Understanding Roll Back Rates

What is a Rollback Rate?

  • The Rollback Rate is an annual statewide rate set annually for each property class by the Iowa Department of Revenue. In effect, the rate of growth in value for a given property class may be limited by the rate of growth in value of another property class. Somewhat similar to two people tied together in a three-legged race, neither property class can get too far ahead of the other one.

How is Taxable Value calculated?

  • Taxable Value for most property is calculated by multiplying the Rollback Rate for the correct property class by the equalized 100% Actual Value. Taxable Value for gas & electric utility property is calculated by the Iowa Department of Revenue.