What are the penalties for filing late tax returns?


The delinquent penalty is 5 percent of the tax liability for each 30 days or fraction thereof, not to exceed 25 percent. Interest accrues on any unpaid tax from the due date to the date of payment. Refer to Form R-1111, Tax Interest Rate Schedule, for the applicable monthly interest rates. Form R-1111 is available on LDR’s website at www.revenue.louisiana.gov.

Electronic payments and filings that are submitted late will be assessed a delinquent penalty per LA R.S. 47:1519 and 1520 and will be subject to penalties and interest as set forth in LA R.S. 47:1601 and 1602.

In addition to the delinquent penalties described above, a taxpayer may also incur accuracy-related penalties under LA R.S. 47:1604.1.


Filing Dates


News & Announcements

August 12, 2025

Guilty plea resolves fraud investigation related to Hurricane Ida recovery

A guilty plea in a Baton Rouge criminal court closes the investigation into a fraud case related to the recovery process following Hurricane Ida in 2021.

July 31, 2025

New penalties for Kratom in effect Aug. 1

Starting Aug. 1, 2025, severe new penalties are in effect for the possession of the herbal supplement known as Kratom. Kratom is sold often as an energy booster, pain reliever and mood lifter. Its potential harmful side effects include liver toxicity, seizures and death.

July 28, 2025

Millions in state tax refunds moving to Unclaimed Property if taxpayers don’t claim them

BATON ROUGE – Louisiana taxpayers have until Sept. 6, 2025, to claim millions of dollars in state tax refunds before they become unclaimed property.


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