Bi-weekly (26x per year)
Weekly (52x per year)
Semi-monthly (24x per year)
Monthly (12x per year)
Single
Married Filing Jointly
Single
Married Filing Jointly
Estimated Paycheck Breakdown
Gross Pay:
$0.00
Federal Income Tax:
$0.00
Social Security Tax:
$0.00
Medicare Tax:
$0.00
Mississippi State Tax:
$0.00
Total Pre-tax Deductions:
$0.00
Total Post-tax Deductions:
$0.00
Net Pay:
$0.00
function calculatePaycheck() {
// Get input values
var grossPayPerPeriod = parseFloat(document.getElementById('grossPayPerPeriod').value);
var payFrequency = document.getElementById('payFrequency').value;
var federalFilingStatus = document.getElementById('federalFilingStatus').value;
var msFilingStatus = document.getElementById('msFilingStatus').value;
var numDependentsMS = parseInt(document.getElementById('numDependentsMS').value);
var preTaxDeductionsPerPeriod = parseFloat(document.getElementById('preTaxDeductions').value);
var postTaxDeductionsPerPeriod = parseFloat(document.getElementById('postTaxDeductions').value);
// Validate inputs
if (isNaN(grossPayPerPeriod) || grossPayPerPeriod < 0) {
alert('Please enter a valid Gross Pay per Pay Period.');
return;
}
if (isNaN(numDependentsMS) || numDependentsMS < 0) {
alert('Please enter a valid number of dependents.');
return;
}
if (isNaN(preTaxDeductionsPerPeriod) || preTaxDeductionsPerPeriod < 0) {
alert('Please enter valid Pre-tax Deductions.');
return;
}
if (isNaN(postTaxDeductionsPerPeriod) || postTaxDeductionsPerPeriod < 0) {
alert('Please enter valid Post-tax Deductions.');
return;
}
// Determine annual pay periods
var annualPayPeriods;
switch (payFrequency) {
case 'weekly': annualPayPeriods = 52; break;
case 'bi-weekly': annualPayPeriods = 26; break;
case 'semi-monthly': annualPayPeriods = 24; break;
case 'monthly': annualPayPeriods = 12; break;
default: annualPayPeriods = 26; // Default to bi-weekly
}
var annualGrossPay = grossPayPerPeriod * annualPayPeriods;
var annualPreTaxDeductions = preTaxDeductionsPerPeriod * annualPayPeriods;
// — Federal Tax Calculations (2024 values) —
// FICA Taxes (Social Security & Medicare)
var socialSecurityRate = 0.062;
var socialSecurityWageBase = 168600; // 2024 limit
var medicareRate = 0.0145;
var annualSocialSecurityTaxable = Math.min(annualGrossPay, socialSecurityWageBase);
var annualSocialSecurityTax = annualSocialSecurityTaxable * socialSecurityRate;
var annualMedicareTax = annualGrossPay * medicareRate;
// Federal Income Tax
var federalStandardDeduction;
var federalTaxBrackets;
if (federalFilingStatus === 'single') {
federalStandardDeduction = 14600;
federalTaxBrackets = [
{ rate: 0.10, limit: 11600 },
{ rate: 0.12, limit: 47150 },
{ rate: 0.22, limit: 100525 },
{ rate: 0.24, limit: 191950 },
{ rate: 0.32, limit: 243725 },
{ rate: 0.35, limit: 609350 },
{ rate: 0.37, limit: Infinity }
];
} else { // Married Filing Jointly
federalStandardDeduction = 29200;
federalTaxBrackets = [
{ rate: 0.10, limit: 23200 },
{ rate: 0.12, limit: 94300 },
{ rate: 0.22, limit: 201050 },
{ rate: 0.24, limit: 383900 },
{ rate: 0.32, limit: 487450 },
{ rate: 0.35, limit: 731200 },
{ rate: 0.37, limit: Infinity }
];
}
var federalTaxableIncome = annualGrossPay – annualPreTaxDeductions – federalStandardDeduction;
federalTaxableIncome = Math.max(0, federalTaxableIncome); // Cannot be negative
var annualFederalIncomeTax = 0;
var previousBracketLimit = 0;
for (var i = 0; i previousBracketLimit) {
var taxableInBracket = Math.min(federalTaxableIncome, bracket.limit) – previousBracketLimit;
annualFederalIncomeTax += taxableInBracket * bracket.rate;
}
previousBracketLimit = bracket.limit;
if (federalTaxableIncome 2000) {
// First $2,000 is 0%
if (msTaxableIncome <= 5000) {
annualMsStateTax += (msTaxableIncome – 2000) * 0.04; // 4% on $2,001 – $5,000
} else {
annualMsStateTax += (5000 – 2000) * 0.04; // 4% on $3,000
annualMsStateTax += (msTaxableIncome – 5000) * 0.05; // 5% on over $5,000
}
}
// — Per-Period Breakdown —
var federalIncomeTaxPerPeriod = annualFederalIncomeTax / annualPayPeriods;
var socialSecurityTaxPerPeriod = annualSocialSecurityTax / annualPayPeriods;
var medicareTaxPerPeriod = annualMedicareTax / annualPayPeriods;
var msStateTaxPerPeriod = annualMsStateTax / annualPayPeriods;
var totalDeductionsPerPeriod = federalIncomeTaxPerPeriod + socialSecurityTaxPerPeriod + medicareTaxPerPeriod + msStateTaxPerPeriod + preTaxDeductionsPerPeriod + postTaxDeductionsPerPeriod;
var netPayPerPeriod = grossPayPerPeriod – totalDeductionsPerPeriod;
// Display results
document.getElementById('grossPayOutput').innerText = '$' + grossPayPerPeriod.toFixed(2);
document.getElementById('federalIncomeTaxOutput').innerText = '$' + federalIncomeTaxPerPeriod.toFixed(2);
document.getElementById('socialSecurityTaxOutput').innerText = '$' + socialSecurityTaxPerPeriod.toFixed(2);
document.getElementById('medicareTaxOutput').innerText = '$' + medicareTaxPerPeriod.toFixed(2);
document.getElementById('msStateTaxOutput').innerText = '$' + msStateTaxPerPeriod.toFixed(2);
document.getElementById('totalPreTaxDeductionsOutput').innerText = '$' + preTaxDeductionsPerPeriod.toFixed(2);
document.getElementById('totalPostTaxDeductionsOutput').innerText = '$' + postTaxDeductionsPerPeriod.toFixed(2);
document.getElementById('netPayOutput').innerText = '$' + netPayPerPeriod.toFixed(2);
}
// Run calculation on page load with default values
document.addEventListener('DOMContentLoaded', calculatePaycheck);
Understanding Your Mississippi Paycheck
Navigating your paycheck can sometimes feel like deciphering a complex code. Our Mississippi Paycheck Calculator is designed to help you estimate your net pay by breaking down the various deductions that come out of your gross earnings, specifically tailored for residents of Mississippi.
