Pay Calculator Pennsylvania

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Pennsylvania Pay Calculator

Estimate your net pay in Pennsylvania after taxes and deductions.

Your Pay Details

Enter your gross annual salary before taxes.
Weekly (52 pay periods) Bi-Weekly (26 pay periods) Semi-Monthly (24 pay periods) Monthly (12 pay periods)
Number of dependents claimed on federal W-4.
Extra amount to withhold from each paycheck.
Number of dependents claimed on PA-4.
Extra amount to withhold from each paycheck.
Enter as a percentage (e.g., 3.91 for 3.91%). If no local tax, enter 0.
e.g., 401(k) contributions, health insurance premiums.
e.g., Roth IRA contributions, garnishments.

Your Estimated Paycheck

Gross Pay per Period: —
Federal Tax: —
PA State Tax: —
Local Tax: —
Total Deductions: —

Key Assumptions

Pay Period: —
Annual Gross Salary: —
Federal Taxable Income: —
PA Taxable Income: —
How it's Calculated:

Net Pay = Gross Pay – Total Taxes – Total Deductions. Gross Pay is calculated by dividing your Annual Salary by your Pay Frequency. Taxes are estimated based on federal, state, and local tax rates, allowances, and additional withholdings. Pre-tax deductions reduce your taxable income.

Annual Pay Breakdown

Annual Pay Breakdown
Annual Income and Tax Summary
Category Amount
Gross Annual Income
Federal Income Tax
PA State Income Tax
Local Income Tax
Pre-Tax Deductions
Post-Tax Deductions
Net Annual Income

Understanding Your Pennsylvania Paycheck: A Comprehensive Guide

What is a Pennsylvania Pay Calculator?

A pay calculator Pennsylvania is a specialized online tool designed to help individuals estimate their net take-home pay after all mandatory deductions, including federal, state, and local taxes, as well as other common withholdings like health insurance premiums or retirement contributions. Unlike a generic salary calculator, this tool is tailored to the specific tax laws and regulations applicable within the Commonwealth of Pennsylvania, including its unique state income tax structure and potential local income taxes in cities like Philadelphia.

Who should use it? Anyone employed in Pennsylvania, whether full-time, part-time, or contract-based, can benefit from using a pay calculator Pennsylvania. This includes new hires trying to understand their first paycheck, employees considering a job offer, individuals seeking to optimize their tax withholdings, or anyone curious about where their money goes after each payday. It's particularly useful for understanding the impact of different pay frequencies, varying tax allowances, and the effect of deductions on your final take-home amount.

Common misconceptions about paychecks include believing that the gross salary is the amount you'll receive, underestimating the cumulative impact of various taxes, or assuming tax withholdings are fixed regardless of personal circumstances. Many also misunderstand how pre-tax deductions work to lower taxable income, potentially leading to an inaccurate net pay estimation.

Pennsylvania Pay Calculator Formula and Mathematical Explanation

The core of the pay calculator Pennsylvania involves calculating gross pay and then systematically subtracting various taxes and deductions. The process can be broken down as follows:

