Backwards Car Payment Calculator

Backwards Car Payment Calculator: Find Your Ideal Loan :root { –primary-color: #004a99; –background-color: #f8f9fa; –card-background: #ffffff; –text-color: #333; –border-color: #ddd; –shadow-color: rgba(0, 0, 0, 0.1); } body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background-color: var(–background-color); color: var(–text-color); margin: 0; padding: 0; line-height: 1.6; } .container { max-width: 1000px; margin: 20px auto; padding: 20px; background-color: var(–card-background); border-radius: 8px; box-shadow: 0 2px 10px var(–shadow-color); } h1, h2, h3 { color: var(–primary-color); text-align: center; } h1 { margin-bottom: 30px; } .loan-calc-container { margin-bottom: 30px; padding: 25px; border: 1px solid var(–border-color); border-radius: 8px; background-color: var(–card-background); box-shadow: 0 1px 5px var(–shadow-color); } .input-group { margin-bottom: 20px; text-align: left; } .input-group label { display: block; margin-bottom: 8px; font-weight: bold; color: var(–primary-color); } .input-group input[type="number"], .input-group input[type="text"], .input-group select { width: calc(100% – 22px); padding: 10px; border: 1px solid var(–border-color); border-radius: 4px; font-size: 1rem; box-sizing: border-box; } .input-group .helper-text { font-size: 0.85em; color: #666; margin-top: 5px; display: block; } .error-message { color: #dc3545; font-size: 0.85em; margin-top: 5px; display: block; min-height: 1.2em; /* Prevent layout shift */ } .button-group { display: flex; justify-content: space-between; margin-top: 25px; flex-wrap: wrap; gap: 10px; } button { padding: 12px 20px; border: none; border-radius: 5px; cursor: pointer; font-size: 1rem; font-weight: bold; transition: background-color 0.3s ease; flex: 1; /* Distribute space */ min-width: 150px; /* Minimum width for buttons */ } .primary-button { background-color: var(–primary-color); color: white; } .primary-button:hover { background-color: #003366; } .secondary-button { background-color: #6c757d; color: white; } .secondary-button:hover { background-color: #5a6268; } #results { margin-top: 30px; padding: 25px; border: 1px solid var(–border-color); border-radius: 8px; background-color: #e9ecef; /* Slightly different background for results */ box-shadow: 0 1px 5px var(–shadow-color); text-align: center; } #results h3 { margin-top: 0; color: var(–primary-color); } .result-item { margin-bottom: 15px; } .result-item strong { display: block; font-size: 1.1em; color: var(–primary-color); } .result-value { font-size: 1.8em; font-weight: bold; color: var(–primary-color); margin-top: 5px; } .intermediate-results { display: flex; justify-content: space-around; flex-wrap: wrap; gap: 15px; margin-top: 20px; padding-top: 20px; border-top: 1px dashed var(–border-color); } .intermediate-value { text-align: center; flex: 1; min-width: 150px; } .intermediate-value strong { display: block; font-size: 1.1em; color: #555; } .intermediate-value .value { font-size: 1.4em; font-weight: bold; color: var(–primary-color); } .formula-explanation { margin-top: 20px; font-size: 0.9em; color: #555; text-align: left; } table { width: 100%; border-collapse: collapse; margin-top: 20px; } th, td { padding: 10px; text-align: right; border: 1px solid var(–border-color); } th { background-color: var(–primary-color); color: white; font-weight: bold; } td { background-color: var(–card-background); } .table-scroll-wrapper { overflow-x: auto; margin-top: 20px; border: 1px solid var(–border-color); border-radius: 4px; } caption { caption-side: top; text-align: left; font-weight: bold; color: var(–primary-color); margin-bottom: 10px; font-size: 1.1em; } canvas { max-width: 100%; height: auto; display: block; margin: 20px auto; border: 1px solid var(–border-color); border-radius: 4px; } .article-section { margin-top: 40px; padding: 30px; background-color: var(–card-background); border-radius: 8px; box-shadow: 0 2px 10px var(–shadow-color); } .article-section h2, .article-section h3 { text-align: left; margin-bottom: 15px; } .article-section p { margin-bottom: 15px; } .faq-item { margin-bottom: 15px; border-bottom: 1px dashed var(–border-color); padding-bottom: 10px; } .faq-item:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; } .faq-item strong { display: block; color: var(–primary-color); margin-bottom: 5px; } .internal-links-list { list-style: none; padding: 0; } .internal-links-list li { margin-bottom: 10px; } .internal-links-list a { color: var(–primary-color); text-decoration: none; font-weight: bold; } .internal-links-list a:hover { text-decoration: underline; } @media (max-width: 768px) { .container { margin: 10px; padding: 15px; } button { width: 100%; min-width: unset; } .button-group { flex-direction: column; gap: 15px; } .intermediate-results { flex-direction: column; gap: 20px; } .intermediate-value { min-width: unset; } }

Backwards Car Payment Calculator

Determine the maximum car price you can afford by working backward from your desired monthly payment.

