How Your Mississippi Paycheck Is Calculated
Mississippi levies a flat 4.0% state income tax rate on taxable income above the exemption threshold, according to the Mississippi Department of Revenue (DOR). Enacted under the Mississippi Tax Freedom Act of 2022 (HB 531), Mississippi eliminated its legacy 4% and 5% progressive tax tiers in favor of a single 4.0% flat tax rate applied to net taxable income over $10,000.
đĄ How This Calculator Works for Mississippi
Our payroll engine specifically models Mississippi's unique flat tax rules for 2026. Here's exactly how we get your net pay:
- Gross Income: We start with your total annualized wages or hourly rate multiplied by your standard hours.
- Federal Deductions: We calculate federal income tax based on the latest IRS brackets and subtract 7.65% for FICA (6.2% Social Security up to the $176,100 wage base, and 1.45% Medicare).
- State Exemptions: We apply Mississippi's generous state personal exemptions ($6,000 for single filers or $12,000 for married couples) to determine your true taxable state income.
- State Tax: We multiply your remaining taxable income by the flat 4.0% rate.
- Net Pay: We subtract all taxes from your gross pay to show your exact guaranteed take-home amount for the pay period.
Form 89-350: Mississippi Employee Withholding Exemption Certificate
Your employer calculates state income tax withholding using Mississippi Form 89-350. Mississippi offers generous state personal exemptions: $6,000 for single filers, $12,000 for married couples filing jointly, and $1,500 for each eligible dependent child. Accurately filling out Form 89-350 ensures that too much tax isn't withheld from your paycheck during the year.
What Gets Deducted From a Mississippi Paycheck?
Here is the full breakdown of mandatory withholdings on a Mississippi pay stub:
- Federal income tax â withheld based on your W-4 filing status and progressive brackets (10% to 37%). The IRS 2026 inflation adjustments set the standard deduction at $16,100 (single) or $32,200 (joint).
- Mississippi State Income Tax (4.0% flat) â calculated on taxable Mississippi income exceeding Form 89-350 exemptions.
- Social Security (OASDI) â 6.2% on wages up to $176,100.
- Medicare â 1.45% on all wages, plus 0.9% Additional Medicare Tax on earnings over $200,000 (single) / $250,000 (joint).
- Voluntary pre-tax deductions â 401(k) or 403(b) contributions (up to $24,500 in 2026), employer health insurance premiums, HSA, and FSA.
Note: No municipal or county wage taxes exist anywhere in Mississippi. Cities like Jackson, Gulfport, Biloxi, Southaven, and Hattiesburg cannot levy local employee income taxes.
How Much of Your Mississippi Salary Do You Actually Keep?
Most Mississippi workers take home 73â80% of their gross salary, depending on federal bracket and benefit elections. For workers in Jackson Metro (state government, healthcare UMMC, telecommunications), Gulf Coast / Gulfport & Biloxi (defense shipbuilding Huntington Ingalls, gaming/casinos, aerospace NASA Stennis Space Center), North Mississippi / Southaven & Tupelo (logistics, furniture manufacturing, Toyota Blue Springs plant), and Hattiesburg, Mississippi's flat 4.0% rate and $6,000/$12,000 exemptions provide excellent take-home efficiency.
On a $70,000 salary, a Mississippi worker keeps approximately $1,800â$3,500 more per year than a worker earning the same gross in high-tax states. Want to analyze your gross-to-net breakdown? Read our guide on gross pay vs. net pay or see why your paycheck is lower than your salary.
