State playbook - Mississippi

Matchbook, tuned for Mississippi payroll, programs, and hurricane-belt risk.

Mississippi charges a flat 4.4% income tax in 2025, stepping down to 4.0% in 2026 with a multi-year path toward zero, and runs a $14,000 SUI wage base. The Children's Promise Act, Advantage Jobs, and Rural Economic Development credits are underused employer levers, and a Gulf Coast hurricane plus tornado-belt geography make IRC Section 139 a core design constraint.

What Matchbook ships for Mississippi Tax profile
Tax mechanics

Payroll tax in Mississippi

State income tax

Applies

Mississippi imposes a flat 4.4% personal income tax in 2025, scheduled to drop to 4.0% in 2026 under HB 1, with further step-downs targeting full repeal over the next decade. Employee pre-tax savings stack for 2026 is federal marginal rate plus 7.65% FICA plus 4.0% Mississippi. A $3,300 healthcare FSA election saves about $1,180 for a 22% federal bracket Mississippi employee in 2026 (vs. about $1,050 at zero state tax). Matchbook recalibrates the state marginal layer annually as the MS rate phases down.

Mississippi Unemployment Insurance Tax

Wage base $14,000 (2025-2026)

Rate range: 0.20%-5.40% experience rates; new employer rate 1.00% for year one, 1.10% year two, 1.20% year three; workforce training and Mississippi Works surcharges stack on top

The $14,000 wage base is double Florida's $7,000 but still well below full-year salaries, so Section 125 employer SUI savings materialize only on the portion of pre-tax contributions that fall within the first $14K of each employee's wages. Matchbook models the per-employee crossover date and shows employer SUI savings as a front-loaded line item rather than a flat annual figure.

Employer FICA

7.65% / 1.45% split

Employer FICA is 7.65% on wages up to the Social Security wage base ($176,100 in 2025; projected about $183,600 in 2026) and 1.45% above it. Matchbook models this per employee rather than quoting a flat rate.

Employer credits and levers

State and federal credits worth stacking

Credits that most broker ROI decks omit. Matchbook surfaces these in the employer report.

Mississippi Children's Promise Act

Dollar-for-dollar Mississippi income tax credit for business contributions to eligible charitable organizations (ECOs) funding K-12 scholarships and foster-care services. Credit capped at 50% of a C-corp's state income tax liability; annual aggregate program cap (about $24M) is typically oversubscribed on the January 1 application opening. A high-leverage CIT-offset lever for Mississippi employers with meaningful state tax liability.

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Mississippi Advantage Jobs Incentive

Rebate of up to 90% of Mississippi income tax withholdings for qualifying new jobs meeting wage thresholds (typically 110-125% of average county or state wage), for up to 10 years. Administered by MDA; paired with job-creation thresholds by industry. Matchbook surfaces this alongside Section 125 savings when an employer is evaluating expansion headcount.

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Mississippi Rural Economic Development (RED) Credit

Mississippi income tax credit equal to debt service on bonds issued by the Mississippi Business Finance Corporation for qualifying projects, typically in rural counties. Credit is capped annually by MBFC bond allocation; not stackable with certain other MDA incentives. Relevant for manufacturing and distribution employers siting in lower-tier counties.

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Federal IRC Section 45F (employer-provided childcare credit)

Federal credit of 25% with $150K cap in 2025; rises to 40% with $500K cap in 2026, and 50% with $600K cap for small employers under OBBBA. No Mississippi state match, but Matchbook surfaces the federal modeled benefit for MS employers evaluating on-site care or contracts with licensed Mississippi providers.

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Household programs

State programs that change what your employees should elect

Matchbook coordinates these against DCFSA, FSA, and HSA elections at the household level.

Childcare subsidy

Mississippi Child Care Payment Program (CCPP)

MDHS-administered subsidy for income-qualifying working families, funded via CCDBG. Eligibility generally at or below 85% State Median Income at entry; co-pays on a sliding scale. Waitlists vary by region.

Matchbook: CCPP reduces out-of-pocket dependent-care cost and therefore reduces the right DCFSA election. Matchbook asks Mississippi employees whether they are enrolled or eligible before recommending DCFSA contribution levels.

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Preschool

Mississippi Early Learning Collaborative (Pre-K)

Mississippi's publicly funded pre-K via Early Learning Collaboratives serves eligible 4-year-olds in partnering districts. Not universal; coverage is county-by-county, and most sites run a partial day that still requires wrap-around care.

Matchbook: For MS Pre-K families, the correct DCFSA election is the full-day center cost minus ELC-funded hours, not zero. Matchbook models the split based on the employee's district.

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Health programs

Coverage coordination checkpoints

Mississippi CHIP

Children's health coverage for families up to 214% FPL, administered by Mississippi Division of Medicaid. Low or no monthly premium depending on income band. Mississippi has not expanded Medicaid to adults, so the coverage gap for parents between Medicaid and ACA subsidies is material.

Matchbook: Employees declining dependent coverage on the employer plan should be screened against Mississippi CHIP thresholds before Matchbook defaults to the family tier. The non-expansion coverage gap also means more Mississippi parents rely on employer coverage as the only path.

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Mississippi Medicaid - non-expansion state

Mississippi is one of the remaining non-expansion states as of 2026. Adult eligibility is narrow (low-income parents, pregnant women, disabled). Post-PHE unwinding disenrolled a large share of beneficiaries, many procedurally.

