Louisiana Tax Calculator
Louisiana applies a single flat rate to all taxable income, having replaced its former three-bracket progressive system with one flat rate effective 2025. The change simplified filing considerably for Louisiana residents. Social Security benefits are not taxed at the state level. This calculator applies the current flat rate to your entered income for an instant result.
State Tax
$3,000Effective Rate
3.00%Marginal Rate
3.00%| Rate | Bracket Range | Tax |
|---|---|---|
| 3.00% | $0+ | $3,000 |
| Total | $3,000 | |
How Louisiana income tax works
- Louisiana multiplies your taxable income by one flat rate — the old three-bracket system was retired in 2025.
- There's no need to track separate brackets, since every dollar of taxable income is taxed at the same rate.
- The calculator applies the current flat rate directly to your entered income.
Need the exact bracket thresholds instead of an estimate? See the Louisiana tax brackets for 2026 .
Estimate your Louisiana property tax by county, compare every state at the state tax brackets hub , or see the full tax-by-state directory .
Frequently asked questions
How is Louisiana income tax calculated?
Louisiana applies a single flat rate to your taxable income. The calculator multiplies your entered income by that rate to show your exact state tax.
Does Louisiana tax Social Security benefits?
No. Louisiana excludes Social Security benefits from state taxable income.
When did Louisiana move to a flat tax?
Louisiana replaced its three-bracket progressive system with a single flat rate effective 2025.
How much state tax will I pay in Louisiana?
Because Louisiana uses a flat rate, your state tax is simply that rate applied to your taxable income. Enter your figures above for an instant total.
Sources
Related insights
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