Mississippi Tax Deduction Checklist — 2026

Maximize your tax savings with our comprehensive checklist of tax deductions available to self-employed individuals.

Quick Mississippi Tax Estimate

Based on Mississippi's tax rates for 2026. Enter your details for a personalized calculation.

State Tax on $80K Profit
$1,289.93
SE Tax
$11,303.64
Effective Rate
21.8%
Marginal Rate
12%
Full Mississippi Tax Calculator →

Mississippi Tax Information

State Income TaxYes
Top Marginal Rate4%
Sales Tax0%
LLC Filing Fee$0
Annual Report Fee$None
Standard DeductionN/A

Self-employed pay both federal and Mississippi state tax.

Mississippi Income Tax Brackets (2026)

Tax RateFromTo
0%$0$10,000
4%$10,000No limit

Mississippi Quarterly Tax Deadlines

Q1
Apr 15
Q2
Jun 16
Q3
Sep 15
Q4
Jan 15

Frequently Asked Questions

What is the biggest deduction for self-employed in Mississippi?
The self-employment tax deduction (50% of SE tax), health insurance premiums, and retirement contributions are typically the largest. The QBI deduction (20% of qualified business income) can also be substantial.
Can I deduct my home office in Mississippi?
Yes, if used regularly and exclusively for business. Simplified method: $5/sq ft up to 300 sq ft (max $1,500). Regular method: actual expenses prorated by square footage percentage.
What vehicle expenses can I deduct in Mississippi?
Standard mileage rate: $0.70/mile for 2026. Or actual expenses (gas, insurance, repairs, depreciation) prorated by business use %. Track all business miles with a log or app.
Are health insurance premiums deductible in Mississippi?
Yes. Self-employed individuals can deduct 100% of health, dental, and long-term care insurance premiums for themselves, spouse, and dependents. This is an above-the-line deduction.
What can't I deduct as self-employed in Mississippi?
Non-deductible: personal expenses, commuting to your regular workplace, clothing wearable outside work (unless uniforms), entertainment, political contributions, and fines/penalties.