The formulas
- Taxable income = income - standard deduction - personal exemptions (when applied), not below zero
- Tax = 0% on the first $10,000 of taxable income, 4% on the excess (2026)
- Standard deduction $2,300 single or separate, $3,400 head of family, $4,600 joint
- Exemption $6,000 single or separate, $8,000 head of family, $12,000 joint
- Mississippi income tax = tax from the rate schedule
How it works
Tax year: 2026.
Mississippi taxes income at a flat 4%. Enter income before state deductions and choose whether to apply the state standard deduction and personal exemptions, or enter taxable income and switch them off. The tool computes state income tax only; credits other than those named are not applied.
For 2026 Mississippi taxes nothing on the first $10,000 of taxable income and 4 percent on the rest (4.4 percent in 2025). The standard deduction and personal exemption are fixed amounts; dependents add $1,500 each and age 65 or blindness $1,500 each, not applied here. On a joint return Mississippi computes the tax for each spouse, so each spouse with income gets a $10,000 zero band; the tool applies one band to the joint total, which overstates a two-earner couple's tax by up to $400.
Local taxes: Mississippi cities and counties do not levy a local income tax.
Illustrative figures only. Check the result against your firm's methodology before relying on it.
Common questions
What is the Mississippi income tax rate for 2026?
Mississippi taxes income at a flat 4% for 2026. Tax = 0% on the first $10,000 of taxable income, 4% on the excess (2026).
What is the Mississippi standard deduction?
Single: $2,300; Married filing jointly or surviving spouse: $4,600; Head of household: $3,400; Married filing separately: $2,300 (2026, at low income).
Are there local income taxes in Mississippi?
Mississippi cities and counties do not levy a local income tax.
Sources
Runs in your browser. The figures you type are not sent to CORAA or stored. Check the result against your firm's methodology before relying on it.