La. Stat. tit. 51 § 1160
The corporation is hereby declared to be performing a public function on behalf of the municipality or parish with respect to which the corporation is organized and to be a public instrumentality of such municipality or parish. Accordingly, the corporation and all properties at any time owned by it and the income therefrom and all bonds issued by it and the income therefrom shall be exempt from all taxation in the state of Louisiana; provided, however, that the corporation may require the lessee of each of the projects of the corporation to pay annually to parish or municipal taxing authorities, through the normal collecting agency, a sum in lieu of ad valorem taxes to compensate such authorities for any services rendered by them to such projects which sum shall not be in excess of the ad valorem taxes such lessee would have been obligated to pay to such authorities had it been the owner of such project during the period for which such payment is made. Such payments to be made in lieu of taxes together with any fees and charges of such public trust, to the extent in the aggregate they do not exceed the amount of taxes that would be paid if the lessee were the owner, shall constitute statutory impositions within the meaning of R.S. 47:2128. Also for the purposes of R.S. 51:708(1) and any amendment thereto or substitution therefor, bonds issued by the corporation shall be determined to be securities issued by a public instrumentality of a political subdivision of the state of Louisiana.
La. R.S. § 51:1160