How to Calculate Weighted Average Payment Terms

Calculate Weighted Average Payment Terms – Financial Calculator & Guide body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #333; background-color: #f8f9fa; margin: 0; padding: 0; } .container { max-width: 1000px; margin: 20px auto; padding: 20px; background-color: #fff; box-shadow: 0 2px 10px rgba(0, 0, 150, 0.05); border-radius: 8px; } header { background-color: #004a99; color: white; padding: 20px; text-align: center; border-radius: 8px 8px 0 0; margin-bottom: 20px; } header h1 { margin: 0; font-size: 2.5em; font-weight: 600; } .calculator-section { background-color: #ffffff; padding: 30px; border-radius: 8px; box-shadow: 0 1px 5px rgba(0, 0, 150, 0.03); margin-bottom: 30px; } .calculator-section h2 { color: #004a99; text-align: center; margin-top: 0; margin-bottom: 25px; font-size: 1.8em; } .loan-calc-container { display: flex; flex-direction: column; gap: 20px; } .input-group { display: flex; flex-direction: column; gap: 8px; } .input-group label { font-weight: 600; color: #555; } .input-group input, .input-group select { padding: 12px 15px; border: 1px solid #ccc; border-radius: 5px; font-size: 1em; transition: border-color 0.3s ease; } .input-group input:focus, .input-group select:focus { border-color: #004a99; outline: none; } .input-group small { color: #777; font-size: 0.9em; } .error-message { color: #dc3545; font-size: 0.85em; margin-top: 5px; min-height: 1.2em; /* Reserve space */ } .button-group { display: flex; gap: 10px; margin-top: 20px; justify-content: center; flex-wrap: wrap; } button { padding: 12px 25px; border: none; border-radius: 5px; cursor: pointer; font-size: 1em; font-weight: 500; transition: background-color 0.3s ease, transform 0.2s ease; } button.primary { background-color: #004a99; color: white; } button.primary:hover { background-color: #003366; transform: translateY(-1px); } button.secondary { background-color: #6c757d; color: white; } button.secondary:hover { background-color: #5a6268; transform: translateY(-1px); } .results-container { margin-top: 30px; padding: 25px; background-color: #e9ecef; border-radius: 8px; text-align: center; border: 1px solid #dee2e6; } .results-container h3 { color: #004a99; margin-top: 0; margin-bottom: 15px; font-size: 1.5em; } #main-result { font-size: 2.5em; font-weight: bold; color: #28a745; margin: 10px 0; display: block; background-color: #fff; padding: 15px; border-radius: 5px; border: 2px solid #28a745; } .intermediate-results { display: flex; flex-wrap: wrap; justify-content: center; gap: 20px; margin-top: 20px; } .intermediate-result-item { text-align: center; padding: 15px; background-color: #fff; border-radius: 5px; border: 1px solid #ccc; min-width: 120px; } .intermediate-result-item .value { font-size: 1.5em; font-weight: bold; color: #004a99; display: block; margin-bottom: 5px; } .intermediate-result-item .label { font-size: 0.9em; color: #555; } .formula-explanation { margin-top: 20px; font-size: 0.95em; color: #555; border-top: 1px dashed #ccc; padding-top: 15px; } table { width: 100%; border-collapse: collapse; margin-top: 25px; margin-bottom: 25px; box-shadow: 0 1px 5px rgba(0, 0, 150, 0.03); } th, td { padding: 12px 15px; text-align: left; border-bottom: 1px solid #ddd; } thead { background-color: #004a99; color: white; } th { font-weight: 600; } tbody tr:nth-child(even) { background-color: #f2f2f2; } caption { font-size: 1.1em; font-weight: 600; color: #004a99; margin-bottom: 10px; text-align: left; } .chart-container { margin-top: 25px; padding: 20px; background-color: #fff; border-radius: 8px; box-shadow: 0 1px 5px rgba(0, 0, 150, 0.03); } .chart-container canvas { max-width: 100%; height: auto !important; /* Ensure canvas scales */ } .chart-container p { text-align: center; font-style: italic; color: #777; margin-top: 10px; } .article-section { margin-top: 40px; background-color: #fff; padding: 30px; border-radius: 8px; box-shadow: 0 1px 5px rgba(0, 0, 150, 0.03); } .article-section h2 { color: #004a99; font-size: 2em; margin-bottom: 20px; border-bottom: 2px solid #004a99; padding-bottom: 10px; } .article-section h3 { color: #004a99; font-size: 1.5em; margin-top: 25px; margin-bottom: 15px; } .article-section p, .article-section ul, .article-section ol { margin-bottom: 20px; font-size: 1.05em; } .article-section ul, .article-section ol { padding-left: 25px; } .article-section li { margin-bottom: 10px; } .faq-item { margin-bottom: 15px; padding: 15px; background-color: #f9f9f9; border-radius: 5px; border-left: 3px solid #004a99; } .faq-item h4 { margin: 0 0 8px 0; color: #004a99; font-size: 1.2em; } .faq-item p { margin: 0; font-size: 1em; } .internal-links-section ul { list-style: none; padding: 0; } .internal-links-section li { margin-bottom: 15px; background-color: #e9ecef; padding: 12px 18px; border-radius: 5px; } .internal-links-section a { color: #004a99; font-weight: 600; text-decoration: none; } .internal-links-section a:hover { text-decoration: underline; } .internal-links-section p { font-size: 0.95em; color: #555; margin-top: 5px; } .highlight { background-color: #fff3cd; padding: 2px 5px; border-radius: 3px; } .variable-table th, .variable-table td { text-align: center; } .variable-table th:first-child, .variable-table td:first-child, .variable-table th:nth-child(2), .variable-table td:nth-child(2), .variable-table th:nth-child(3), .variable-table td:nth-child(3) { text-align: left; } footer { text-align: center; padding: 20px; margin-top: 40px; font-size: 0.9em; color: #777; } @media (min-width: 768px) { .container { padding: 30px; } .calculator-section, .article-section { padding: 40px; } .button-group { justify-content: flex-start; } }

