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Louisiana Income Tax Guide

Flat 3% rateTax years beginning in 2025 and afterward use one individual income-tax rate.
$12,500 or $25,000 deductionJoint, surviving-spouse, and head-of-household filing receive double the single amount.
Retirement rules differLouisiana exclusions and the age-65 retirement exemption require income-type and age details.
Official SourcesLouisiana income taxLA deductionLouisiana formsIRS
Louisiana income taxLA deductionLouisiana formsIRS
Calculate for Louisiana

How Louisiana taxes work

Louisiana taxable income is simplifiedSupported household income is reduced by common pre-tax contributions and the combined status-based deduction.
The post-reform deduction is includedThe estimate subtracts $12,500 for single or separate filing and $25,000 for joint or head filing.
One 3% rate is appliedThe calculator reflects Louisiana's rate for tax years beginning in 2025 and afterward.
Capital-gain treatment is separateThe other-income field cannot identify qualifying net capital gains or determine a Louisiana deduction.
Age-based exclusions are outsideRetirement-income exemptions require age and distribution information not collected here.

Common Louisiana tax questions

Is Louisiana still progressive?No. The individual schedule changed to a flat 3% rate for 2025 and later tax years.
Does head of household receive $25,000?Yes. Louisiana states that head-of-household filers receive double the single deduction.
Is federal income tax deductible?The broad federal tax deduction was repealed; specialized state adjustments still require return review.
Is the age-65 retirement exemption included?No. The calculator does not collect the age and income-type facts required.
Is a local Louisiana wage tax added?No broad local individual wage tax is added automatically.
Is this Form IT-540?No. It is a planning estimate, not a complete Louisiana return.