The Assessor's office evaluates new construction and alterations to existing buildings and records deed changes to determine taxation. This determination is made by type of construction, number of square feet in the building and location.

Tax reduction appeals are heard by the Union County Board of Taxation in the court house in Elizabeth. A copy of the appeal must be filed with the township clerk and the assessor. The tax appeal deadline is April 1 of each calendar year.

The 2008 tax rate for Springfield was 5.49 percent and the assessment ratio for 2008 was 36.44 percent.