La. R.S. 47:2129

All statutory impositions shown on the notice sent to the tax debtor shall be paid in cash, or at the discretion of the tax collector, by other forms of payment. The tax collector may charge a processing fee to recover the additional cost of accepting other forms of payment. The tax collector shall keep a written record of each payment identifying the amount paid and the assessment number and shall provide a written notice of payment to each tax debtor if the tax debtor so requests. The tax collector may refuse to accept payment of less than all the outstanding statutory impositions, and the processing fee, other than as provided in R.S. 47:2130.