Louisiana extends the state tax filing deadline to June 15th.
Louisiana Filing Due Date: Corporate tax returns are due by April 15 — or by the 15th day of the 4th month following the end of the taxable year (for fiscal year filers).
Extended Deadline with Louisiana Tax Extension: Louisiana offers a 7-month extension, which moves the filing deadline to November 15 (for calendar year filers).
Louisiana Tax Extension Form: The Louisiana Department of Revenue does not accept paper requests for tax extensions. You must request a Louisiana extension electronically using the Online Extension Filing system: esweb.revenue.louisiana.gov/OnlineTaxExtensions
Louisiana Extension Payment Requirement: An extension of time to file is not an extension of time to pay. If you owe Louisiana tax, your balance must be paid by the original due date to avoid penalties. You can make a Louisiana extension payment with Form CIFT-620EXT-V, or pay electronically via Online Extension Filing: esweb.revenue.louisiana.gov/OnlineTaxExtensions
Online payment vouchers can be printed out at the Louisiana Department of Revenue website: esweb.revenue.louisiana.gov/OnlineVouchers