When must I file Form L-1?


Each Form L-1 covers one quarterly period and must be filed by the last day of the month following the close of the calendar quarter except for semi-monthly payers. Semi-monthly payers must file Form L-1 by the fifteen of the month following the close of the quarter. A quarterly return must be filed even if no taxes are withheld during the quarter. If wages paid to employees were not sufficient to require withholding, an L-1 return should be submitted with zero dollar amounts. The due dates for taxpayers with a Quarterly or Monthly Payment Frequency are:
  • 1st Quarter Due: April 30th
  • 2nd Quarter Due: July 31st
  • 3rd Quarter Due: October 31st
  • 4th Quarter Due: January 31st
The due dates for taxpayers with a Semi- Monthly Payment Frequency are:
  • 1st Quarter Due: April 15th
  • 2nd Quarter Due: July 15th
  • 3rd Quarter Due: October 15th

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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