How Your Paycheck is Calculated
Your net pay (what you actually take home) is determined by subtracting various taxes and deductions from your gross pay. Here's a breakdown of the key components:
1. Gross Pay
This is your total earnings before any deductions. It's calculated based on your hourly wage or annual salary and your pay frequency (e.g., weekly, bi-weekly, monthly).
2. Federal Income Tax
The U.S. federal government levies income tax on your earnings. The amount withheld depends on your gross income, filing status (Single, Married Filing Jointly), and the standard deduction you qualify for. The federal tax system is progressive, meaning higher earners pay a larger percentage of their income in taxes. Our calculator uses the latest 2024 federal tax brackets and standard deductions to provide an accurate estimate.
3. FICA Taxes (Social Security & Medicare)
FICA stands for the Federal Insurance Contributions Act, which funds Social Security and Medicare. These are mandatory payroll taxes:
Social Security: As of 2024, this is 6.2% of your gross wages, up to an annual wage base limit of $168,600.
Medicare: This is 1.45% of all your gross wages, with no income limit.
Your employer also pays an equal amount for both Social Security and Medicare on your behalf.
4. Mississippi State Income Tax
Mississippi has its own state income tax. The state's tax structure is relatively straightforward, with a progressive rate system after accounting for deductions and exemptions. For 2024, Mississippi's income tax rates are:
0% on the first $2,000 of taxable income.
4% on income between $2,001 and $5,000.
5% on income over $5,000.
Mississippi also allows for a standard deduction ($2,300 per taxpayer) and dependent exemptions ($2,100 per dependent), which reduce your taxable income. There are no local income taxes in Mississippi.
5. Deductions
Deductions are amounts subtracted from your pay. They can be categorized as:
Pre-tax Deductions: These are taken out of your gross pay before taxes are calculated, thereby reducing your taxable income. Common examples include contributions to a 401(k) or traditional IRA, health insurance premiums, and Flexible Spending Account (FSA) contributions.
Post-tax Deductions: These are taken out after taxes have been calculated. Examples include Roth 401(k) contributions, union dues, garnishments, or certain life insurance premiums.
Example Calculation
Let's consider an example using the calculator's default values:
Gross Pay per Pay Period: $2,000
Pay Frequency: Bi-weekly (26 pay periods per year)
Federal Filing Status: Single
Mississippi Filing Status: Single
Number of Dependents (MS Tax): 1
Pre-tax Deductions per Period: $100 (e.g., 401k contribution)
Post-tax Deductions per Period: $20 (e.g., Roth IRA contribution)
Annual Gross Pay: $2,000 * 26 = $52,000
Annual Pre-tax Deductions: $100 * 26 = $2,600
1. Federal Income Tax:
Annual Taxable Income (Federal): $52,000 (Gross) – $2,600 (Pre-tax) – $14,600 (Single Standard Deduction) = $34,800
Tax Calculation:
10% on $11,600 = $1,160
12% on ($34,800 – $11,600) = 12% on $23,200 = $2,784
Total Annual Federal Income Tax: $1,160 + $2,784 = $3,944
Per Pay Period: $3,944 / 26 = $151.69
2. FICA Taxes:
Social Security: $52,000 * 0.062 = $3,224 (within wage base limit)
Medicare: $52,000 * 0.0145 = $754
Per Pay Period Social Security: $3,224 / 26 = $124.00
Per Pay Period Medicare: $754 / 26 = $29.00
3. Mississippi State Income Tax:
Annual Taxable Income (MS): $52,000 (Gross) – $2,600 (Pre-tax) – $2,300 (Single Standard Deduction) – $2,100 (Dependent Exemption) = $45,000
Tax Calculation:
0% on first $2,000 = $0
4% on next $3,000 ($2,001-$5,000) = $120
5% on remaining ($45,000 – $5,000) = 5% on $40,000 = $2,000
Total Annual MS State Tax: $0 + $120 + $2,000 = $2,120
This calculator provides an estimate and should not be considered financial or tax advice. For precise figures, consult a tax professional or your employer's payroll department.