Mississippi Income Tax Calculator 2026 โ Flat 4% Above $10K
Calculate your 2026 Mississippi state income tax: flat 4% on income above $10,000. Standard deduction $2,300/$4,600, personal exemption $6,000/$12,000. Old 3-bracket vs new flat savings comparison.
Mississippi Tax Calculation Breakdown (2026)
Mississippi Income Tax 2026 โ Flat Rate Reform
Mississippi's 2026 flat tax applies 4% only to income above $10,000 (after deductions and exemptions). The $10,000 threshold, combined with the standard deduction and personal exemption, means a single filer must earn more than $18,300 before paying any Mississippi income tax.
Calculation Formula
Tax-free threshold: first $10,000 of taxable income = 0%
MS Tax = max(0, MS Taxable Income โ $10,000) ร 4%
Example: Single filer, $55,000, 0 dependents
Above $10,000 threshold: $46,700 โ $10,000 = $36,700
MS Tax: $36,700 ร 4% = $1,468 | Effective rate: 2.67%
Old 3-Bracket vs New Flat Rate Savings
Exactly how much did Mississippi's 2026 flat tax reform save at your income level?
Under Mississippi's old 3-bracket system (used until 2026), income was taxed at 3% ($1โ$5K), 4% ($5Kโ$20K), and 5% (above $20K). The 2026 flat rate eliminates the 5% bracket entirely. Here's the comparison at your income level.
| System | Year | Top Rate | MS State Tax | Savings (2026) |
|---|
Old Bracket Detail (pre-2026)
| Bracket (Old) | Rate | Income in Bracket | Tax |
|---|
Old system uses same deductions/exemptions as 2026 for a like-for-like rate comparison. The savings shown reflect only the rate structure change.