Missouri Paycheck Calculator

Missouri Paycheck Calculator

Weekly Bi-Weekly Semi-Monthly</ Monthly

Federal Withholding

Single Married Filing Jointly

Missouri State Withholding

Single Married Filing Jointly

Deductions

Your Paycheck Summary:

Enter your details and click "Calculate Paycheck" to see your results.

Understanding Your Missouri Paycheck

Navigating your paycheck can sometimes feel like deciphering a secret code. This Missouri Paycheck Calculator is designed to help you understand how your gross earnings are reduced by federal and state taxes, as well as other deductions, to arrive at your net pay.

How Your Paycheck is Calculated

Your net pay (the amount 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 includes your regular wages, salary, commissions, bonuses, and any other taxable income.

2. Pre-Tax Deductions

These are deductions taken from your gross pay before taxes are calculated. Common examples include contributions to a 401(k) or 403(b) retirement plan, health insurance premiums, and Flexible Spending Account (FSA) contributions. Pre-tax deductions reduce your taxable income, meaning you pay less in federal and state income taxes.

3. Federal Taxes

  • Federal Income Tax: This is withheld based on the information you provide on your W-4 form (filing status, dependents, other income/deductions, and extra withholding). The calculator uses a simplified method based on 2024 tax brackets and standard deductions to estimate this amount.
  • Social Security (FICA – SS): This is a flat 6.2% of your gross pay, up to an annual wage base limit ($168,600 for 2024). This tax funds retirement, disability, and survivor benefits.
  • Medicare (FICA – Med): This is a flat 1.45% of all your gross pay, with no wage limit. It funds hospital insurance for the elderly and disabled. An additional 0.9% Medicare tax applies to wages over $200,000 (single) or $250,000 (married filing jointly).

4. Missouri State Income Tax

Missouri has a progressive income tax system. For 2024, the state's tax structure includes a 0% rate on the first $1,000 of taxable income, with a top rate of 4.8% on income exceeding that threshold, after accounting for deductions and exemptions. Your MO filing status and the number of exemptions you claim on your MO W-4 form (Form MO W-4) determine your state tax withholding.

  • MO Standard Deduction (2024): $14,600 for single filers, $29,200 for married filing jointly.
  • MO Exemptions (2024): Each exemption claimed reduces your taxable income by $2,100.

5. Post-Tax Deductions

These deductions are taken from your pay after all applicable taxes have been calculated and withheld. Examples include Roth 401(k) contributions, union dues, garnishments, or certain charitable contributions.

6. Net Pay

This is your final take-home pay after all federal taxes, state taxes, and pre-tax/post-tax deductions have been subtracted from your gross pay.

Example Calculation

Let's consider an example for a bi-weekly paid employee in Missouri:

  • Gross Pay per Pay Period: $2,000
  • Pay Frequency: Bi-Weekly (26 pay periods/year)
  • Federal Filing Status: Single, 0 Dependents, 0 Other Income/Deductions, 0 Extra Withholding
  • MO Filing Status: Single, 1 Exemption, 0 Extra Withholding
  • Pre-Tax Deductions: $100 per pay period (e.g., health insurance)
  • Post-Tax Deductions: $20 per pay period (e.g., union dues)

Using the calculator with these inputs, you would see a detailed breakdown of federal income tax, FICA taxes, Missouri state tax, and finally, your net pay.

This calculator provides an estimate. For precise figures, always consult your employer's payroll department or a tax professional.

