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

January 29, 2025

Louisiana state income tax filing begins Wednesday, Jan. 29

Louisiana Department of Revenue (LDR) will begin accepting 2024 state individual income tax returns on Wednesday, Jan. 29, 2025.

January 08, 2025

To reduce costs, LDR to cease mailing state sales tax returns to businesses

Louisiana Department of Revenue will cease printing and mailing copies of the Louisiana state sales tax return to businesses registered for sales tax in the state.

December 11, 2024

Tax preparer faces multiple felony fraud charges

A Terrebonne Parish woman faces multiple felony charges for the attempted theft of thousands of dollars in fraudulent state income tax refunds.


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