State of Louisiana Business Income Tax Extensions

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General Instructions


Louisiana business tax forms are due by the 15th day of the 4th month after the end of the tax year. For calendar year filers, this date is April 15. If you cannot file on time, you can get a Louisiana tax extension.

A Louisiana business extension will give you 7 more months to file, moving the deadline to November 15 (for calendar year filers). You must submit an extension request by the original due date of your return (April 15).

The State of Louisiana no longer provides or accepts paper extension requests. All Louisiana taxpayers are now required to apply for a tax extension electronically. You can submit a business extension request online via Louisiana Online Extension Filing:


A tax extension does not give you more time to pay your Louisiana tax, which is still due by the original deadline (April 15). To pay your state tax balance, use Louisiana Form CIFT-620EXT-V (Corporation Tax, Electronically Filed Extension Payment Voucher). You can also pay electronically using Louisiana’s Online Extension Filing system (see link above). To print an electronic payment voucher, go to: esweb.revenue.louisiana.gov/OnlineVouchers

For more information, please visit the Louisiana Department of Revenue website: www.rev.state.la.us

Louisiana State Income Tax Extension Forms


Form CIFT-620EXT-V (Corporation Tax, Electronically Filed Extension Payment Voucher):



Mail with payment to the following address:

Louisiana Department of Revenue

P.O. Box 751

Baton Rouge, LA  70821-0751