  1. Calculate Gross Pay per Period: This is the starting point.
    Gross Pay per Period = Annual Salary / Pay Frequency (number of periods per year)
  2. Calculate Taxable Income: This is crucial as taxes are levied on this amount.
    Taxable Income = Gross Pay per Period - Pre-Tax Deductions
  3. Estimate Federal Income Tax: This is complex and depends on allowances, filing status (assumed single for simplicity here), and tax brackets. A simplified approach often uses a percentage based on allowances, but a more accurate calculation involves tax tables. For this calculator, we use a simplified withholding allowance method.
    Federal Taxable Income = (Annual Salary - Pre-Tax Deductions) / Pay Frequency
    Estimated Annual Federal Tax = (Federal Taxable Income * Federal Tax Rate) - (Federal Allowances * Allowance Value)
    Federal Tax Withheld per Period = Estimated Annual Federal Tax / Pay Frequency + Additional Federal Tax
  4. Estimate Pennsylvania State Income Tax: Pennsylvania has a flat income tax rate.
    PA Taxable Income = (Annual Salary - Pre-Tax Deductions) / Pay Frequency
    PA State Tax Withheld per Period = (PA Taxable Income * PA State Tax Rate) + Additional PA State Tax
    (Note: PA does not typically use allowances for withholding in the same way as federal, but the calculator simplifies this based on input.)
  5. Estimate Local Income Tax: This varies significantly by municipality.
    Local Taxable Income = (Annual Salary - Pre-Tax Deductions) / Pay Frequency
    Local Tax Withheld per Period = Local Taxable Income * (Local Tax Rate / 100)
  6. Calculate Total Deductions: Sum of all pre-tax and post-tax deductions.
    Total Deductions per Period = Pre-Tax Deductions + Post-Tax Deductions
  7. Calculate Net Pay per Period: The final take-home amount.
    Net Pay per Period = Gross Pay per Period - Federal Tax Withheld - PA State Tax Withheld - Local Tax Withheld - Post-Tax Deductions

Variables Table

Variables Used in Calculation
Variable Meaning Unit Typical Range
Annual SalaryGross income before any deductions.Currency (e.g., USD)$30,000 – $200,000+
Pay FrequencyNumber of pay periods in a year.Count12, 24, 26, 52
Pre-Tax DeductionsDeductions subtracted before taxes are calculated.Currency (e.g., USD)$0 – $1,000+ per period
Post-Tax DeductionsDeductions subtracted after taxes are calculated.Currency (e.g., USD)$0 – $500+ per period
Federal AllowancesNumber of dependents claimed on W-4.Count0 – 10+
Additional Federal TaxExtra amount withheld federally per period.Currency (e.g., USD)$0 – $100+
PA State Tax RateFlat income tax rate for Pennsylvania.Percentage (%)3.07% (as of 2023)
Local Tax RateIncome tax rate for specific municipalities.Percentage (%)0% – 4%+
Federal Tax Rate (Effective)Estimated effective federal tax rate based on income and allowances.Percentage (%)Varies widely

Practical Examples (Real-World Use Cases)

Example 1: Standard Employee in Pittsburgh

Scenario: Sarah lives and works in Pittsburgh. She earns an annual salary of $70,000 and is paid bi-weekly. She contributes $150 per paycheck to her 401(k) (pre-tax) and has $25 in post-tax deductions for a union fee. She claims 1 allowance on her federal W-4 and 0 additional federal tax. For PA, she claims 1 allowance. Pittsburgh has a local earned income tax (EIT) rate of 3.00% (employer withholding rate). Her employer withholds the standard PA state tax.

Inputs:

  • Annual Salary: $70,000
  • Pay Frequency: Bi-Weekly (26 periods)
  • Federal Allowances: 1
  • Additional Federal Tax: $0
  • PA Allowances: 1
  • Additional PA State Tax: $0
  • Local Tax Rate: 3.00% (Pittsburgh)
  • Pre-Tax Deductions: $150 per period
  • Post-Tax Deductions: $25 per period

Estimated Outputs (Illustrative):

  • Gross Pay per Period: ~$2,692.31 ($70,000 / 26)
  • Taxable Income per Period: ~$2,542.31 ($2,692.31 – $150)
  • Estimated Federal Tax Withheld: ~$350
  • Estimated PA State Tax Withheld: ~$100 (approx. 3.07% of taxable income)
  • Estimated Local Tax Withheld: ~$76 (approx. 3.00% of taxable income)
  • Total Deductions: ~$351 ($150 + $25)
  • Estimated Net Pay per Period: ~$1,815

Financial Interpretation: Sarah takes home approximately $1,815 every two weeks. The significant portion of deductions comes from federal taxes, followed by state and local taxes. Her 401(k) contribution effectively lowers her taxable income, reducing the amount subject to state and local taxes.

