Versions of Texas Tax Code 171.659 - Carryforward on LawServer 2024 Texas Tax Code 171.659 – Carryforward 2023 Texas Tax Code 171.659 – Carryforward 2022 Texas Tax Code 171.659 – Carryforward 2019 Texas Tax Code 171.659 – Carryforward 2018 Texas Tax Code 171.659 – Carryforward 2016 Texas Tax Code 171.659 – Carryforward 2014 Texas Tax Code 171.659 – Carryforward