Versions of Iowa Code 514.15 - Nonexempt from taxation on LawServer 2023 Iowa Code 514.15 – Nonexempt from taxation 2022 Iowa Code 514.15 – Nonexempt from taxation 2020 Iowa Code 514.15 – Nonexempt from taxation 2018 Iowa Code 514.15 – Nonexempt from taxation 2016 Iowa Code 514.15 – Nonexempt from taxation 2014 Iowa Code 514.15 – Nonexempt from taxation. 2009 Iowa Code 514.15 – Nonexempt from taxation