Versions of Iowa Code 421.62 - Inclusion of preparer tax identification number on LawServer 2024 Iowa Code 421.62 – Inclusion of preparer tax identification number 2023 Iowa Code 421.62 – Inclusion of preparer tax identification number 2022 Iowa Code 421.62 – Inclusion of preparer tax identification number 2020 Iowa Code 421.62 – Inclusion of preparer tax identification number