Calculate federal and state income taxes, Social Security, and Medicare from your gross pay.
Weekly
Bi-weekly (Every 2 weeks)
Semi-monthly (Twice a month)
Monthly
Estimated Net Pay:
$0.00
Understanding Your Paycheck Deductions
Calculating the taxes and other deductions from your paycheck can seem complex, but it boils down to understanding a few key components. Your gross pay is the total amount you earn before any deductions. Your net pay, often called "take-home pay," is what remains after all mandatory and voluntary deductions. This calculator helps you estimate these deductions to better understand your take-home pay.
Key Deduction Components:
Federal Income Tax: This is a progressive tax levied by the U.S. federal government. The rate you pay depends on your taxable income, filing status, and other factors. The percentage entered here is a simplified estimate for illustrative purposes.
State Income Tax: Similar to federal tax, but levied by your state government. Rates and rules vary significantly by state. Some states have no income tax.
Social Security Tax: This tax funds retirement, disability, and survivor benefits. For 2023, the rate is 6.2% on earnings up to a certain annual limit (the Social Security wage base, $160,200 in 2023). This calculator uses the standard 6.2% without considering the wage base limit for simplicity per paycheck.
Medicare Tax: This tax funds health insurance for seniors and people with disabilities. The rate is 1.45% on all earnings. Higher earners may pay an additional Medicare tax. This calculator uses the standard 1.45%.
How the Calculation Works:
This calculator uses a simplified approach for demonstration. It takes your Gross Pay and applies the percentage rates for each tax directly.
The Total Deductions are the sum of these calculated tax amounts.
Net Pay = Gross Pay – Total Deductions
Important Note: This calculator provides an estimate. Actual paycheck deductions may differ due to factors like pre-tax deductions (e.g., 401(k) contributions, health insurance premiums), tax credits, specific filing status, allowances claimed on W-4, employer-specific taxes, and annual wage base limits for Social Security. For precise figures, always refer to your official pay stub or consult with a payroll specialist or tax professional.
function calculateTaxes() {
var grossPay = parseFloat(document.getElementById("grossPay").value);
var federalRate = parseFloat(document.getElementById("federalRate").value);
var stateRate = parseFloat(document.getElementById("stateRate").value);
var socialSecurityRate = parseFloat(document.getElementById("socialSecurityRate").value);
var medicareRate = parseFloat(document.getElementById("medicareRate").value);
var resultValueElement = document.getElementById("result-value");
var detailsElement = document.getElementById("details");
// Clear previous details
detailsElement.innerHTML = "";
// Validate inputs
if (isNaN(grossPay) || grossPay < 0 ||
isNaN(federalRate) || federalRate < 0 ||
isNaN(stateRate) || stateRate < 0 ||
isNaN(socialSecurityRate) || socialSecurityRate < 0 ||
isNaN(medicareRate) || medicareRate < 0) {
resultValueElement.textContent = "Invalid Input";
detailsElement.innerHTML = "Please enter valid positive numbers for all fields.";
return;
}
// Calculate tax amounts
var federalTax = grossPay * (federalRate / 100);
var stateTax = grossPay * (stateRate / 100);
var socialSecurityTax = grossPay * (socialSecurityRate / 100);
var medicareTax = grossPay * (medicareRate / 100);
// Calculate total deductions and net pay
var totalDeductions = federalTax + stateTax + socialSecurityTax + medicareTax;
var netPay = grossPay – totalDeductions;
// Format results
var formattedNetPay = netPay.toFixed(2);
var formattedGrossPay = grossPay.toFixed(2);
var formattedFederalTax = federalTax.toFixed(2);
var formattedStateTax = stateTax.toFixed(2);
var formattedSocialSecurityTax = socialSecurityTax.toFixed(2);
var formattedMedicareTax = medicareTax.toFixed(2);
var formattedTotalDeductions = totalDeductions.toFixed(2);
// Display results
resultValueElement.textContent = "$" + formattedNetPay;
// Display detailed breakdown
detailsElement.innerHTML = `
Gross Pay: $${formattedGrossPay}
Federal Tax (${federalRate}%): -$${formattedFederalTax}
State Tax (${stateRate}%): -$${formattedStateTax}
Social Security (${socialSecurityRate}%): -$${formattedSocialSecurityTax}
Medicare (${medicareRate}%): -$${formattedMedicareTax}
Total Deductions: -$${formattedTotalDeductions}
`;
}