Matchbook: Matchbook's Mississippi screener flags households that may have lost Medicaid for procedural reasons and routes them to employer coverage, CHIP for dependents, or the Marketplace. The non-expansion gap makes the Marketplace path especially important for low-wage adults above Medicaid but below 100% FPL.

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ACA Marketplace (Federally Facilitated Marketplace)

Mississippi uses the federal exchange at HealthCare.gov. 2026 employer-affordability threshold is 9.96% of household income. Enhanced premium tax credits expired at the end of 2025, so 2026 Mississippi Marketplace premiums see double-digit increases. Family-glitch fix still applies.

Matchbook: If employer family coverage exceeds 9.96% of household income, Matchbook surfaces the Marketplace dependent subsidy path - acute in Mississippi after the enhanced PTC expiration and given the non-expansion adult coverage gap.

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Retirement and wealth

State-level retirement and wealth context

Mississippi ABLE

Mississippi's Section 529A program for disabled beneficiaries, administered by the State Treasurer in partnership with the STABLE national network. 2025 contribution limit $19,000; employed beneficiaries may add up to $15,060 more. $235K account balance cap under Mississippi rules.

Matchbook: FSA or HSA dollars reimburse medical expenses; ABLE covers broader qualified disability expenses. When SSI asset limits are in play, Matchbook routes disability-related spend to ABLE first.

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MACS and MPACT (Mississippi 529 plans)

Mississippi offers two 529 plans: MACS (savings) and MPACT (prepaid tuition). Mississippi taxpayers may deduct up to $10,000 per year (single) or $20,000 (married filing jointly) in combined MACS/MPACT contributions from state taxable income - a real in-state tilt while the 4.4% and 4.0% rates remain in effect.

Matchbook: Matchbook tilts Mississippi employees toward MACS or MPACT for the state deduction while the flat tax remains above zero; as the rate phases to zero in the back half of the decade, the tilt weakens and out-of-state plan selection becomes rate-neutral.

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Section 132(f) commuter

Pre-tax commuter reality in Mississippi

2025 IRC Section 132(f) cap is $325 per month for transit and $325 per month for qualified parking.

Parking and state credits

Parking: Mississippi commute patterns are overwhelmingly car-based; fixed-route transit is limited to Jackson (JATRAN) and the Gulf Coast (CTA). Downtown Jackson parking typically sits well below the $325 cap, so qualified-parking Section 132(f) elections are a modest lever compared with transit-dense states.

State credit: None - Mississippi has no state-level commuter tax credit.

Disaster readiness

Mississippi disaster-relief playbook

IRC Section 139 qualified disaster relief payments are not W-2 wages: no FICA, no FUTA, no federal income tax withholding, and the employer gets a full deduction. Triggered by a federal disaster declaration, which recent Mississippi events have routinely qualified for - Hurricane Katrina (2005), Hurricane Zeta (2020), the March 2023 Rolling Fork tornado, and recurring Delta flooding all produced FEMA major-disaster declarations.

  • Pre-drafted Section 139 policy template so employers can disburse tax-free relief within 48 hours of a federal declaration - covers hurricane, tornado, and flood-specific line items (generator fuel, temporary housing, debris removal, storm shelter repair).
  • Post-storm Section 125 election-change guidance: a hurricane or tornado alone is not a listed change-in-status event under Treas. Reg. 1.125-4 - it qualifies only when it triggers a change in residence, employment, or cost-of-coverage.
  • FEMA Individual Assistance interaction: IRS Section 139 payments generally stack with FEMA IA, but Matchbook flags duplication risks in the disbursement log.
  • Mississippi-specific employer disaster leave review (Mississippi has no statutory paid disaster leave, so employer policy is the governing rule).
  • Tornado-season calendar hooks (peak March-May) that pre-position the Section 139 template and HR communications ahead of the NWS Jackson severe-weather window, rather than only during Gulf hurricane season.
Matchbook for Mississippi

What we ship specifically for Mississippi employers

  • Phase-down aware savings engine - Matchbook recalibrates the Mississippi marginal tax layer annually (4.4% in 2025, 4.0% in 2026, stepping toward zero) so employee ROI quotes stay accurate across open enrollments.
  • Children's Promise Act application calendar - surface the January 1 MS DOR opening and pre-populate the contribution letter for C-corps with state CIT liability, given chronic oversubscription.
  • Advantage Jobs and RED credit stacking calculator in the employer ROI report for expansion scenarios, paired with Section 125 employer FICA savings.
  • Front-loaded SUI savings display that reflects the $14,000 Mississippi wage base - show per-employee crossover dates rather than a flat annual figure.
  • Mississippi non-expansion coverage-gap screener at open enrollment - route low-wage adults above Medicaid but below 100% FPL to employer coverage or the Marketplace, and route dependents to CHIP.
  • MACS and MPACT 529 deduction tilt for Mississippi residents while the flat tax remains above zero, with automatic neutralization as the rate phases down.
  • Hurricane and tornado IRC Section 139 playbook with pre-drafted policy, covering both Gulf Coast hurricane season and the March-May tornado window.
  • Benefits graph ingests: MS DOR rate schedules and Children's Promise Act allocations, MDES UI rate notices, MDA Advantage Jobs certifications, MDHS CCPP eligibility, MDEK12 ELC rosters, and FEMA DR numbers for Mississippi.
Sources

Primary sources for this playbook

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