Mississippi State Income Tax Guide (2026)

Mississippi has been writing rate-cut bills every two years since 2016. Each version has been more ambitious than the last. The 2016 cut shaved off the 3% bracket. The 2022 reform (HB 1 of 2022, signed by Tate Reeves in April 2022) collapsed the prior progressive structure to a flat 5% top and committed to phase it down: 4.7% in 2024, 4.4% in 2025, 4.0% in 2026. The full schedule held. The 2025 reform (HB 1 of 2025, also Reeves) wrote the next chapter — instead of stopping at 4%, the plan is to keep cutting, contingent on revenue performance, until the rate hits zero. The political consensus is durable. The technical question is whether the state's revenue base supports it.

What a typical filer actually pays: take a $75,000 single Ingalls Pascagoula welder. MS taxable income, after the $2,300 standard deduction, is approximately $72,700. The first $10,000 of that taxable income is at 0%, the remaining $62,700 is at 4% = $2,508. Effective state rate on gross: about 3.3%. The headline says 4%; the math says 3.3% because the zero-bracket on the first $10K functions as a small additional exemption layered on top of the standard deduction. At higher incomes the effective rate creeps up toward the headline 4% but never quite reaches it because the zero-bracket persists.

Mississippi does NOT allow the federal-tax deduction that Alabama, Louisiana, Missouri, and Montana grant. The legislature's choice was: lower top rate vs. federal-tax deduction. Mississippi picked the lower rate combined with the elimination path. The trade looks roughly fair on a static basis — a $100K MS filer pays about $3,500 in state tax (no federal deduction); a $100K Alabama filer pays about $3,900 (with federal deduction); a $100K Louisiana filer pays about $2,200 (with federal deduction at 3% flat). Louisiana wins on a static basis; Alabama and Mississippi are close. The dynamic question is whether MS completes the elimination plan — if it does, MS becomes the clearly most favorable state in the South for working professionals.

No Mississippi city or county imposes a local income tax. Jackson, Oxford, Tupelo, Hattiesburg, Pascagoula, Gulfport, Biloxi — pure state + federal + FICA, full stop. Mississippi funds local government through property tax (moderate at 0.79% effective) and a local sales tax option, not paychecks. Compared to Pennsylvania (with the Local EIT chasing residents) or Ohio (600+ municipal income taxes), Mississippi is suspiciously simple in a good way.

Three Mississippians most readers can identify with. Find the one closest to you. If none match, the calculator at the top is for you.

If you ask a Mississippian what their biggest household line item is, they'll tell you about insurance — not income tax, especially within 30 miles of the Gulf. Mississippi's effective property tax rate averages 0.79%. A $250,000 home in Jackson's Belhaven pays roughly $2,000/year. A $300,000 home in Madison or Ridgeland pays roughly $2,400. A $250,000 home in Oxford pays roughly $2,200. Numbers are in line with the regional average and well below Texas or Florida coastal counties.

Gulf Coast insurance is the unsung Mississippi cost. Hurricane Katrina (2005) reset the entire insurance market for coastal Mississippi. Jackson County (Pascagoula, Gautier, Ocean Springs), Harrison County (Biloxi, Gulfport, Long Beach), and Hancock County (Bay St. Louis, Waveland) all face genuine annual hurricane exposure. Private-market windstorm premiums on a $250,000 coastal home run $3,500–$5,500/year, plus separate flood through NFIP at $1,200–$2,500/year. Inland Mississippi — Jackson, Oxford, Tupelo, Starkville, Hattiesburg — pays a fraction. Where you live in Mississippi decides whether the tax structure is a clear win or a wash with insurance.

Sales tax stack: combined averages 7.07% — Jackson 7%, Oxford 7%, Pascagoula 7.25%. The 2025 news: HB 1 cut grocery sales tax from 7% to 5% effective July 2025, the first cut to grocery tax in decades. A family spending $1,000/month on groceries saves $240/year. The Mississippi Homestead Exemption is among the most generous in the country — up to $300 of taxes due is credited (about 15% off a $2,000 bill). Residents 65+ get an additional Special Homestead Exemption that can fully eliminate property tax on the first $75,000 of assessed value. File once with your county tax collector. Frequently unclaimed.

Skip both "Tennessee is paradise" (oversold) and "Alabama is identical" (the federal-tax deduction in AL changes the math). Run it for your specific situation:

If you earn $75K+ and you're not doing most of these, you're leaving real money on the table. None of this is exotic. None of it requires a fancy accountant. Most of it requires 30 minutes of setup once a year and discipline the rest of the year.

Mississippi is fundamentally one of the most favorable states in the country for retirees and competitive for working professionals at every income level. The 4% flat rate, the trigger-based elimination plan, the full retirement-income exemption, the homestead exemption, the reduced grocery sales tax, and the lowest cost of living in the country stack into a tax structure that beats most of the South for moderate-income filers. The hard part isn't the tax structure. It's the regional career-market depth (high-comp white-collar work outside Jackson / Oxford / the Coast / Tupelo is genuinely thin) and the Gulf Coast hurricane-insurance picture for coastal homeowners.

Run your numbers in the calculator at the top of this page. Mississippi's calc engine reflects the 2026 flat 4% rate above the $10,000 zero-bracket threshold. Most professionals see 3.0%–3.7% effective state rate at typical comp ($60K–$200K) — the zero-bracket pulls early-income tax down noticeably. That's competitive with Louisiana (after factoring in LA's federal-tax deduction) and better than Alabama at high incomes.

If you own a home, file the Homestead Exemption application with your county tax collector — it's free, it takes 15 minutes, and the credit reduces property tax by up to $300/year for as long as you own the home. If you're 65+, file the Special Homestead Exemption to substantially reduce or eliminate property tax on the first $75,000 of assessed value. If you're a coastal homeowner, refresh insurance quotes annually — the post-Katrina market has continued to evolve and what your neighbor pays is not what you'll pay.

Max your 401(k). At Mississippi's 4% top + 22%–24% federal, every $1,000 pre-tax saves about $260. A maxed $24,500 saves about $6,300 in combined federal + Mississippi tax. Mississippi conforms to federal pre-tax treatment cleanly. If you're approaching retirement, the full retirement-income exemption at 59½+ is the structural prize — plan Roth conversions in your 50s if you anticipate large IRA balances, capture the exemption forever. If you're a coastal homeowner, build the windstorm-deductible buffer in a high-yield savings account; it's a common gap in financial-emergency planning.