Louisiana State Income Tax Rates 2025. The louisiana tax calculator lets you calculate your state taxes for the tax year. Use our income tax calculator to find out what your take home pay will be in louisiana for the tax year.
Louisiana lawmakers passed a massive tax reform bill including changes to the state income. The individual reform removes the graduated tax rate and replaces it with a flat 3% tax on net income, resulting in a tax cut for most louisiana taxpayers.