Mississippi Income Tax Calculator 2026
Mississippi applies a graduated individual income tax system under the current published tax structure. The mississippi income tax calculator provides a simplified estimate of Mississippi state income tax based on taxable income and the state’s published rate structure under the current published tax structure.
Estimates are shown for the 2026 tax year. In cases where official figures have not yet been finalized, calculations are based on the most recently available data and may be updated when final guidance is published.
Annual taxable income for the selected tax year.
Estimated state income tax
Shows an estimated state income tax and an effective rate based on the provided values.
Mississippi Income Tax Calculator 2026 – how it works
Mississippi state income tax is determined by applying marginal rates to taxable income under the Mississippi state income tax structure. For taxable income from 0 to 10000, the marginal rate is 0.00%. For taxable income from 10000 to and above, the marginal rate is 4.40% on the portion above 10000. This means income within each band is taxed at that band’s rate, rather than applying a single rate to all taxable income. For official guidance and definitions used in administration, refer to the Mississippi Department of Revenue (https://www.dor.ms.gov).
Examples
The following examples describe how the marginal structure applies to taxable income in Mississippi. Example 1: Taxable income from 0 to 10000. Under Mississippi’s published structure, the marginal rate in this band is 0.00%, so taxable income within this band is not taxed by the state income tax. Example 2: Taxable income above 10000. The first 10000 of taxable income falls in the 0.00% band. Any taxable income above 10000 falls into the 4.40% marginal rate band, and only the portion above 10000 is taxed at 4.40%.
Limitations and important notes
Results are simplified estimates and may not match a filed return. This estimate is limited to the Mississippi state income tax rate structure as currently published and does not incorporate details that can affect taxable income or final liability. It does not address filing status rules, adjustments, credits, withholding, payments, penalties, interest, or other return-specific calculations. It also assumes taxable income is already determined under applicable rules; differences in how taxable income is computed can materially change the outcome.
FAQs about Mississippi Income Tax Calculator 2026
What does “graduated” mean for Mississippi state income tax?
A graduated system applies different marginal rates to different portions of taxable income. In Mississippi, taxable income from 0 to 10000 is subject to a 0.00% marginal rate. Taxable income from 10000 to and above is subject to a 4.40% marginal rate on the portion above 10000. This structure means the rate can change as taxable income crosses the threshold, but only the amount in the higher band is taxed at the higher rate.
Does the 4.40% rate apply to all taxable income once income is above 10000?
No. Under Mississippi’s marginal rate structure, the 4.40% rate applies only to the portion of taxable income above 10000. The portion of taxable income from 0 to 10000 remains in the 0.00% band. This distinction is important because marginal taxation does not retroactively apply the higher rate to the entire taxable income amount. The total tax is the sum of tax computed within each applicable band.
What income amount is used for the estimate: gross income or taxable income?
The estimate is based on taxable income, not gross income. Mississippi’s published rate structure applies to taxable income from 0 to 10000 at 0.00% and from 10000 to and above at 4.40% on the portion above 10000. Taxable income is a defined amount that can differ from gross income due to rules that determine what is included and how taxable income is computed. If taxable income is different, the estimated tax will differ accordingly.
Why can an estimate differ from the final Mississippi tax on a filed return?
An estimate can differ because a filed return may include elements beyond the marginal rate schedule. While the Mississippi structure applies 0.00% from 0 to 10000 and 4.40% from 10000 to and above on the portion above 10000, a return can be affected by return-specific items that change taxable income or final liability. In addition, timing and reconciliation items such as withholding and payments affect the amount due or refunded, even when the underlying tax calculation is similar.
What are the key limitations of a simplified Mississippi income tax estimate?
A simplified estimate focuses on the stated marginal rate structure and does not incorporate all factors that can affect a taxpayer’s result. For Mississippi, the estimate reflects 0.00% on taxable income from 0 to 10000 and 4.40% on taxable income from 10000 to and above for the portion above 10000. It does not account for detailed rules that may change taxable income, nor does it address credits, withholding, payments, penalties, or interest. As a result, it should be treated as an approximation rather than a filing outcome.
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Calculations are simplified and for guidance only. Always double-check results and current rules with official sources or a qualified professional before making financial decisions.