Mississippi State Tax Calculator (2026)

How Mississippi taxes income

Mississippi charges flat 4%. State tax is a separate calculation from your federal return rather than a share of it — Mississippi sets its own schedule and its own definition of taxable income.

• Rate: 4% on all taxable income above $10,000
• Brackets: A single rate, so no bracket to cross
• Standard deduction: $2,300 single / $4,600 joint
• Personal exemption: $6,000 single, $12,000 joint, $1,500 per dependent (not applied here)

Rate figures are as of January 1, 2026 and come from the published Tax Foundation compilation; they have not been independently checked against Mississippi Department of Revenue. States do change rates mid-year, so confirm a figure there before relying on it.

What catches people out in Mississippi

• Mississippi applies a single rate of 4%, and only to taxable income above $10,000 — below that the rate is nil, so a modest income can owe nothing at all despite the state having an income tax.
• The Mississippi standard deduction is $2,300 for a single filer and $4,600 for a couple filing jointly. It is a separate figure from the federal standard deduction and usually much smaller, so itemising is a decision you make once federally and again for the state.
• Income below $10,000 is untaxed - the 4% rate applies only above that floor. The rate fell from 4.4% to 4% on 1 January 2026 and is scheduled to fall to 3.75% in 2027, 3.5% in 2028, 3.25% in 2029 and 3% in 2030, with full phaseout possible if revenue triggers are met.

What this estimate leaves out

Three things are deliberately outside this calculation, because they change more often than annually and a confident wrong number does real damage on a tax page.

• The personal exemption — $6,000 single, $12,000 joint, $1,500 per dependent — is not applied, so the figure runs slightly high.
• Local and city income tax is not included. New York City is the significant one nationally.
• State-specific credits, subtractions and income addbacks are out of scope and can move the result either way.

If you have income in India, Mississippi is where treaty relief runs out

States are not parties to the India-US tax treaty, and a state credit for "taxes paid to other jurisdictions" almost always means other US states rather than other countries.

So NRO interest, Indian rental income or a gain on Indian shares can be taxed by Mississippi with no credit for the Indian tax deducted at source — even though Form 1116 largely neutralises that same tax federally.

The treatment is not uniform across states, so treat this as the general position rather than as Mississippi's confirmed one, and check the credit rules with Mississippi Department of Revenue before relying on relief.

Sources

• Tax Foundation — 2026 State Income Tax Rates and Brackets
• Mississippi Department of Revenue — the authority for Mississippi