Calculate Weighted Average Payment Terms

Determine your business's average payment cycle with precision.

Weighted Average Payment Terms Calculator

Enter the dollar amount for the first payment.
Enter the number of days until Payment 1 is due from the invoice date.
Enter the dollar amount for the second payment.
Enter the number of days until Payment 2 is due from the invoice date.
Enter the dollar amount for the third payment.
Enter the number of days until Payment 3 is due from the invoice date.
Enter the dollar amount for the fourth payment.
Enter the number of days until Payment 4 is due from the invoice date.

Your Results

Total Amount
Weighted Sum
Average Due Days
Formula: Weighted Average Payment Terms = (Σ (Payment Amount * Due Days)) / (Σ Payment Amount)

This calculates the average number of days until payments are due, weighted by the amount of each payment.

Distribution of Payment Amounts vs. Due Days

Payment Term Breakdown
Payment Amount ($) Due Days Weighted Value ($*Days)

What is Weighted Average Payment Terms?

Understanding how to calculate weighted average payment terms is crucial for businesses managing their cash flow and assessing credit risk. Essentially, it provides a more accurate picture of your typical payment cycle than a simple average. It considers both the amount of each payment and the time it takes to receive it, giving a balanced view of when funds are expected to be collected. This metric helps in forecasting, managing working capital, and setting appropriate credit policies.

Who Should Use It?

Any business that extends credit or receives payments over time can benefit from calculating weighted average payment terms. This includes:

  • Suppliers and Vendors: To understand when they are likely to receive payments from their customers, aiding in financial planning and resource allocation.
  • Wholesalers and Distributors: Who often deal with multiple invoices of varying amounts and due dates.
  • Service Providers: Offering payment plans or invoicing for services rendered over time.
  • Financial Analysts: Evaluating the creditworthiness of a company or the efficiency of its collections process.
  • Procurement Departments: To understand the true cost of different payment schedules when negotiating terms with suppliers.

