When is the sales tax return due? What happens if I am late?


The tax return is due on or before the 20th day of the month following the close of the calendar month or quarter reporting period. Interest and penalties will be assessed on delinquent returns and/or payments. NOTE – In addition to the delinquent penalties reported above, a taxpayer may also incur a negligence penalty under LA R.S. 47:1604.1 if circumstances indicate willful negligence or intentional disregard of rules and regulations. Also, an examination fee may be imposed in the event the Department is required to issue a billing notice necessitated by the filing or lack of filing of this return.

Filing Dates


News & Announcements

May 14, 2025

Tax preparer arrested for gambling-related tax fraud scheme

A Louisiana tax preparer faces felony charges over an alleged scheme to steal tens of thousands of dollars in fraudulent income tax refunds.

May 12, 2025

Louisiana state income tax deadline is May 15

The deadline for 2024 Louisiana state income tax is Thursday, May 15.

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.


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