Louisiana State Income Tax Overview
Louisiana (LA) state income tax rate: 3.0% flat (flat rate system)
Louisiana Income Tax Brackets (2026)
Flat 3.0% on all net income (as of 2025; reduced from a graduated system with top rate of 6% via constitutional amendment in late 2024)
Louisiana dramatically simplified its income tax in late 2024, moving to a flat 3.0% rate effective 2025. This replaced a graduated system with rates of 1.85%, 3.5%, and 4.25%. The change was paired with a constitutional amendment.
Median Household Income in Louisiana
The median household income in Louisiana is $50,800. Louisiana has one of the lower median household incomes in the US, reflecting its economy anchored in oil, gas, agriculture, and tourism. The flat tax reform aims to make Louisiana more competitive in attracting residents and businesses.
How to Use This Calculator for Louisiana
- Enter your gross income and filing status
- The calculator applies Louisiana's flat income tax rate of up to 3.0% flat
- Subtract your standard deduction and any applicable credits
- Review your estimated state and federal tax liability
Frequently Asked Questions
What is the Louisiana state income tax rate?
Louisiana has a flat income tax with a top rate of 3.0% flat. Flat 3.0% on all net income (as of 2025; reduced from a graduated system with top rate of 6% via constitutional amendment in late 2024).
How does Louisiana's income tax compare to the national average?
Louisiana's top income tax rate of 3.0% flat applies to a flat rate system. Louisiana dramatically simplified its income tax in late 2024, moving to a flat 3.0% rate effective 2025. This replaced a graduated system with rates of 1.85%, 3.5%, and 4.25%. The change was paired with a constitutional amendment.
What is the median household income in Louisiana?
The median household income in Louisiana is $50,800. Louisiana has one of the lower median household incomes in the US, reflecting its economy anchored in oil, gas, agriculture, and tourism. The flat tax reform aims to make Louisiana more competitive in attracting residents and businesses.
Is this state income tax calculator free to use for Louisiana?
Yes, this state income tax calculator is 100% free with no signup required. It includes Louisiana-specific tax rates and calculates your estimated state and federal tax liability instantly.