Payroll Calculator
Use this calculator to estimate your gross pay, deductions, and net pay for a given pay period. Understanding your paycheck is crucial for personal financial planning.
Payroll Summary
Enter your details and click "Calculate Payroll" to see your summary.
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font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
max-width: 700px;
margin: 20px auto;
padding: 25px;
background: #f9f9f9;
border-radius: 10px;
box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
border: 1px solid #e0e0e0;
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color: #2c3e50;
margin-bottom: 20px;
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.payroll-calculator-container p {
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margin-bottom: 25px;
color: #555;
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.calculator-form label {
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.calculator-form input[type="number"] {
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border-radius: 6px;
font-size: 1em;
width: 100%;
box-sizing: border-box;
transition: border-color 0.3s ease;
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.calculator-form input[type="number"]:focus {
border-color: #007bff;
outline: none;
box-shadow: 0 0 5px rgba(0, 123, 255, 0.2);
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.payroll-calculator-container button {
display: block;
width: 100%;
padding: 14px 20px;
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border-radius: 6px;
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transition: background-color 0.3s ease, transform 0.2s ease;
margin-top: 25px;
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.payroll-calculator-container button:hover {
background-color: #218838;
transform: translateY(-2px);
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.payroll-calculator-container button:active {
transform: translateY(0);
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.calculator-results {
margin-top: 30px;
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.calculator-results h3 {
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margin-bottom: 20px;
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.calculator-results #result p {
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border-radius: 8px;
margin-bottom: 10px;
text-align: left;
color: #333;
font-size: 1.05em;
display: flex;
justify-content: space-between;
align-items: center;
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.calculator-results #result p strong {
color: #2c3e50;
font-weight: 600;
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.calculator-results #result p span {
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.calculator-results #result p:last-child {
margin-bottom: 0;
font-size: 1.15em;
font-weight: bold;
background: #d4edda;
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.error-message {
color: #dc3545;
background-color: #f8d7da;
border: 1px solid #f5c6cb;
padding: 10px;
border-radius: 5px;
margin-top: 15px;
text-align: center;
}
function calculatePayroll() {
var hourlyWage = parseFloat(document.getElementById("hourlyWage").value);
var regularHours = parseFloat(document.getElementById("regularHours").value);
var overtimeHours = parseFloat(document.getElementById("overtimeHours").value);
var bonusAmount = parseFloat(document.getElementById("bonusAmount").value);
var preTaxDeductions = parseFloat(document.getElementById("preTaxDeductions").value);
var federalTaxRate = parseFloat(document.getElementById("federalTaxRate").value);
var stateTaxRate = parseFloat(document.getElementById("stateTaxRate").value);
var socialSecurityRate = parseFloat(document.getElementById("socialSecurityRate").value);
var medicareRate = parseFloat(document.getElementById("medicareRate").value);
// Validate inputs
if (isNaN(hourlyWage) || isNaN(regularHours) || isNaN(overtimeHours) || isNaN(bonusAmount) ||
isNaN(preTaxDeductions) || isNaN(federalTaxRate) || isNaN(stateTaxRate) ||
isNaN(socialSecurityRate) || isNaN(medicareRate)) {
document.getElementById("result").innerHTML = "Please enter valid numbers for all fields.";
return;
}
// Ensure non-negative values
hourlyWage = Math.max(0, hourlyWage);
regularHours = Math.max(0, regularHours);
overtimeHours = Math.max(0, overtimeHours);
bonusAmount = Math.max(0, bonusAmount);
preTaxDeductions = Math.max(0, preTaxDeductions);
federalTaxRate = Math.max(0, federalTaxRate);
stateTaxRate = Math.max(0, stateTaxRate);
socialSecurityRate = Math.max(0, socialSecurityRate);
medicareRate = Math.max(0, medicareRate);
// 1. Calculate Gross Pay
var regularPay = hourlyWage * regularHours;
var overtimePay = hourlyWage * overtimeHours * 1.5; // Assuming 1.5x for overtime
var grossPay = regularPay + overtimePay + bonusAmount;
// 2. Calculate Taxable Gross Pay
var taxableGrossPay = grossPay – preTaxDeductions;
if (taxableGrossPay < 0) {
taxableGrossPay = 0; // Taxable income cannot be negative
}
// 3. Calculate Taxes
var federalTax = taxableGrossPay * (federalTaxRate / 100);
var stateTax = taxableGrossPay * (stateTaxRate / 100);
var socialSecurityTax = taxableGrossPay * (socialSecurityRate / 100);
var medicareTax = taxableGrossPay * (medicareRate / 100);
var totalTaxes = federalTax + stateTax + socialSecurityTax + medicareTax;
// 4. Calculate Net Pay
var netPay = grossPay – preTaxDeductions – totalTaxes;
// Format results to two decimal places
var formatter = new Intl.NumberFormat('en-US', {
style: 'currency',
currency: 'USD',
});
var resultsHtml = `
Gross Pay: ${formatter.format(grossPay)}
Total Pre-Tax Deductions: ${formatter.format(preTaxDeductions)}
Taxable Gross Pay: ${formatter.format(taxableGrossPay)}
Federal Income Tax: ${formatter.format(federalTax)}
State Income Tax: ${formatter.format(stateTax)}
Social Security Tax (Employee): ${formatter.format(socialSecurityTax)}
Medicare Tax (Employee): ${formatter.format(medicareTax)}
Total Taxes: ${formatter.format(totalTaxes)}
Net Pay: ${formatter.format(netPay)}
`;
document.getElementById("result").innerHTML = resultsHtml;
}
Understanding Your Paycheck: A Guide to Payroll Calculation
Payroll calculation is the process of determining an employee's net pay by subtracting various deductions and taxes from their gross earnings. For both employees and employers, understanding how a paycheck is calculated is fundamental to financial transparency and planning.
