May 15 is the deadline for filing 2016 Louisiana individual income tax returns.
The Louisiana Department of Revenue recommends filing electronically for the fastest, most error-free return processing. With Louisiana File Online (revenue.louisiana.gov/fileonline), taxpayers can file their state returns for free, make tax payments and upload supporting documentation. Other electronic filing options include commercially-available tax preparation software.
Taxpayers who need more time to prepare their returns must submit their extension requests by the May 15 filing deadline to avoid late-filing penalties. Visit revenue.louisiana.gov/extensions to request an extension electronically. An extension only allows more time to file a return, not more time to pay any taxes due. Tax payments submitted after the May 15 deadline are subject to penalties and interest.