Calculate Your Maximum Car Price

Enter the maximum amount you can comfortably pay each month.
The annual interest rate for the car loan.
3 Years 4 Years 5 Years 6 Years 7 Years The total duration of the loan in years.
Any amount you plan to pay upfront.

Your Estimated Maximum Car Price

$0
Monthly Interest Rate
0.00%
Total Loan Amount Needed
$0
Total Interest Paid
$0
Formula Used:

This calculator works backward from your desired monthly payment. It first calculates the total loan amount you can afford by using the loan payment formula rearranged to solve for the principal (P): P = M * [1 – (1 + r)^-n] / r, where M is your monthly payment, r is the monthly interest rate, and n is the total number of payments. The maximum car price is then the total loan amount plus your down payment.

Loan Amortization Schedule (Example for Calculated Price)
Payment # Starting Balance Payment Interest Paid Principal Paid Ending Balance
Enter valid inputs to see the schedule.

What is a Backwards Car Payment Calculator?

A backwards car payment calculator, also known as a "maximum car price calculator," is a specialized financial tool designed to help prospective car buyers determine the highest vehicle price they can afford based on their budget. Instead of inputting a car price to see the monthly payment, you input your desired monthly payment, the loan term, and the interest rate. The calculator then works backward to reveal the maximum loan amount and, consequently, the maximum car price you can purchase, factoring in any down payment you plan to make. This approach is incredibly useful for setting realistic expectations and focusing your car search on vehicles within your financial reach, ensuring you don't overextend yourself.

Understanding your affordability upfront is crucial in the car buying process. Many people focus on the monthly payment, which is a vital metric, but without knowing the maximum price that payment represents, it's easy to fall in love with a car that's ultimately out of budget. This backwards calculator flips the script, empowering you to shop with confidence. It helps you avoid the common pitfall of negotiating a price before understanding the full financial picture, making your car buying journey smoother and less stressful. It's an essential tool for smart financial planning in the automotive market.

Backwards Car Payment Calculator Formula and Mathematical Explanation

The core of the backwards car payment calculator relies on the standard loan amortization formula, rearranged to solve for the loan principal (the maximum amount you can borrow). The formula for calculating the present value (PV) of an ordinary annuity, which represents the loan principal, is:

PV = M * [1 – (1 + r)^-n] / r

Where:

  • PV (Present Value) is the maximum loan amount you can afford.
  • M is your desired monthly payment.
  • r is the monthly interest rate (Annual Interest Rate / 12 / 100).
  • n is the total number of payments (Loan Term in Years * 12).

Once the maximum loan amount (PV) is calculated, the maximum car price is determined by adding your down payment:

Maximum Car Price = PV + Down Payment

The calculator also computes intermediate values like the total interest paid over the life of the loan. This is found by subtracting the principal loan amount from the total amount repaid: Total Interest = (M * n) – PV.

For example, if you desire a $400 monthly payment, with a 7.5% annual interest rate (r = 0.075 / 12 = 0.00625), and a 5-year loan term (n = 5 * 12 = 60), the maximum loan amount (PV) would be approximately $19,113. If you also plan a $2,000 down payment, the maximum car price you could afford is $19,113 + $2,000 = $21,113.

