Mississippi paycheck calculator

The official method, step by step

• Pay is annualized, then reduced by the Form W-4 amount for your filing status ($8,600, or $12,900 if married filing jointly) unless the Step 2 box is checked.
• Federal income tax comes from the IRS 2026 Annual Percentage Method table for that status, divided back to one paycheck.
• Social security is 6.2% of wages until the year's wages reach $184,500.
• Medicare is 1.45% of all wages, plus 0.9% on wages over $200,000 in the year.
• A pre-tax 401(k) lowers federal income tax wages, not social security or Medicare wages.
• Mississippi income tax uses the Department of Revenue's annualized method from Pub 89-700: annual pay less the exemptions claimed on Form 89-350 and the standard deduction ($2,300 single, $3,400 head of family, $4,600 married with a spouse not employed), with 0% on the first $10,000 of taxable income and 4% above it, divided over the pay periods.
• Mississippi's printed wage-bracket tables use the same rates in steps, so a table lookup can differ by a few cents.

What this leaves out

• Benefits, garnishments and other after-tax deductions
• W-4 Step 3 credits and Step 4 entries (the pay stub generator handles them)

Sources: Mississippi Department of Revenue, Pub 89-700 (revised 1/13/2026), Withholding Income Tax Tables and Employer Instructions: exemptions and standard deductions, 2026 rates (0% on the first $10,000, 4.0% above), annualized computation; IRS Publication 15-T (2026), Federal Income Tax Withholding Methods: Worksheet 1A and the Annual Percentage Method Tables; IRS Publication 15 (2026), (Circular E) Employer's Tax Guide: social security and Medicare tax, Additional Medicare Tax.