The Evangeline Parish Assessor is responsible for discovery, listing, and valuing all property in Evangeline 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 Evangeline Parish to ensure all property is assessed in a fair and equitable manner. Furthermore, the Assessor is responsible for ensuring that the assessments are calculated according to the Constitution of the State of Louisiana and the Revised Statutes. The Assessor is also responsible for filing the annual Tax Roll with the Louisiana Tax Commission. In addition, the Assessor works to maintain the ownership inventory of each parcel.

The Evangeline Parish Tax Collector, which is the Evangeline 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.

The different governing bodies within the parish set millage rates. These governing bodies include the Evangeline Parish Law Enforcement District, Evangeline Parish Assessment District, Evangeline Parish School Board, City of Ville Platte, Towns of Basile and Mamou, Villages of Chataignier, Pine Prairie and Turkey Creek, the Evangeline Parish Police Jury which is responsible for the library, health unit, 911 commission, elderly services, Cemetery Districts, Road Districts, Fire Districts, Water Districts, and Drainage Districts, as well as some independent water, drainage and fire protection districts.