Practical Examples (Real-World Use Cases)

The backwards car payment calculator is incredibly versatile for various car-buying scenarios. Here are a few practical examples:

  • Budget-Conscious Buyer: Sarah wants to buy a reliable used car but can only afford a maximum of $300 per month. She has a 6% interest rate offer and wants a 4-year loan term. Using the calculator, she finds she can afford a car priced up to approximately $12,700 (assuming no down payment). This helps her narrow her search to cars in that price range.
  • New Car Aspirant: Mark is eyeing a new sedan with a sticker price of $28,000. He has $5,000 for a down payment and wants to keep his monthly payments around $450. He uses the backwards calculator with his desired payment, a 7% interest rate, and a 6-year term. The calculator shows he can afford a loan amount of about $24,500. Combined with his down payment, this means the $28,000 car is within reach, validating his target.
  • Negotiation Preparation: Before visiting a dealership, David uses the calculator. He knows he can comfortably manage $350 per month for a 5-year loan at 8% interest. The calculator tells him the maximum loan he can take is around $16,700. If he plans a $3,000 down payment, he knows he shouldn't agree to a purchase price exceeding $19,700. This gives him a firm ceiling during negotiations.
  • Evaluating Loan Terms: Emily is approved for a loan at 5% interest and wants to know how different loan terms affect her maximum car price. She inputs her $400 monthly payment and sees that for a 4-year term, she can afford about $17,500, but for a 6-year term, she can afford closer to $24,000. This highlights the trade-off between lower monthly payments and higher total interest paid over a longer period.

These examples demonstrate how the backwards car payment calculator empowers buyers to make informed decisions, aligning their vehicle aspirations with their financial realities. It's a key tool for anyone serious about managing their car finances effectively.

How to Use This Backwards Car Payment Calculator

Using this backwards car payment calculator is straightforward and designed for ease of use. Follow these simple steps:

  1. Enter Your Desired Monthly Payment: In the "Desired Monthly Payment ($)" field, input the maximum amount you are comfortable paying for your car loan each month. Be realistic about your budget.
  2. Input the Annual Interest Rate: Enter the annual interest rate (APR) you expect to pay or have been pre-approved for. This is usually expressed as a percentage (e.g., 7.5%).
  3. Select the Loan Term: Choose the duration of the loan in years from the dropdown menu (e.g., 3, 4, 5, 6, or 7 years). Longer terms mean lower monthly payments but more total interest paid.
  4. Specify Your Down Payment: Enter any amount you plan to pay upfront towards the car's purchase price in the "Down Payment ($)" field. A larger down payment reduces the loan amount needed.
  5. Click "Calculate Maximum Price": Once all fields are populated, click the "Calculate Maximum Price" button.

The calculator will instantly display:

  • Your Estimated Maximum Car Price: The total price of the car you can afford.
  • Total Loan Amount Needed: The principal amount you'll need to borrow.
  • Total Interest Paid: The estimated total interest you'll pay over the loan's life.
  • Monthly Interest Rate: The calculated monthly rate used in the computation.

You can also view a sample amortization schedule and a chart illustrating the loan breakdown. Use the "Reset" button to clear all fields and start over, or "Copy Results" to save your calculated figures.

Key Factors That Affect Backwards Car Payment Calculator Results

Several critical factors significantly influence the outcome of a backwards car payment calculator. Understanding these elements helps you interpret the results accurately and make informed financial decisions:

  • Desired Monthly Payment: This is the primary driver. A higher desired monthly payment will directly result in a higher maximum car price, assuming other factors remain constant. Conversely, a lower payment cap restricts the affordable vehicle price.
  • Annual Interest Rate (APR): The interest rate has a substantial impact. A lower APR allows you to borrow more money for the same monthly payment, thus increasing the maximum car price. Higher interest rates mean more of your payment goes towards interest, reducing the principal you can finance and lowering the affordable car price. This is why securing the lowest possible APR is crucial.
  • Loan Term (Years): The length of the loan term affects both the monthly payment and the total interest paid. A longer term (e.g., 7 years vs. 5 years) will lower your monthly payment for a given car price, allowing you to potentially afford a more expensive vehicle. However, it also means you'll pay significantly more interest over the life of the loan.
  • Down Payment: A larger down payment directly increases the maximum car price you can afford. Since the down payment reduces the amount you need to finance, it effectively boosts your purchasing power without changing the loan parameters themselves. A substantial down payment can make a more expensive car affordable or significantly reduce the loan amount needed for a target vehicle.
  • Loan Fees and Taxes: While not always explicitly included in basic calculators, actual car loan amounts often incorporate taxes, registration fees, and dealer fees. These additional costs increase the total amount financed, potentially reducing the price of the car itself that fits within your payment budget. Always consider these extra expenses.
  • Credit Score: Although not a direct input in this calculator, your credit score heavily influences the interest rate you'll be offered. A higher credit score typically leads to lower interest rates, which, as discussed, increases your affordable car price.