Example 2: Single Earner in a Non-Tax Locality

Scenario: John works in Lancaster County, which does not have a local income tax. His annual salary is $55,000, and he is paid weekly. He has $50 deducted weekly for health insurance (pre-tax) and $10 for a gym membership (post-tax). He claims 2 federal allowances and $10 additional federal tax per paycheck. He claims 2 PA allowances.

Inputs:

  • Annual Salary: $55,000
  • Pay Frequency: Weekly (52 periods)
  • Federal Allowances: 2
  • Additional Federal Tax: $10 per period
  • PA Allowances: 2
  • Additional PA State Tax: $0
  • Local Tax Rate: 0.00%
  • Pre-Tax Deductions: $50 per period
  • Post-Tax Deductions: $10 per period

Estimated Outputs (Illustrative):

  • Gross Pay per Period: ~$1,057.69 ($55,000 / 52)
  • Taxable Income per Period: ~$1,007.69 ($1,057.69 – $50)
  • Estimated Federal Tax Withheld: ~$120
  • Estimated PA State Tax Withheld: ~$31 (approx. 3.07% of taxable income)
  • Estimated Local Tax Withheld: $0
  • Total Deductions: ~$110 ($50 + $10)
  • Estimated Net Pay per Period: ~$796

Financial Interpretation: John's weekly take-home pay is around $796. Without local taxes, his net pay is higher than someone in a taxed locality with the same gross salary. The additional $10 federal withholding increases his total federal tax deduction slightly.

How to Use This Pennsylvania Pay Calculator

Using the pay calculator Pennsylvania is straightforward. Follow these steps to get an accurate estimate of your take-home pay:

  1. Enter Your Annual Salary: Input your gross annual income before any taxes or deductions.
  2. Select Pay Frequency: Choose how often you are paid (weekly, bi-weekly, semi-monthly, or monthly). This determines the number of pay periods in a year.
  3. Input Tax Allowances: Enter the number of allowances you claim on your federal W-4 and Pennsylvania PA-4 forms. More allowances generally mean less tax withheld.
  4. Specify Additional Withholding: Add any extra amounts you wish to have withheld from each paycheck for federal and state taxes.
  5. Enter Local Tax Rate: If you work in a municipality with an Earned Income Tax (EIT), enter its rate as a percentage (e.g., 1.00 for 1%). If you don't have local taxes, enter 0.
  6. Add Deductions: Input the amounts for pre-tax deductions (like 401(k) or health insurance premiums) and post-tax deductions (like Roth IRA or garnishments) that are taken out per pay period.
  7. Click 'Calculate Pay': The calculator will instantly display your estimated net pay per period, along with key intermediate values like gross pay, total taxes withheld, and total deductions.

How to read results: The primary result is your estimated Net Pay per Period – the amount you should expect to receive in your bank account. Intermediate results show the breakdown of taxes and deductions, helping you understand where your money is going. Key assumptions highlight the inputs used, ensuring transparency.

Decision-making guidance: Use the results to budget effectively. If your estimated net pay is lower than expected, review your allowances and deductions. Consider adjusting your W-4/PA-4 withholdings if you consistently overpay or underpay taxes. This tool can also help you evaluate job offers by comparing potential net pay across different locations or benefit packages.

Key Factors That Affect Pennsylvania Paycheck Results

Several factors significantly influence your take-home pay in Pennsylvania. Understanding these can help you better manage your finances and tax withholdings:

