As used in ORS 307.130, 307.147, 307.580, 308A.450, 310.140, 310.800 and 311.666, “Internal Revenue Code” means the federal Internal Revenue Code as amended and in effect on December 31, 2023. [2014 c.52 §15; 2015 c.348 §27; 2015 c.442 §22; 2016 c.33 §15; 2017 c.527 §16; 2018 c.101 §16; 2019 c.319 §16; 2021 c.456 §17; 2022 c.83 §17; 2023 c.97 §2; 2023 c.171 §17; 2024 c.75 §17]