Louisiana has a top marginal income tax rate of 3% for 2026. See the full brackets, standard deduction, and how it stacks up against the national average.
Last updated: May 2026 · Data: state revenue departments, IRS, BLS
Louisiana uses a flat income tax system administered by the Louisiana Department of Revenue. The top marginal rate for 2026 is 3%.
| Taxable Income | Tax Rate (2026) |
|---|---|
| All taxable income | 3% |
Louisiana replaced its graduated brackets with a single flat 3% rate effective 2025.
Louisiana income tax starts from your taxable income after deductions. For 2026 (2025 tax year), the federal standard deduction is $15,000 for single filers and $30,000 for married filing jointly, which reduces the income subject to federal tax.
| Standard Deduction (2026) | Amount |
|---|---|
| Federal - Single | $15,000 |
| Federal - Married Filing Jointly | $30,000 |
| Federal - Head of Household | $22,500 |
State standard deductions, personal exemptions, and credits vary and may differ from the federal amounts above. Confirm Louisiana figures with the Louisiana Department of Revenue.
| Benchmark | Top Marginal Rate |
|---|---|
| Louisiana (2026) | 3% |
| National average - all 50 states | 4.86% |
| National average - 41 states with an income tax | 5.93% |
| Highest in the U.S. (California) | 13.3% |
| Lowest among states that tax income | 2.5% |
| States with no income tax | 0% (9 states) |
At 3%, Louisiana's top rate is below the national average of 4.86% (all 50 states).
Louisiana reformed its income tax in 2022, reducing brackets from six to three. The state has relatively high combined state and local sales tax rates.
| Louisiana Tax Snapshot | 2026 |
|---|---|
| Top Income Tax Rate (2026) | 3% |
| Income Tax Structure | Flat rate |
| State Sales Tax | 4.45% |
| Minimum Wage | $7.25/hour |
| Median Household Income | $57,000 |
| Tax Agency | Louisiana Department of Revenue |
Run the numbers for Louisiana with our free calculators:
See how nearby states tax income in 2026:
Louisiana has a top marginal state income tax rate of 3% for 2026. It is administered by the Louisiana Department of Revenue.
Louisiana uses a flat income tax rate, meaning the same percentage applies to all taxable income.
Louisiana applies a single flat rate, so there is effectively one bracket.
The 2026 federal standard deduction is $15,000 for single filers and $30,000 for married filing jointly. Louisiana state deductions, exemptions, and credits can differ; verify current figures with the Louisiana Department of Revenue.
At 3%, Louisiana's top rate is below the national average of 4.86% (all 50 states). The national average top marginal rate is 4.86% across all 50 states and 5.93% among the 41 states that levy an income tax.
State income tax in Louisiana is collected by the Louisiana Department of Revenue. Federal income tax and FICA (Social Security and Medicare) are paid separately to the IRS.