By adjusting these inputs, you can explore different scenarios and find the sweet spot that balances your desire for a particular vehicle with your financial capacity. For instance, increasing your down payment or extending the loan term might make a slightly more expensive car fit your monthly budget, but always weigh the long-term cost implications.

Frequently Asked Questions (FAQ)

Q1: What's the difference between a regular car payment calculator and a backwards one?

A: A regular calculator takes a car price and loan details to show you the monthly payment. A backwards calculator takes your desired monthly payment and loan details to show you the maximum car price you can afford. It's about working from your budget versus working from a car's price tag.

Q2: Can I use this calculator if I have bad credit?

A: While this calculator doesn't directly ask for your credit score, a lower score usually means a higher interest rate. You can input a higher interest rate into the calculator to get a more realistic estimate of the maximum car price you could afford with less favorable loan terms.

Q3: Does the calculator include taxes and fees?

A: This specific calculator focuses on the core loan calculation (price, payment, rate, term). Taxes, registration fees, and other dealer add-ons are not explicitly included in the primary calculation but are factored into the final "Maximum Car Price" by adding them to the calculated loan amount needed. It's wise to budget slightly less for the car's sticker price to accommodate these additional costs.

Q4: How accurate is the "Total Interest Paid" figure?

A: The "Total Interest Paid" is an estimate based on the inputs provided. It assumes a fixed interest rate and consistent payments throughout the loan term. Actual interest paid may vary slightly due to rounding differences or if you make extra payments.

Q5: Should I always aim for the maximum car price the calculator shows?

A: Not necessarily. The calculator shows the maximum you *can* afford based on your inputs. It's often prudent to aim for a car price slightly below the maximum to allow for unexpected expenses, maintain a larger emergency fund, or simply reduce your overall debt burden. Financial comfort is key.