  1. Gross Salary: This is the foundation. A higher salary generally means higher tax liability, although the effective tax rate may not increase proportionally due to progressive tax brackets (federal) and flat rates (state/local).
  2. Pay Frequency: Being paid weekly versus monthly drastically changes the amount withheld per paycheck. While annual taxes remain the same, the per-period withholding is lower for more frequent paychecks, potentially impacting your cash flow.
  3. Federal Tax Withholding Allowances (W-4): Claiming more allowances reduces the amount of federal income tax withheld each paycheck. However, claiming too many can lead to owing taxes at the end of the year. The IRS updated W-4 forms emphasize accuracy over the old allowance system.
  4. Pennsylvania State Income Tax: PA has a flat 3.07% income tax rate (as of 2023). This rate applies to most types of income, making it relatively straightforward compared to federal taxes, but it's still a significant deduction.
  5. Local Earned Income Taxes (EIT): Many Pennsylvania municipalities levy their own income taxes, ranging from under 1% to over 4%. These are added to state and federal taxes, substantially reducing take-home pay in high-tax areas like Philadelphia.
  6. Pre-Tax Deductions: Contributions to 401(k)s, 403(b)s, traditional IRAs, health savings accounts (HSAs), and health insurance premiums are deducted before income taxes are calculated. This lowers your taxable income, reducing your overall tax burden.
  7. Post-Tax Deductions: Deductions like Roth IRA contributions, union dues (if not pre-tax), or wage garnishments are taken out after taxes. They do not affect your taxable income but reduce your final net pay.
  8. Filing Status: While this calculator simplifies by assuming single filing status for federal calculations, your actual filing status (Single, Married Filing Jointly, etc.) significantly impacts federal tax brackets and standard deductions.

Frequently Asked Questions (FAQ)

Q1: How accurate is this Pennsylvania pay calculator?

A: This calculator provides an estimate based on the information you provide and standard tax formulas. Actual take-home pay can vary due to specific employer payroll systems, nuances in tax law, bonus structures, commission earnings, and other less common deductions or credits.

Q3: What is the difference between pre-tax and post-tax deductions?

A: Pre-tax deductions (like 401(k) contributions) are subtracted from your gross pay before income taxes are calculated, lowering your taxable income. Post-tax deductions (like Roth IRA contributions) are subtracted after taxes have been calculated, directly reducing your net pay without affecting your tax liability.

Q4: Do I need to account for Social Security and Medicare taxes?

A: This calculator focuses on income taxes (Federal, State, Local). Social Security (6.2% up to a limit) and Medicare (1.45%) taxes are also withheld from your paycheck. They are typically calculated separately by payroll systems and are not included in the income tax calculations here but are part of your total deductions.

Q5: How do I adjust my W-4 or PA-4 if my withholdings are wrong?

A: You can submit a new W-4 (federal) or PA-4 (state) form to your employer at any time. Review your pay stubs and use this calculator periodically to ensure your withholdings align with your tax situation. Adjust allowances or additional withholding amounts as needed.

Q6: What is the Pennsylvania Earned Income Tax (EIT)?

A: The EIT is a local tax levied by many municipalities and school districts in Pennsylvania on earned income. Rates vary widely, and it's crucial to know if your locality imposes this tax, as it can significantly impact your net pay. Philadelphia has one of the highest EIT rates.

Q7: Can this calculator handle overtime pay?

A: This calculator primarily estimates based on a consistent annual salary. It does not automatically calculate overtime pay, which is often paid at a higher rate (e.g., 1.5x). For accurate overtime calculations, you would need to adjust the inputs or use a specialized overtime calculator.

Q8: What if I have multiple jobs?

A: If you have multiple jobs, you should adjust your W-4 and PA-4 withholdings to account for the combined income. Using the "Additional Withholding" options on your forms or using the IRS Tax Withholding Estimator is recommended. This calculator can estimate pay for one job at a time.

Q9: Does Pennsylvania have tax credits I should know about?

A: While this calculator focuses on withholding, Pennsylvania offers certain tax credits (e.g., Property Tax/Rent Rebate Program for seniors). These are typically claimed when filing your annual tax return and don't directly affect per-paycheck withholding calculations but can reduce your overall tax liability.

Related Tools and Internal Resources

Disclaimer: This calculator provides an estimate for informational purposes only. Consult with a qualified tax professional for personalized advice.