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margin-top: 25px; margin-bottom: 10px; border-bottom: none; padding-bottom: 0; } .article-content h4 { color: #4a627a; font-size: 1.1em; margin-top: 20px; margin-bottom: 8px; } .article-content p, .article-content ul { font-size: 1em; margin-bottom: 10px; } .article-content ul { list-style-type: disc; margin-left: 20px; padding-left: 0; } .article-content li { margin-bottom: 5px; } @media (max-width: 768px) { .input-group { flex: 1 1 100%; } } function calculatePaycheck() { // Get input values var grossPay = parseFloat(document.getElementById('grossPay').value); var payFrequency = parseInt(document.getElementById('payFrequency').value); var federalFilingStatus = document.getElementById('federalFilingStatus').value; var federalDependents = parseInt(document.getElementById('federalDependents').value); var federalOtherIncome = parseFloat(document.getElementById('federalOtherIncome').value); var federalDeductions = parseFloat(document.getElementById('federalDeductions').value); var federalExtraWithholding = parseFloat(document.getElementById('federalExtraWithholding').value); var moFilingStatus = document.getElementById('moFilingStatus').value; var moExemptions = parseInt(document.getElementById('moExemptions').value); var moExtraWithholding = parseFloat(document.getElementById('moExtraWithholding').value); var preTaxDeductions = parseFloat(document.getElementById('preTaxDeductions').value); var postTaxDeductions = parseFloat(document.getElementById('postTaxDeductions').value); // Validate inputs if (isNaN(grossPay) || grossPay < 0 || isNaN(federalDependents) || federalDependents < 0 || isNaN(federalOtherIncome) || federalOtherIncome < 0 || isNaN(federalDeductions) || federalDeductions < 0 || isNaN(federalExtraWithholding) || federalExtraWithholding < 0 || isNaN(moExemptions) || moExemptions < 0 || isNaN(moExtraWithholding) || moExtraWithholding < 0 || isNaN(preTaxDeductions) || preTaxDeductions < 0 || isNaN(postTaxDeductions) || postTaxDeductions 200000) { annualAdditionalMedicareTax = (annualGrossPay – 200000) * additionalMedicareRate; } else if (federalFilingStatus === 'married' && annualGrossPay > 250000) { annualAdditionalMedicareTax = (annualGrossPay – 250000) * additionalMedicareRate; } var totalAnnualFicaTax = annualSocialSecurityTax + annualMedicareTax + annualAdditionalMedicareTax; var perPeriodFicaTax = totalAnnualFicaTax / payPeriodsPerYear; // — Federal Income Tax (Simplified 2024) — var federalStandardDeduction; if (federalFilingStatus === 'single') { federalStandardDeduction = 14600; // 2024 } else { // married federalStandardDeduction = 29200; // 2024 } // Simplified approach for W-4 Step 3 (Dependents) and Step 4 (Other Adjustments) var federalCredits = federalDependents * 2000; // Assuming $2000 per qualifying child for simplicity var federalOtherIncomeAdjustment = federalOtherIncome; var federalOtherDeductionsAdjustment = federalDeductions; var federalTaxableIncome = annualTaxableGross + federalOtherIncomeAdjustment – federalStandardDeduction – federalOtherDeductionsAdjustment; federalTaxableIncome = Math.max(0, federalTaxableIncome); // Cannot be negative var annualFederalIncomeTax = 0; if (federalFilingStatus === 'single') { if (federalTaxableIncome <= 11600) { annualFederalIncomeTax = federalTaxableIncome * 0.10; } else if (federalTaxableIncome <= 47150) { annualFederalIncomeTax = 11600 * 0.10 + (federalTaxableIncome – 11600) * 0.12; } else if (federalTaxableIncome <= 100525) { annualFederalIncomeTax = 11600 * 0.10 + (47150 – 11600) * 0.12 + (federalTaxableIncome – 47150) * 0.22; } else if (federalTaxableIncome <= 191950) { annualFederalIncomeTax = 11600 * 0.10 + (47150 – 11600) * 0.12 + (100525 – 47150) * 0.22 + (federalTaxableIncome – 100525) * 0.24; } else if (federalTaxableIncome <= 243725) { annualFederalIncomeTax = 11600 * 0.10 + (47150 – 11600) * 0.12 + (100525 – 47150) * 0.22 + (191950 – 100525) * 0.24 + (federalTaxableIncome – 191950) * 0.32; } else if (federalTaxableIncome <= 609350) { annualFederalIncomeTax = 11600 * 0.10 + (47150 – 11600) * 0.12 + (100525 – 47150) * 0.22 + (191950 – 100525) * 0.24 + (243725 – 191950) * 0.32 + (federalTaxableIncome – 243725) * 0.35; } else { annualFederalIncomeTax = 11600 * 0.10 + (47150 – 11600) * 0.12 + (100525 – 47150) * 0.22 + (191950 – 100525) * 0.24 + (243725 – 191950) * 0.32 + (609350 – 243725) * 0.35 + (federalTaxableIncome – 609350) * 0.37; } } else { // Married Filing Jointly if (federalTaxableIncome <= 23200) { annualFederalIncomeTax = federalTaxableIncome * 0.10; } else if (federalTaxableIncome <= 94300) { annualFederalIncomeTax = 23200 * 0.10 + (federalTaxableIncome – 23200) * 0.12; } else if (federalTaxableIncome <= 201050) { annualFederalIncomeTax = 23200 * 0.10 + (94300 – 23200) * 0.12 + (federalTaxableIncome – 94300) * 0.22; } else if (federalTaxableIncome <= 383900) { annualFederalIncomeTax = 23200 * 0.10 + (94300 – 23200) * 0.12 + (201050 – 94300) * 0.22 + (federalTaxableIncome – 201050) * 0.24; } else if (federalTaxableIncome <= 487450) { annualFederalIncomeTax = 23200 * 0.10 + (94300 – 23200) * 0.12 + (201050 – 94300) * 0.22 + (383900 – 201050) * 0.24 + (federalTaxableIncome – 383900) * 0.32; } else if (federalTaxableIncome 1000) { annualMoIncomeTax = (moTaxableIncome – 1000) * 0.048; // 2024 simplified rate } annualMoIncomeTax = Math.max(0, annualMoIncomeTax); // Tax cannot be negative var perPeriodMoIncomeTax = (annualMoIncomeTax / payPeriodsPerYear) + moExtraWithholding; perPeriodMoIncomeTax = Math.max(0, perPeriodMoIncomeTax); // Ensure it's not negative after extra withholding // — Total Deductions and Net Pay — var totalDeductions = preTaxDeductions + postTaxDeductions + perPeriodFicaTax + perPeriodFederalIncomeTax + perPeriodMoIncomeTax; var netPay = grossPay – totalDeductions; // Display results var resultHtml = '

Pay Period: $' + grossPay.toFixed(2) + '

'; resultHtml += 'Gross Pay: $' + grossPay.toFixed(2) + "; resultHtml += 'Pre-Tax Deductions: $' + preTaxDeductions.toFixed(2) + "; resultHtml += 'Federal Income Tax: $' + perPeriodFederalIncomeTax.toFixed(2) + "; resultHtml += 'Social Security Tax: $' + (annualSocialSecurityTax / payPeriodsPerYear).toFixed(2) + "; resultHtml += 'Medicare Tax: $' + ((annualMedicareTax + annualAdditionalMedicareTax) / payPeriodsPerYear).toFixed(2) + "; resultHtml += 'Missouri State Income Tax: $' + perPeriodMoIncomeTax.toFixed(2) + "; resultHtml += 'Post-Tax Deductions: $' + postTaxDeductions.toFixed(2) + "; resultHtml += 'Total Deductions: $' + totalDeductions.toFixed(2) + "; resultHtml += 'Net Pay: $' + netPay.toFixed(2) + ''; document.getElementById('result').innerHTML = resultHtml; }

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