Common Misconceptions

A common misunderstanding is that a simple average of payment due dates is sufficient. However, this ignores the impact of larger payments. For instance, receiving a $10,000 payment in 60 days should carry more weight in your average calculation than a $100 payment due in 30 days. Another misconception is that this metric is only for large corporations; small businesses can gain significant insights into their working capital needs by using this calculation. Finally, it's often confused with Days Sales Outstanding (DSO), though DSO is a broader measure of accounts receivable turnover.

Weighted Average Payment Terms Formula and Mathematical Explanation

The core idea behind calculating weighted average payment terms is to assign a 'weight' to each payment based on its monetary value. Payments with higher dollar amounts have a greater influence on the overall average due date.

The Formula

The formula for weighted average payment terms is:

Weighted Average Payment Terms = Σ (Payment Amountᵢ * Due Daysᵢ) / Σ Payment Amountᵢ

Where:

  • Payment Amountᵢ represents the dollar amount of the i-th payment.
  • Due Daysᵢ represents the number of days until the i-th payment is due from the invoice date.
  • Σ denotes the sum of all items.

Step-by-Step Derivation

  1. Identify all Payments: List each distinct payment you expect to receive, along with its specific dollar amount and the number of days until it is due.
  2. Calculate the Product for Each Payment: For each payment, multiply its amount by the number of days it is due. This gives you the 'weighted value' for that specific payment (Payment Amount * Due Days).
  3. Sum the Weighted Values: Add up all the individual weighted values calculated in step 2. This is the numerator of our formula (Σ (Payment Amountᵢ * Due Daysᵢ)).
  4. Sum the Payment Amounts: Add up the dollar amounts of all the individual payments. This is the denominator of our formula (Σ Payment Amountᵢ), representing the total amount due.
  5. Divide to Find the Average: Divide the sum of the weighted values (from step 3) by the total sum of payment amounts (from step 4). The result is the weighted average payment terms in days.

Variables Explained

Variables Used in the Calculation
Variable Meaning Unit Typical Range
Payment Amount (ᵢ) The monetary value of an individual payment or invoice. USD ($) $0.01 – $1,000,000+ (Industry dependent)
Due Days (ᵢ) The number of days from the invoice date until the payment is contractually due. Days 1 – 365+ (Commonly 30, 60, 90)
Weighted Value (ᵢ) The product of Payment Amount and Due Days, representing the contribution of each payment to the overall weighted average. USD ($) * Days Varies significantly based on inputs
Total Amount The sum of all individual payment amounts. USD ($) Sum of all payment amounts
Weighted Average Payment Terms The average number of days payments are outstanding, weighted by their value. Days Typically similar to common payment terms (e.g., 30-90 days)

Practical Examples (Real-World Use Cases)

Example 1: A Small Business Invoicing Multiple Clients

A freelance graphic designer sends out invoices to three clients:

  • Client A: Invoice Amount = $500, Due in 30 days.
  • Client B: Invoice Amount = $1,200, Due in 45 days.
  • Client C: Invoice Amount = $800, Due in 60 days.

Calculation:

  • Total Amount = $500 + $1,200 + $800 = $2,500
  • Weighted Sum = (500 * 30) + (1200 * 45) + (800 * 60) = 15,000 + 54,000 + 48,000 = $117,000
  • Weighted Average Payment Terms = $117,000 / $2,500 = 46.8 days

Interpretation: While the due dates range from 30 to 60 days, the weighted average of 46.8 days indicates that the business can expect to wait, on average, about 47 days for its payments. This is significantly influenced by the larger $1,200 invoice due in 45 days.

Example 2: A Manufacturing Company with Staggered Payments

A manufacturer provides custom machinery and arranges payment in four installments:

  • Payment 1: $10,000 (Upon order), Due in 0 days.
  • Payment 2: $25,000 (Upon shipment), Due in 60 days.
  • Payment 3: $30,000 (Upon installation), Due in 90 days.
  • Payment 4: $15,000 (Upon acceptance), Due in 120 days.

