Versions of Iowa Code 453B.7 - Tax imposed -- rate of tax on LawServer 2023 Iowa Code 453B.7 – Tax imposed — rate of tax 2022 Iowa Code 453B.7 – Tax imposed — rate of tax. 2020 Iowa Code 453B.7 – Tax imposed — rate of tax. 2018 Iowa Code 453B.7 – Tax imposed — rate of tax. 2016 Iowa Code 453B.7 – Tax imposed 2014 Iowa Code 453B.7 – Tax imposed – rate of tax. 2009 Iowa Code 453B.7 – Tax imposed — rate of tax