Related Tools and Internal Resources

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var errorSpan = document.getElementById(errorId); var value = parseFloat(input.value); var isValid = true; errorSpan.textContent = "; // Clear previous error if (isRequired && (input.value === " || isNaN(value))) { errorSpan.textContent = 'This field is required.'; isValid = false; } else if (!isNaN(value)) { if (minValue !== null && value maxValue) { errorSpan.textContent = 'Value is too high.'; isValid = false; } } return isValid; } function calculateCarPrice() { var monthlyPayment = parseFloat(monthlyPaymentInput.value); var annualInterestRate = parseFloat(interestRateInput.value); var loanTerm = parseInt(loanTermInput.value); var downPayment = parseFloat(downPaymentInput.value); var monthlyPaymentError = document.getElementById('monthlyPaymentError'); var interestRateError = document.getElementById('interestRateError'); var loanTermError = document.getElementById('loanTermError'); var downPaymentError = document.getElementById('downPaymentError'); var isValid = true; if (!validateInput('monthlyPayment', 'monthlyPaymentError', 0, null)) isValid = false; if (!validateInput('interestRate', 'interestRateError', 0, 100)) isValid = false; if (!validateInput('loanTerm', 'loanTermError', 1, null)) isValid = false; // Min term 1 year if (!validateInput('downPayment', 'downPaymentError', 0, null)) isValid = false; if (!isValid) { maxCarPriceResultDiv.textContent = '$0.00'; totalLoanAmountResultDiv.textContent = '$0.00'; totalInterestResultDiv.textContent = '$0.00'; monthlyInterestRateResultDiv.textContent = '0.00%'; amortizationTableBody.innerHTML = 'Please correct the errors above.'; updateChart([], []); return; } var monthlyInterestRate = annualInterestRate / 100 / 12; var numberOfPayments = loanTerm * 12; var maxLoanAmount = 0; if (monthlyInterestRate > 0) { maxLoanAmount = monthlyPayment * (1 – Math.pow(1 + monthlyInterestRate, -numberOfPayments)) / monthlyInterestRate; } else { maxLoanAmount = monthlyPayment * numberOfPayments; // Simple division if rate is 0 } var maxCarPrice = maxLoanAmount + downPayment; var totalRepaid = monthlyPayment * numberOfPayments; var totalInterest = totalRepaid – maxLoanAmount; maxCarPriceResultDiv.textContent = formatCurrency(maxCarPrice); totalLoanAmountResultDiv.textContent = formatCurrency(maxLoanAmount); totalInterestResultDiv.textContent = formatCurrency(totalInterest); monthlyInterestRateResultDiv.textContent = formatPercent(monthlyInterestRate * 100); generateAmortizationTable(maxLoanAmount, monthlyInterestRate, numberOfPayments, monthlyPayment); updateChart(maxLoanAmount, totalInterest); } function generateAmortizationTable(principal, monthlyRate, termInMonths, monthlyPayment) { amortizationTableBody.innerHTML = "; // Clear previous table var balance = principal; var totalInterestPaid = 0; var totalPrincipalPaid = 0; var paymentNum = 1; // Adjust monthly payment if it's too low to cover interest var calculatedPayment = balance * monthlyRate / (1 – Math.pow(1 + monthlyRate, -termInMonths)); if (isNaN(calculatedPayment) || calculatedPayment === Infinity) calculatedPayment = balance * monthlyRate; // Handle edge case for 0% interest if (monthlyPayment 0) { monthlyPayment = calculatedPayment; // Use calculated payment if user's is too low } else if (monthlyRate === 0) { monthlyPayment = principal / termInMonths; // Simple division for 0% } for (var i = 0; i < termInMonths; i++) { var interestPayment = balance * monthlyRate; var principalPayment = monthlyPayment – interestPayment; // Ensure principal payment doesn't exceed remaining balance on the last payment if (balance – principalPayment < 0) { principalPayment = balance; monthlyPayment = interestPayment + principalPayment; // Adjust final payment } var endingBalance = balance – principalPayment; var row = amortizationTableBody.insertRow(); row.insertCell(0).textContent = paymentNum++; row.insertCell(1).textContent = formatCurrency(balance); row.insertCell(2).textContent = formatCurrency(monthlyPayment); row.insertCell(3).textContent = formatCurrency(interestPayment); row.insertCell(4).textContent = formatCurrency(principalPayment); row.insertCell(5).textContent = formatCurrency(endingBalance); totalInterestPaid += interestPayment; totalPrincipalPaid += principalPayment; balance = endingBalance; if (balance <= 0.01) { // Stop if balance is effectively zero break; } } // Update total interest if calculation differs slightly due to rounding document.getElementById('totalInterestResult').textContent = formatCurrency(totalInterestPaid); } function updateChart(loanAmount, totalInterest) { var ctx = loanChartCanvas.getContext('2d'); if (chartInstance) { chartInstance.destroy(); // Destroy previous chart instance if it exists } var principalValue = loanAmount || 0; var interestValue = totalInterest || 0; var totalValue = principalValue + interestValue; var chartData = { labels: ['Loan Principal', 'Total Interest'], datasets: [{ label: 'Loan Breakdown', data: [principalValue, interestValue], backgroundColor: [ 'rgba(0, 74, 153, 0.7)', // Primary color for principal 'rgba(108, 117, 125, 0.7)' // Secondary color for interest ], borderColor: [ 'rgba(0, 74, 153, 1)', 'rgba(108, 117, 125, 1)' ], borderWidth: 1 }] }; var chartOptions = { responsive: true, maintainAspectRatio: false, plugins: { legend: { position: 'top', }, title: { display: true, text: 'Distribution of Loan Amount vs. Total Interest' } } }; // Simple Pie Chart implementation using Chart.js (if allowed, otherwise need pure canvas/svg) // Since external libraries are forbidden, let's implement a basic pie chart using pure canvas API drawPieChart(ctx, chartData.datasets[0].data, chartData.datasets[0].backgroundColor, chartData.labels); } // Pure Canvas Pie Chart Drawing Function function drawPieChart(ctx, data, colors, labels) { var canvas = ctx.canvas; var centerX = canvas.width / 2; var centerY = canvas.height / 2; var radius = Math.min(centerX, centerY) * 0.8; // Adjust radius for better fit var total = data.reduce(function(acc, val) { return acc + val; }, 0); var startAngle = 0; // Clear canvas ctx.clearRect(0, 0, canvas.width, canvas.height); // Draw slices for (var i = 0; i < data.length; i++) { var sliceAngle = (data[i] / total) * 2 * Math.PI; ctx.beginPath(); ctx.moveTo(centerX, centerY); ctx.arc(centerX, centerY, radius, startAngle, startAngle + sliceAngle); ctx.closePath(); ctx.fillStyle = colors[i]; ctx.fill(); // Draw labels var labelAngle = startAngle + sliceAngle / 2; var labelX = centerX + Math.cos(labelAngle) * (radius * 0.7); // Position label inside slice var labelY = centerY + Math.sin(labelAngle) * (radius * 0.7); ctx.fillStyle = '#000'; // Label color ctx.font = '14px Arial'; ctx.textAlign = 'center'; ctx.textBaseline = 'middle'; ctx.fillText(labels[i] + ': ' + formatCurrency(data[i]), labelX, labelY); startAngle += sliceAngle; } // Draw legend var legendDiv = document.getElementById('chartLegend'); legendDiv.innerHTML = ''; // Clear previous legend legendDiv.style.textAlign = 'center'; legendDiv.style.marginTop = '10px'; for (var i = 0; i < data.length; i++) { var legendItem = document.createElement('span'); legendItem.style.display = 'inline-block'; legendItem.style.margin = '0 10px'; legendItem.style.fontSize = '0.9em'; var colorBox = document.createElement('span'); colorBox.style.display = 'inline-block'; colorBox.style.width = '15px'; colorBox.style.height = '15px'; colorBox.style.backgroundColor = colors[i]; colorBox.style.marginRight = '5px'; colorBox.style.verticalAlign = 'middle'; legendItem.appendChild(colorBox); legendItem.appendChild(document.createTextNode(labels[i])); legendDiv.appendChild(legendItem); } } function resizeCanvas() { var canvas = loanChartCanvas; var container = canvas.parentElement; canvas.width = container.clientWidth; canvas.height = container.clientWidth * 0.75; // Maintain aspect ratio, adjust as needed // Re-draw chart after resize var loanAmount = parseFloat(document.getElementById('totalLoanAmountResult').textContent.replace(/[^0-9.-]+/g,"")); var totalInterest = parseFloat(document.getElementById('totalInterestResult').textContent.replace(/[^0-9.-]+/g,"")); updateChart(loanAmount, totalInterest); } function resetCalculator() { monthlyPaymentInput.value = '400'; interestRateInput.value = '7.5'; loanTermInput.value = '5'; downPaymentInput.value = '2000'; document.getElementById('monthlyPaymentError').textContent = ''; document.getElementById('interestRateError').textContent = ''; document.getElementById('loanTermError').textContent = ''; document.getElementById('downPaymentError').textContent = ''; calculateCarPrice(); // Recalculate with defaults } function copyResults() { var maxPrice = document.getElementById('maxCarPriceResult').textContent; var loanAmount = document.getElementById('totalLoanAmountResult').textContent; var totalInterest = document.getElementById('totalInterestResult').textContent; var monthlyRate = document.getElementById('monthlyInterestRateResult').textContent; var assumptions = "Key Assumptions:\n"; assumptions += "- Desired Monthly Payment: $" + monthlyPaymentInput.value + "\n"; assumptions += "- Annual Interest Rate: " + interestRateInput.value + "%\n"; assumptions += "- Loan Term: " + loanTermInput.value + " years\n"; assumptions += "- Down Payment: $" + downPaymentInput.value + "\n"; var textToCopy = "— Backwards Car Payment Calculator Results —\n\n"; textToCopy += "Maximum Car Price: " + maxPrice + "\n"; textToCopy += "Total Loan Amount Needed: " + loanAmount + "\n"; textToCopy += "Total Interest Paid: " + totalInterest + "\n"; textToCopy += "Monthly Interest Rate: " + monthlyRate + "\n\n"; textToCopy += assumptions; navigator.clipboard.writeText(textToCopy).then(function() { // Optional: Show a confirmation message var copyButton = document.querySelector('button.primary-button[onclick="copyResults()"]'); var originalText = copyButton.textContent; copyButton.textContent = 'Copied!'; setTimeout(function() { copyButton.textContent = originalText; }, 2000); }).catch(function(err) { console.error('Failed to copy text: ', err); // Optional: Show an error message }); } // Initial calculation on page load window.onload = function() { calculateCarPrice(); resizeCanvas(); // Set initial canvas size }; // Recalculate on window resize window.addEventListener('resize', resizeCanvas); // Add event listeners for real-time updates monthlyPaymentInput.addEventListener('input', calculateCarPrice); interestRateInput.addEventListener('input', calculateCarPrice); loanTermInput.addEventListener('change', calculateCarPrice); downPaymentInput.addEventListener('input', calculateCarPrice);

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