Calculation:

  • Total Amount = $10,000 + $25,000 + $30,000 + $15,000 = $80,000
  • Weighted Sum = (10000 * 0) + (25000 * 60) + (30000 * 90) + (15000 * 120) = 0 + 1,500,000 + 2,700,000 + 1,800,000 = $6,000,000
  • Weighted Average Payment Terms = $6,000,000 / $80,000 = 75 days

Interpretation: The company has staggered payments across a longer period. The weighted average of 75 days reflects the distribution, showing that despite an immediate payment, the larger, later installments pull the average significantly towards the 90-120 day marks. This information is vital for managing production financing and cash flow forecasting.

How to Use This Weighted Average Payment Terms Calculator

Our calculator simplifies the process of determining your business's average payment cycle. Follow these steps for accurate results:

  1. Enter Payment Details: Input the dollar amount and the number of days until due for each payment you need to analyze. You can add up to four distinct payment entries.
  2. Click 'Calculate': Once your payment data is entered, click the "Calculate" button. The calculator will instantly process the figures.
  3. Review the Results:
    • Main Result (Average Due Days): This is the highlighted primary number, representing your weighted average payment terms in days.
    • Intermediate Values: You'll see the Total Amount ($) and the Weighted Sum ($*Days) used in the calculation.
    • Payment Breakdown Table: This table provides a clear view of each payment's contribution to the total and its weighted value.
    • Chart: The dynamic chart visually represents the distribution of your payment amounts against their due dates, offering a quick overview of your payment structure.
  4. Understand Key Assumptions: The calculator assumes that the 'Due Days' are measured consistently from the invoice date. It doesn't account for grace periods, early payment discounts, or late payment penalties unless explicitly built into your payment amounts and days.
  5. Make Informed Decisions: Use the calculated average to forecast cash flow, assess the efficiency of your credit terms, negotiate better payment schedules with suppliers, or inform your working capital management strategies.
  6. Reset and Recalculate: If you need to analyze a different set of payments, click the "Reset" button to clear all fields and start fresh. The "Copy Results" button allows you to easily transfer the calculated data.

Key Factors That Affect Weighted Average Payment Terms Results

Several elements can influence the outcome of your weighted average payment terms calculation and its interpretation:

  1. Payment Amount Distribution: This is the most direct factor. If a large portion of your revenue comes from a few high-value invoices with longer payment terms, your weighted average will be significantly higher than if payments are smaller and more frequent. Conversely, many small invoices due quickly will lower the average.
  2. Due Dates (Payment Terms): The specific number of days set for each payment is critical. Longer payment terms naturally extend the average, especially when tied to larger amounts. Negotiating shorter terms on substantial payments can dramatically reduce the weighted average.
  3. Invoice Timing and Seasonality: If you have significant revenue spikes during certain periods (e.g., holiday seasons, project milestones) with associated payment terms, this can skew the average depending on when these periods occur relative to your analysis timeframe.
  4. Discount Structures (e.g., 2/10 Net 30): While not directly in this basic calculation, early payment discounts influence behavior. If many customers take discounts for paying early (e.g., within 10 days instead of 30), your *actual* average collection period might be shorter than the weighted average calculated based on the net terms alone.
  5. Customer Payment Behavior: The calculation assumes payments are made on the due date. However, real-world behavior varies. Consistent late payments from key clients will lengthen your actual collection period beyond what the weighted average suggests. This metric helps set expectations, but tracking actual vs. expected can reveal issues.
  6. Contractual Payment Schedules: For large projects or subscriptions, phased payments outlined in contracts (like the manufacturing example) directly dictate the amounts and timings, heavily influencing the weighted average. Understanding these schedules is key to accurate calculation.
  7. Foreign Exchange Rates (for international transactions): If dealing with international clients, currency fluctuations can affect the USD equivalent of payments, and different banking systems might introduce slight delays, subtly impacting the effective due days.
  8. Credit Policies and Enforcement: The stringency of your credit policy and how effectively you enforce payment terms can indirectly affect the outcome. A lenient policy might lead to longer actual payment times, making the weighted average a less reliable predictor of actual cash inflow timing.

