What is Mississippi's income tax rate for 2024?

For 2024 Mississippi exempts the first $10,000 of taxable income and taxes everything above $10,000 at a flat 4.7%. The rate is being lowered in stages — 4.4% in 2025 and 4.0% in 2026 — but 4.7% applies to the 2024 tax year.

Does Mississippi have a flat income tax?

Effectively yes. After the first $10,000 of taxable income (which is taxed at 0%), all remaining income is taxed at a single flat rate. There are no graduated upper brackets, so a high earner and a middle earner pay the same marginal rate.

What is the Mississippi standard deduction?

For 2024 the standard deduction is $2,300 for single or married-filing-separately filers, $4,600 for married filing jointly, and $3,400 for head of household. You may itemize instead if your itemized deductions are larger.

How big is the Mississippi personal exemption?

Mississippi grants a personal exemption of $6,000 for single filers, $12,000 for married filing jointly, and $8,000 for head of household, plus an additional $1,500 for each dependent. These are subtracted along with the deduction before tax is computed.

Does this include federal tax?

No. This calculator computes only Mississippi state income tax. Federal income tax, Social Security, and Medicare are separate. Use it to estimate the state line of your return.

Mississippi Income Tax Calculator

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Mississippi has moved to a near-flat income tax. For the 2024 tax year the first 10,000 dollars of taxable income is taxed at 0 percent and everything above it at a flat 4.7 percent. This calculator applies that structure with the correct standard deduction and personal and dependent exemptions.

How it works

Mississippi taxable income is your adjusted gross income minus your deduction and your exemptions:

taxable = AGI − deduction − (personal exemption + 1500 × dependents)

The tax then has two slices. The first 10,000 dollars of taxable income is taxed at 0 percent; the remainder is taxed at the flat 4.7 percent 2024 rate:

tax = max(0, taxable − 10000) × 0.047

The 2024 standard deduction is 2,300 dollars (single / MFS), 4,600 dollars (MFJ), or 3,400 dollars (HoH). The personal exemption is 6,000 dollars single, 12,000 dollars joint, or 8,000 dollars head of household, plus 1,500 dollars per dependent.

Example

A single filer with 50,000 dollars AGI and no dependents subtracts the 2,300 standard deduction and 6,000 personal exemption, leaving 41,700 dollars taxable. The first 10,000 is exempt, so 31,700 is taxed at 4.7 percent = about 1,490 dollars, an effective rate near 3 percent of AGI.

Notes

Estimate only, not tax advice. Mississippi is phasing the flat rate down to 4.4 percent in 2025 and 4.0 percent in 2026; this tool uses the 4.7 percent 2024 rate. Mississippi does not tax qualified retirement income. Confirm figures against Form 80-105 instructions at dor.ms.gov.