Key Components of Payroll Calculation:
- Gross Pay: This is your total earnings before any deductions are taken out. It includes your regular wages, overtime pay, bonuses, commissions, and any other forms of compensation.
- Regular Pay: Calculated by multiplying your hourly wage by the number of regular hours worked.
- Overtime Pay: Typically paid at a higher rate (e.g., 1.5 times your regular hourly wage) for hours worked beyond the standard workweek (e.g., 40 hours).
- Bonuses/Commissions: Additional payments based on performance, sales, or other criteria.
- Pre-Tax Deductions: These are amounts subtracted from your gross pay before taxes are calculated. Common pre-tax deductions include contributions to 401(k)s, health insurance premiums, and flexible spending accounts (FSAs). These deductions reduce your taxable income.
- Taxable Gross Pay: This is the amount of your income that is subject to taxes. It's calculated by subtracting your pre-tax deductions from your gross pay.
- Taxes: Several types of taxes are withheld from your paycheck:
- Federal Income Tax: Withheld based on your W-4 form, which indicates your filing status and dependents. The amount varies significantly based on income level and withholding elections.
- State Income Tax: Similar to federal tax, but levied by your state. Not all states have state income tax.
- Social Security Tax (FICA): A federal tax that funds Social Security benefits. The employee portion is typically 6.2% of earnings up to an annual limit.
- Medicare Tax (FICA): Another federal tax that funds Medicare. The employee portion is typically 1.45% of all earnings, with no income limit.
- Post-Tax Deductions: These are deductions taken after taxes have been calculated and withheld. Examples include Roth 401(k) contributions, union dues, garnishments, and some types of life insurance premiums. (Note: This calculator focuses on pre-tax deductions for simplicity, but post-tax deductions are also common.)
- Net Pay: Also known as "take-home pay," this is the amount of money you actually receive after all deductions and taxes have been subtracted from your gross pay.
Why is this important?
Understanding each line item on your pay stub helps you verify accuracy, plan your budget effectively, and make informed decisions about benefits and retirement contributions. It also highlights the impact of taxes and deductions on your overall financial picture.
Example Calculation:
Let's use the default values in the calculator:
- Hourly Wage: $25.00
- Regular Hours: 40
- Overtime Hours: 5
- Bonus: $100.00
- Pre-Tax Deductions: $125.00
- Federal Tax Rate: 15%
- State Tax Rate: 5%
- Social Security Rate: 6.2%
- Medicare Rate: 1.45%
Step-by-step:
- Regular Pay: $25.00 * 40 = $1,000.00
- Overtime Pay: $25.00 * 5 * 1.5 = $187.50
- Gross Pay: $1,000.00 + $187.50 + $100.00 = $1,287.50
- Taxable Gross Pay: $1,287.50 – $125.00 = $1,162.50
- Federal Tax: $1,162.50 * 0.15 = $174.38
- State Tax: $1,162.50 * 0.05 = $58.13
- Social Security Tax: $1,162.50 * 0.062 = $72.08
- Medicare Tax: $1,162.50 * 0.0145 = $16.86
- Total Taxes: $174.38 + $58.13 + $72.08 + $16.86 = $321.45
- Net Pay: $1,287.50 (Gross) – $125.00 (Pre-Tax Deductions) – $321.45 (Total Taxes) = $841.05
This calculator provides a simplified estimate. Actual payroll calculations can be more complex due to varying state and local taxes, specific deduction rules, and annual income limits for certain taxes.