Frequently Asked Questions (FAQ)

Q1: How is this different from a simple average of payment terms?

A simple average adds up all the due days and divides by the number of payments. The weighted average multiplies each due day by its corresponding payment amount before summing and dividing, giving more significance to larger payments.

Q2: Can I use this calculator for payables (what I owe)?

Yes, you can reverse the logic. Enter the amounts you owe and their respective due dates to calculate your average weighted payment terms to your suppliers. This helps in managing outgoing cash flow.

Q3: What if I have more than four payment terms?

Our calculator supports up to four entries for simplicity. For more complex scenarios, you would extend the formula: Sum (Amount * Days) for all payments / Sum (Amount) for all payments. You can perform these calculations manually or adapt the calculator's logic.

Q4: Does this account for early payment discounts?

Not directly. The calculator uses the stated 'Due Days'. If customers consistently take early payment discounts (e.g., pay in 10 days instead of 30), your actual average collection period will be shorter than this calculated weighted average based on net terms.

Q5: How often should I calculate my weighted average payment terms?

It's beneficial to calculate this regularly, perhaps monthly or quarterly, especially if your client base or payment structures change. This ensures your cash flow projections remain accurate.

Q6: What is a "good" weighted average payment term?

There's no universal "good" number. It depends heavily on your industry, business model, and customer base. The key is consistency and alignment with your financial goals and tolerance for risk. Compare it to your competitors or industry benchmarks if available.

Q7: How does this relate to Days Sales Outstanding (DSO)?

DSO is a broader metric measuring the average number of days it takes to collect revenue for *all* outstanding invoices. Weighted average payment terms focus specifically on the terms offered/agreed upon, providing insight into the structure of those payment obligations.

Q8: Can inflation affect the value of my future payments?

Yes, inflation erodes the purchasing power of future money. While this calculator focuses purely on the timing of payments, a comprehensive financial analysis would consider the time value of money, especially for long payment terms, using concepts like Net Present Value (NPV).

