How do I make an extension payment for my Louisiana Corporation Income and Franchise taxes return?


An electronic payment can be made through tax preparation software that supports the option, through LaTap; or online by credit card. If you need to mail in a check or money order, you must use the Extension Payment Voucher, Form CIFT-620Ext-V. This voucher can be printed through the Online Payment Voucher application and mailed to Post Office Box 751, Baton Rouge, LA 70821-0751. (Question & answer revised January 10, 2023)