// — Constants and Initial Values — var PA_STATE_TAX_RATE = 0.0307; // 3.07% as of 2023 var FEDERAL_TAX_ALLOWANCE_VALUE = 4700; // Approximate value per allowance for federal withholding (can vary slightly year to year) // — DOM Element References — var annualSalaryInput = document.getElementById('annualSalary'); var payFrequencyInput = document.getElementById('payFrequency'); var federalAllowancesInput = document.getElementById('federalAllowances'); var additionalFederalTaxInput = document.getElementById('additionalFederalTax'); var stateAllowancesInput = document.getElementById('stateAllowances'); // Note: PA allowances are less direct for withholding calculation than federal var additionalStateTaxInput = document.getElementById('additionalStateTax'); var localTaxRateInput = document.getElementById('localTaxRate'); var preTaxDeductionsInput = document.getElementById('preTaxDeductions'); var postTaxDeductionsInput = document.getElementById('postTaxDeductions'); var primaryResultDiv = document.getElementById('primary-result'); var grossPayDiv = document.getElementById('grossPay'); var federalTaxWithheldDiv = document.getElementById('federalTaxWithheld'); var stateTaxWithheldDiv = document.getElementById('stateTaxWithheld'); var localTaxWithheldDiv = document.getElementById('localTaxWithheld'); var totalDeductionsDiv = document.getElementById('totalDeductions'); var payPeriodDiv = document.getElementById('payPeriod'); var annualGrossDiv = document.getElementById('annualGross'); var federalTaxableIncomeDiv = document.getElementById('federalTaxableIncome'); var stateTaxableIncomeDiv = document.getElementById('stateTaxableIncome'); var annualSummaryTableBody = document.getElementById('annualSummaryTableBody'); var chart; var chartContext; var payBreakdownChartCanvas = document.getElementById('payBreakdownChart'); // — Helper Functions — function formatCurrency(amount) { if (isNaN(amount) || amount === null) return '–'; return '$' + amount.toFixed(2); } function formatPercentage(amount) { if (isNaN(amount) || amount === null) return '–%'; return amount.toFixed(2) + '%'; } function showError(elementId, message) { var errorElement = document.getElementById(elementId + 'Error'); if (errorElement) { errorElement.textContent = message; errorElement.style.display = message ? 'block' : 'none'; } } function clearErrors() { var errorElements = document.querySelectorAll('.error-message'); for (var i = 0; i < errorElements.length; i++) { errorElements[i].textContent = ''; errorElements[i].style.display = 'none'; } } function isValidNumber(value) { return !isNaN(parseFloat(value)) && isFinite(value); } // — Calculation Logic — function calculatePay() { clearErrors(); var annualSalary = parseFloat(annualSalaryInput.value); var payFrequency = parseInt(payFrequencyInput.value); var federalAllowances = parseInt(federalAllowancesInput.value); var additionalFederalTax = parseFloat(additionalFederalTaxInput.value); var stateAllowances = parseInt(stateAllowancesInput.value); // Less direct impact on PA withholding calculation var additionalStateTax = parseFloat(additionalStateTaxInput.value); var localTaxRate = parseFloat(localTaxRateInput.value); var preTaxDeductions = parseFloat(preTaxDeductionsInput.value); var postTaxDeductions = parseFloat(postTaxDeductionsInput.value); // — Input Validation — if (!isValidNumber(annualSalary) || annualSalary < 0) showError('annualSalary', 'Please enter a valid positive annual salary.'); if (!isValidNumber(payFrequency) || payFrequency <= 0) showError('payFrequency', 'Please select a valid pay frequency.'); if (!isValidNumber(federalAllowances) || federalAllowances < 0) showError('federalAllowances', 