La. R.S. 47:337.55 — Assessment of tax shown on face of taxpayer's returns

A. Whenever a taxpayer files returns and computes the amount of any tax due, such tax together with any penalty and interest due or accruing thereon, whether computed or not, shall be considered assessed and shall be entered by the collector as an assessment in his official records without the necessity of observing the delays or giving the notice ordinarily required prior to assessment.
B. If the taxpayer fails to accompany his return filed with a proper payment, as required by this Chapter, the collector shall immediately send a notice by mail to such person, addressed to the address appearing on the return or to any available address, informing him of the amount due, or the balance of the amount due if a partial payment has been made, and demanding payment of such amount within ten calendar days from the date of the notice. If payment has not been received at the expiration of such time, the assessment shall be collectible by distraint and sale as is hereinafter provided.
C. Nothing in this Section shall be construed as denying the right of the taxpayer to pay the assessment under protest or to claim a refund of the assessment after payment, all in a manner as is hereinafter set out in this Chapter.