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var payment1AmountInput = document.getElementById('payment1Amount'); var payment1DaysInput = document.getElementById('payment1Days'); var payment2AmountInput = document.getElementById('payment2Amount'); var payment2DaysInput = document.getElementById('payment2Days'); var payment3AmountInput = document.getElementById('payment3Amount'); var payment3DaysInput = document.getElementById('payment3Days'); var payment4AmountInput = document.getElementById('payment4Amount'); var payment4DaysInput = document.getElementById('payment4Days'); var payment1AmountError = document.getElementById('payment1AmountError'); var payment1DaysError = document.getElementById('payment1DaysError'); var payment2AmountError = document.getElementById('payment2AmountError'); var payment2DaysError = document.getElementById('payment2DaysError'); var payment3AmountError = document.getElementById('payment3AmountError'); var payment3DaysError = document.getElementById('payment3DaysError'); var payment4AmountError = document.getElementById('payment4AmountError'); var payment4DaysError = document.getElementById('payment4DaysError'); var mainResultDisplay = document.getElementById('main-result'); var totalAmountDisplay = document.getElementById('totalAmount'); var weightedSumDisplay = document.getElementById('weightedSum'); var averageDaysDisplay = document.getElementById('averageDays'); var paymentTableBody = document.getElementById('paymentTableBody'); var chart; var chartContext = document.getElementById('paymentTermsChart').getContext('2d'); function isValidNumber(value) { return !isNaN(parseFloat(value)) && isFinite(value); } function updateChart(payments) { if (chart) { chart.destroy(); } var labels = []; var amounts = []; var dueDays = []; var weightedValues = []; for (var i = 0; i < payments.length; i++) { labels.push('Payment ' + (i + 1)); amounts.push(payments[i].amount); dueDays.push(payments[i].days); weightedValues.push(payments[i].amount * payments[i].days); } if (labels.length === 0) { chartContext.clearRect(0, 0, chartContext.canvas.width, chartContext.canvas.height); return; } chart = new Chart(chartContext, { type: 'bar', data: { labels: labels, datasets: [{ label: 'Payment Amount ($)', data: amounts, backgroundColor: 'rgba(0, 74, 153, 0.6)', borderColor: 'rgba(0, 74, 153, 1)', borderWidth: 1, yAxisID: 'y-axis-amount' }, { label: 'Due Days', data: dueDays, backgroundColor: 'rgba(40, 167, 69, 0.6)', borderColor: 'rgba(40, 167, 69, 1)', borderWidth: 1, yAxisID: 'y-axis-days' }] }, options: { scales: { x: { title: { display: true, text: 'Payment Number' } }, 'y-axis-amount': { type: 'linear', position: 'left', title: { display: true, text: 'Amount ($)' }, ticks: { beginAtZero: true } }, 'y-axis-days': { type: 'linear', position: 'right', title: { display: true, text: 'Days' }, grid: { drawOnChartArea: false, }, ticks: { beginAtZero: true } } }, responsive: true, maintainAspectRatio: false } }); } function updateTable(payments) { paymentTableBody.innerHTML = ''; // Clear previous rows var totalAmount = 0; var weightedSum = 0; for (var i = 0; i < payments.length; i++) { var payment = payments[i]; var weightedValue = payment.amount * payment.days; var row = paymentTableBody.insertRow(); row.insertCell(0).textContent = 'Payment ' + (i + 1); row.insertCell(1).textContent = payment.amount.toFixed(2); row.insertCell(2).textContent = payment.days; row.insertCell(3).textContent = weightedValue.toFixed(2); totalAmount += payment.amount; weightedSum += weightedValue; } return { totalAmount: totalAmount, weightedSum: weightedSum }; } function calculateWeightedAverage() { var p1Amt = parseFloat(payment1AmountInput.value); var p1Days = parseInt(payment1DaysInput.value); var p2Amt = parseFloat(payment2AmountInput.value); var p2Days = parseInt(payment2DaysInput.value); var p3Amt = parseFloat(payment3AmountInput.value); var p3Days = parseInt(payment3DaysInput.value); var p4Amt = parseFloat(payment4AmountInput.value); var p4Days = parseInt(payment4DaysInput.value); // Reset errors payment1AmountError.textContent = ''; payment1DaysError.textContent = ''; payment2AmountError.textContent = ''; payment2DaysError.textContent = ''; payment3AmountError.textContent = ''; payment3DaysError.textContent = ''; payment4AmountError.textContent = ''; payment4DaysError.textContent = ''; var validInputs = true; var payments = []; if (!isValidNumber(p1Amt) || p1Amt < 0) { payment1AmountError.textContent = 'Please enter a valid non-negative number.'; validInputs = false; } else { payments.push({ amount: p1Amt, days: p1Days }); } if (!isValidNumber(p1Days) || p1Days < 0) { payment1DaysError.textContent = 'Please enter a valid non-negative integer.'; validInputs = false; } if (!isValidNumber(p2Amt) || p2Amt < 0) { payment2AmountError.textContent = 'Please enter a valid non-negative number.'; validInputs = false; } else { payments.push({ amount: p2Amt, days: p2Days }); } if (!isValidNumber(p2Days) || p2Days < 0) { payment2DaysError.textContent = 'Please enter a valid non-negative integer.'; validInputs = false; } if (!isValidNumber(p3Amt) || p3Amt < 0) { payment3AmountError.textContent = 'Please enter a valid non-negative number.'; validInputs = false; } else { payments.push({ amount: p3Amt, days: p3Days }); } if (!isValidNumber(p3Days) || p3Days < 0) { payment3DaysError.textContent = 'Please enter a valid non-negative integer.'; validInputs = false; } if (!isValidNumber(p4Amt) || p4Amt < 0) { payment4AmountError.textContent = 'Please enter a valid non-negative number.'; validInputs = false; } else { payments.push({ amount: p4Amt, days: p4Days }); } if (!isValidNumber(p4Days) || p4Days 0; }); if (activePayments.length === 0) { mainResultDisplay.textContent = '–'; totalAmountDisplay.textContent = '0.00'; weightedSumDisplay.textContent = '0.00'; averageDaysDisplay.textContent = '–'; paymentTableBody.innerHTML = 'No active payments entered.'; updateChart([]); return; } var tableData = updateTable(activePayments); var totalAmount = tableData.totalAmount; var weightedSum = tableData.weightedSum; totalAmountDisplay.textContent = totalAmount.toFixed(2); weightedSumDisplay.textContent = weightedSum.toFixed(2); var weightedAverage = 0; if (totalAmount > 0) { weightedAverage = weightedSum / totalAmount; averageDaysDisplay.textContent = weightedAverage.toFixed(1); mainResultDisplay.textContent = weightedAverage.toFixed(1) + ' Days'; } else { averageDaysDisplay.textContent = '–'; mainResultDisplay.textContent = '–'; } updateChart(activePayments); } function resetCalculator() { payment1AmountInput.value = "1000"; payment1DaysInput.value = "30"; payment2AmountInput.value = "1500"; payment2DaysInput.value = "60"; payment3AmountInput.value = "2000"; payment3DaysInput.value = "90"; payment4AmountInput.value = "2500"; payment4DaysInput.value = "120"; // Clear errors payment1AmountError.textContent = "; payment1DaysError.textContent = "; payment2AmountError.textContent = "; payment2DaysError.textContent = "; payment3AmountError.textContent = "; payment3DaysError.textContent = "; payment4AmountError.textContent = "; payment4DaysError.textContent = "; calculateWeightedAverage(); // Recalculate with defaults } function copyResults() { var mainResult = mainResultDisplay.textContent; var totalAmount = totalAmountDisplay.textContent; var weightedSum = weightedSumDisplay.textContent; var averageDays = averageDaysDisplay.textContent; if (mainResult === '–') { alert("No results to copy yet."); return; } var tableRows = paymentTableBody.querySelectorAll('tr'); var tableContent = "Payment\tAmount ($)\tDue Days\tWeighted Value ($*Days)\n"; tableRows.forEach(function(row) { var cells = row.cells; tableContent += cells[0].textContent + '\t' + cells[1].textContent + '\t' + cells[2].textContent + '\t' + cells[3].textContent + '\n'; }); var copyText = "Weighted Average Payment Terms Calculator Results:\n\n" + "Key Results:\n" + "- Weighted Average Payment Terms: " + mainResult + "\n" + "- Total Amount: $" + totalAmount + "\n" + "- Weighted Sum: $" + weightedSum + "\n" + "- Average Due Days (Intermediate): " + averageDays + " Days\n\n" + "Payment Breakdown:\n" + tableContent + "\n" + "Formula: (Sum of (Payment Amount * Due Days)) / (Sum of Payment Amount)"; // Use a textarea to copy, compatible across browsers var textArea = document.createElement("textarea"); textArea.value = copyText; 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 to clipboard!' : 'Copying failed.'; alert(msg); } catch (err) { alert('Failed to copy results. Please copy manually.'); } document.body.removeChild(textArea); } // Initial calculation on page load document.addEventListener('DOMContentLoaded', function() { // Add event listeners for real-time updates var inputs = document.querySelectorAll('.loan-calc-container input'); for (var i = 0; i < inputs.length; i++) { inputs[i].addEventListener('input', calculateWeightedAverage); } calculateWeightedAverage(); // Perform initial calculation }); // Initialize Chart.js if available (though we are using native canvas here) // Ensure Chart.js library is included if using it for more complex charts. // For this native implementation, we don't need an external library. // The provided script uses native Canvas API directly.

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