The Acadia Parish Assessor is responsible for discovery, listing, and valuing all property in Acadia Parish for ad valorem tax purposes. This property includes all Real Estate, all Business Movable Property (Personal Property), and all Oil & Gas Property and Equipment. The Assessor is responsible to the citizens of Acadia Parish to ensure all property is assessed in a fair and equitable manner. At the same time, the Assessor is responsible for ensuring that the assessments are done according to the Constitution of the State of Louisiana and the Revised Statutes that are passed by the Legislature. The Assessor is also responsible for filing the annual Tax Roll with the Louisiana Tax Commission. In addition, the Assessor must maintain the property maps for each piece of Real Estate, maintain the legal description of each property parcel, as well as maintain the ownership inventory of each parcel.

The Acadia Parish Tax Collector, which is the Acadia Parish Sheriff, is responsible for sending tax bills and collecting taxes based on the assessments and the millage rates. The annual parish tax bills are sent out in the latter part of the year and are due by December 31 of that year.

Each municipality within the parish is responsible for sending tax bills and collecting taxes based on the assessments and the millage rates for that municipality. The municipality sets these millage rates or tax rates.

The different governing bodies within the parish set millage rates for the parish. These governing bodies include the Acadia Parish School Board, Acadia Parish Police Jury, Acadia Parish Sheriff, and several others. Also there may be additional millages set for the individual Fire Districts, Water Districts, etc. These millages depend upon the location of the property.