Versions of Iowa Code 8G.12 - Tax rate database on LawServer 2024 Iowa Code 8G.12 – Tax rate database 2023 Iowa Code 8G.12 – Tax rate database 2022 Iowa Code 8G.12 – Tax rate database 2020 Iowa Code 8G.12 – Tax rate database 2018 Iowa Code 8G.12 – Tax rate database 2016 Iowa Code 8G.12 – Tax rate database 2014 Iowa Code 8G.12 – Tax rate database.