Why is interest assessed?


Revised Statute 47:1601 provides for interest to be added to unpaid taxes. When a taxpayer fails to pay the tax by the due date, interest will be added to the amount of tax due computed from the tax due date until the tax is paid. The interest rate is set annually at three percent above the legal interest rate provided for by Revised Statute 9:3500(B)(1). The Commissioner of the Office of Financial Institutions sets the legal interest rate at three and one-quarter percent above the discount rate published in the Wall Street Journal on the first business day of October.

LDR announces the interest rate on tax liabilities each year in a Revenue Information Bulletin.

Filing Dates


News & Announcements

September 02, 2025

Hunters get a tax break during the 2nd Amendment Weekend Sales Tax Holiday, Sept. 5-7

BATON ROUGE – Consumer purchases of firearms, ammunition and a wide range of hunting supplies are exempt from state and local sales tax during the Louisiana Second Amendment Weekend Sales Tax Holiday, Friday, Sept. 5 through Sunday, Sept. 7.

August 26, 2025

LDR partners with OMV in Lafayette to resolve driver’s license suspensions

BATON ROUGE – The Louisiana Department of Revenue (LDR) is partnering with the state Office of Motor Vehicles (OMV) to help Lafayette-area taxpayers resolve driver’s license suspensions.

August 25, 2025

New Orleans-area suspects arrested; products seized in crackdown on illegal vapes

BATON ROUGE – A state task force arrested four people and confiscated tens of thousands of banned substances in the second phase of a statewide crackdown on illegal and unauthorized vape products.


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