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

June 16, 2025

Suspects arrested, products seized and businesses closed in multi-agency vape crackdown

BATON ROUGE – A multi-agency state and federal crackdown on unauthorized vape products in Louisiana resulted in ten arrests and more than $1 million worth of illegal vape pens, pods, juices and other products taken off the streets.

June 12, 2025

Louisiana men arrested for gambling-related tax fraud scheme

BATON ROUGE – Two Louisiana men face felony charges for their alleged involvement in a scheme to steal of hundreds of thousands of dollars in state income tax refunds.

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.


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