'Please enter a valid number of federal allowances.'); if (!isValidNumber(additionalFederalTax) || additionalFederalTax < 0) showError('additionalFederalTax', 'Please enter a valid non-negative amount.'); if (!isValidNumber(stateAllowances) || stateAllowances < 0) showError('stateAllowances', 'Please enter a valid number of PA allowances.'); if (!isValidNumber(additionalStateTax) || additionalStateTax < 0) showError('additionalStateTax', 'Please enter a valid non-negative amount.'); if (!isValidNumber(localTaxRate) || localTaxRate 10) showError('localTaxRate', 'Please enter a valid local tax rate (0-10%).'); if (!isValidNumber(preTaxDeductions) || preTaxDeductions < 0) showError('preTaxDeductions', 'Please enter a valid non-negative amount.'); if (!isValidNumber(postTaxDeductions) || postTaxDeductions 0) { return; // Stop calculation if there are validation errors } // — Calculations — var grossPayPerPeriod = annualSalary / payFrequency; var taxableIncomePerPeriod = grossPayPerPeriod – preTaxDeductions; // Simplified Federal Tax Withholding (using a rough effective rate based on allowances) // A more precise calculation would use tax tables and filing status. // This is a simplified estimation for a calculator. var estimatedAnnualFederalTaxableIncome = taxableIncomePerPeriod * payFrequency; // Rough estimate: Assume a base tax rate and subtract allowance value. This is highly simplified. var estimatedAnnualFederalTax = (estimatedAnnualFederalTaxableIncome * 0.15) – (federalAllowances * FEDERAL_TAX_ALLOWANCE_VALUE); // Using 15% as a placeholder effective rate if (estimatedAnnualFederalTax < 0) estimatedAnnualFederalTax = 0; var federalTaxWithheld = (estimatedAnnualFederalTax / payFrequency) + additionalFederalTax; // PA State Tax Withholding var paTaxableIncome = taxableIncomePerPeriod; // PA flat tax applies to income after pre-tax deductions var paStateTaxWithheld = (paTaxableIncome * PA_STATE_TAX_RATE) + additionalStateTax; // Local Tax Withholding var localTaxableIncome = taxableIncomePerPeriod; // Assuming local tax also applies after pre-tax deductions var localTaxWithheld = localTaxableIncome * (localTaxRate / 100); // Total Deductions var totalDeductions = preTaxDeductions + postTaxDeductions + federalTaxWithheld + paStateTaxWithheld + localTaxWithheld; // Net Pay var netPayPerPeriod = grossPayPerPeriod – totalDeductions; if (netPayPerPeriod < 0) netPayPerPeriod = 0; // Net pay cannot be negative // — Update Results Display — primaryResultDiv.textContent = formatCurrency(netPayPerPeriod); grossPayDiv.textContent = 'Gross Pay per Period: ' + formatCurrency(grossPayPerPeriod); federalTaxWithheldDiv.textContent = 'Federal Tax: ' + formatCurrency(federalTaxWithheld); stateTaxWithheldDiv.textContent = 'PA State Tax: ' + formatCurrency(paStateTaxWithheld); localTaxWithheldDiv.textContent = 'Local Tax: ' + formatCurrency(localTaxWithheld); totalDeductionsDiv.textContent = 'Total Deductions: ' + formatCurrency(totalDeductions); payPeriodDiv.textContent = 'Pay Period: ' + payFrequency + ' per year'; annualGrossDiv.textContent = 'Annual Gross Salary: ' + formatCurrency(annualSalary); federalTaxableIncomeDiv.textContent = 'Federal Taxable Income: ' + formatCurrency(estimatedAnnualFederalTaxableIncome); stateTaxableIncomeDiv.textContent = 'PA Taxable Income: ' + formatCurrency(paTaxableIncome * payFrequency); // — Update Annual Summary Table — var annualGross = annualSalary; var annualFederalTax = estimatedAnnualFederalTax; var annualStateTax = paStateTaxWithheld * payFrequency; var annualLocalTax = localTaxWithheld * payFrequency; var annualPreTax = preTaxDeductions * payFrequency; var annualPostTax = postTaxDeductions * payFrequency; var annualNetPay = netPayPerPeriod * payFrequency; annualSummaryTableBody.innerHTML = 'Gross Annual Income' + formatCurrency(annualGross) + '' + 'Federal Income Tax' + formatCurrency(annualFederalTax) + '' + 'PA State Income Tax' + formatCurrency(annualStateTax) + '' + 'Local Income Tax' + formatCurrency(annualLocalTax) + '' + 'Pre-Tax Deductions' + formatCurrency(annualPreTax) + '' + 'Post-Tax Deductions' + formatCurrency(annualPostTax) + '' + 'Net Annual Income' + formatCurrency(annualNetPay) + ''; // — Update Chart — updateChart(annualGross, annualFederalTax, annualStateTax, annualLocalTax, annualPreTax, annualPostTax, annualNetPay); } // — Charting Logic — function updateChart(gross, fedTax, stateTax, localTax, preTax, postTax, netPay) { var chartData = { labels: ['Gross Income', 'Federal Tax', 'PA State Tax', 'Local Tax', 'Pre-Tax Deductions', 'Post-Tax Deductions', 'Net Income'], datasets: [{ label: 'Annual Amounts', data: [gross, fedTax, stateTax, localTax, preTax, postTax, netPay], backgroundColor: [ 'rgba(0, 74, 153, 0.6)', // Primary Blue 'rgba(255, 99, 132, 0.6)', // Red 'rgba(54, 162, 235, 0.6)', // Blue 'rgba(255, 206, 86, 0.6)', // Yellow 'rgba(75, 192, 192, 0.6)', // Green 'rgba(153, 102, 255, 0.6)', // Purple 'rgba(40, 162, 45, 0.6)' // Success Green ], borderColor: [ 'rgba(0, 74, 153, 1)', 'rgba(255, 99, 132, 1)', 'rgba(54, 162, 235, 1)', 'rgba(255, 206, 86, 1)', 'rgba(75, 192, 192, 1)', 'rgba(153, 102, 255, 1)', 'rgba(40, 162, 45, 1)' ], borderWidth: 1 }] }; if (chart) { chart.data = chartData; chart.update(); } else { chartContext = payBreakdownChartCanvas.getContext('2d'); chart = new Chart(chartContext, { type: 'bar', // Changed to bar chart for better comparison data: chartData, options: { responsive: true, maintainAspectRatio: false, scales: { y: { beginAtZero: true, ticks: { callback: function(value) { return formatCurrency(value); } } } }, plugins: { legend: { display: false // Hide legend as labels are on the x-axis }, title: { display: true, text: 'Annual Income and Deduction Breakdown' } } } }); } } // — Form Handling — function resetForm() { annualSalaryInput.value = "; payFrequencyInput.value = '52'; federalAllowancesInput.value = '1'; additionalFederalTaxInput.value = '0'; stateAllowancesInput.value = '1'; additionalStateTaxInput.value = '0'; localTaxRateInput.value = '0'; preTaxDeductionsInput.value = '0'; postTaxDeductionsInput.value = '0'; primaryResultDiv.textContent = '–'; grossPayDiv.textContent = 'Gross Pay per Period: –'; federalTaxWithheldDiv.textContent = 'Federal Tax: –'; stateTaxWithheldDiv.textContent = 'PA State Tax: –'; localTaxWithheldDiv.textContent = 'Local Tax: –'; totalDeductionsDiv.textContent = 'Total Deductions: –'; payPeriodDiv.textContent = 'Pay Period: –'; annualGrossDiv.textContent = 'Annual Gross Salary: –'; federalTaxableIncomeDiv.textContent = 'Federal Taxable Income: –'; stateTaxableIncomeDiv.textContent = 'PA Taxable Income: –'; annualSummaryTableBody.innerHTML = 'Gross Annual Income—' + 'Federal Income Tax—' + 'PA State Income Tax—' + 'Local Income Tax—' + 'Pre-Tax Deductions—' + 'Post-Tax Deductions—' + 'Net Annual Income'; if (chart) { chart.destroy(); chart = null; } clearErrors(); } function copyResults() { var resultsText = "Pennsylvania Paycheck Estimate:\n\n"; resultsText += "Estimated Net Pay per Period: " + primaryResultDiv.textContent + "\n"; resultsText += document.getElementById('grossPay').textContent + "\n"; resultsText += document.getElementById('federalTaxWithheld').textContent + "\n"; resultsText += document.getElementById('stateTaxWithheld').textContent + "\n"; resultsText += document.getElementById('localTaxWithheld').textContent + "\n"; resultsText += document.getElementById('totalDeductions').textContent + "\n\n"; resultsText += "Key Assumptions:\n"; resultsText += document.getElementById('payPeriod').textContent + "\n"; resultsText += document.getElementById('annualGross').textContent + "\n"; resultsText += document.getElementById('federalTaxableIncome').textContent + "\n"; resultsText += document.getElementById('stateTaxableIncome').textContent + "\n"; // Add annual summary table content resultsText += "\nAnnual Summary:\n"; var rows = annualSummaryTableBody.getElementsByTagName('tr'); for (var i = 0; i < rows.length; i++) { var cells = rows[i].getElementsByTagName('td'); if (cells.length === 2) { resultsText += cells[0].textContent + ": " + cells[1].textContent + "\n"; } } try { navigator.clipboard.writeText(resultsText).then(function() { alert('Results copied to clipboard!'); }).catch(function(err) { console.error('Failed to copy results: ', err); alert('Failed to copy results. Please copy manually.'); }); } catch (err) { console.error('Clipboard API not available: ', err); alert('Clipboard API not available. Please copy manually.'); } } // — Initial Calculation & Chart Setup — // Add event listeners for real-time updates annualSalaryInput.addEventListener('input', calculatePay); payFrequencyInput.addEventListener('change', calculatePay); federalAllowancesInput.addEventListener('input', calculatePay); additionalFederalTaxInput.addEventListener('input', calculatePay); stateAllowancesInput.addEventListener('input', calculatePay); additionalStateTaxInput.addEventListener('input', calculatePay); localTaxRateInput.addEventListener('input', calculatePay); preTaxDeductionsInput.addEventListener('input', calculatePay); postTaxDeductionsInput.addEventListener('input', calculatePay); // Initial calculation on page load document.addEventListener('DOMContentLoaded', function() { // Set default values and calculate resetForm(); // Resets to defaults and clears results calculatePay(); // Perform initial calculation with defaults }); // — Chart.js Integration (Minimalistic, no external library) — // NOTE: For a production environment, using a library like Chart.js is highly recommended. // This is a placeholder demonstrating the concept. A full native implementation is complex. // For this exercise, we'll assume Chart.js is available or simulate its basic structure. // If Chart.js is NOT available, this part will fail. // To make this truly pure JS without libraries, you'd need to draw SVG or Canvas manually. // Placeholder for Chart.js – In a real scenario, you'd include the Chart.js library. // For this exercise, we'll assume it's available globally. // If not, the updateChart function would need a complete rewrite using Canvas API or SVG. // Mock Chart object if Chart.js is not loaded (for basic structure) if (typeof Chart === 'undefined') { console.warn("Chart.js library not found. Chart functionality will be limited."); window.Chart = function(ctx, config) { this.ctx = ctx; this.config = config; this.data = config.data; this.options = config.options; this.type = config.type; this.update = function() { console.log("Chart updated (mock)"); }; this.destroy = function() { console.log("Chart destroyed (mock)"); }; // Simulate canvas drawing for basic visualization if needed var canvas = ctx.canvas; var context = ctx; context.fillStyle = 'rgba(0,0,0,0.1)'; context.fillRect(0, 0, canvas.width, canvas.height); context.fillStyle = 'red'; context.font = '16px Arial'; context.textAlign = 'center'; context.fillText('Chart library not loaded', canvas.width / 2, canvas.height / 2); }; }

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