In 2017, Carroll Township property owners were subject to the following millage rates: Carroll Township - 0.34900 mills and Perry County 3.3125 mills. Carroll Township does not levy an earned income tax. For 2017, West Perry School District's millage was 11.43 mills. West Perry School District also levies a 1.7% earned income tax which only applies to wage earners. Both social security income and pension income are exempted from the earned income tax regardless of the wealth of the individual or the amount of the pension.