What is the Louisiana income tax rate?

Louisiana has a flat income tax rate of 3.0%. All taxable income is taxed at this same rate regardless of income level.

Does Louisiana have a standard deduction?

Louisiana does not offer a state standard deduction. Your state taxable income may be based on your federal adjusted gross income.

How is Louisiana income tax calculated?

Louisiana uses a flat tax system. After subtracting your standard deduction (if applicable), your remaining taxable income is taxed at a flat rate of 3.0%, then added to your federal tax and FICA obligations.

How do I calculate my total Louisiana tax bill?

Your total tax includes federal income tax (10%–37%), Social Security (6.2% on the first $176,100), Medicare (1.45%), and Louisiana state income tax. Use our free calculator above for an instant breakdown.

Louisiana Income Tax Calculator 2026

Estimate your Louisiana (LA) income tax for 2026. Louisiana has a 3.0% flat state income tax. Enter your income below and click “Calculate Taxes” for an instant breakdown.

Note: Transitioned to flat rate in 2025

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Louisiana Income Tax Overview

Louisiana has a flat income tax rate of 3.0%. This means all taxable income is taxed at the same rate regardless of how much you earn.

Frequently Asked Questions

What is the Louisiana income tax rate?: Louisiana has a flat income tax rate of 3.0%. All taxable income is taxed at this same rate regardless of income level.
Does Louisiana have a standard deduction?: Louisiana does not offer a state standard deduction. Your state taxable income may be based on your federal adjusted gross income.
How is Louisiana income tax calculated?: Louisiana uses a flat tax system. After subtracting your standard deduction (if applicable), your remaining taxable income is taxed at a flat rate of 3.0%, then added to your federal tax and FICA obligations.
How do I calculate my total Louisiana tax bill?: Your total tax includes federal income tax (10%–37%), Social Security (6.2% on the first $176,100), Medicare (1.45%), and Louisiana state income tax. Use our free calculator above for an instant breakdown.

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