, 1)',
'rgba(255, 193, 7, 1)'
],
borderWidth: 1
}]
};
// Create new chart
myChart = new Chart(ctx, {
type: 'pie', // Changed to Pie chart for better visualization of breakdown
data: chartData,
options: {
responsive: true,
maintainAspectRatio: false, // Allows chart to resize more freely
plugins: {
legend: {
position: 'top',
},
title: {
display: true,
text: 'Total Mortgage Cost Breakdown Over ' + loanTermYears + ' Years'
},
tooltip: {
callbacks: {
label: function(tooltipItem) {
var label = tooltipItem.label || '';
if (label) {
label += ': ';
}
var value = tooltipItem.raw;
label += formatCurrency(value);
return label;
}
}
}
}
}
});
}
// Function to toggle FAQ answers
function toggleFaq(element) {
var answer = element.nextElementSibling;
if (answer.style.display === "block") {
answer.style.display = "none";
} else {
answer.style.display = "block";
}
}
// Initial calculation on page load
document.addEventListener('DOMContentLoaded', function() {
resetCalculator(); // Load with default values and calculate
});