La. R.S. 33:2742

Police juries, before fixing the amount of taxes to be assessed for the current year, shall cause to be made out an estimate exhibiting the various items of expenditure; and shall cause the same to be published in the official newspaper of the parish, or in parishes where an official newspaper is not published, by posting written statements of the estimates in at least three of the most public places in the parishes, at least thirty days before their meeting to fix the amount of taxes to be assessed.