Versions of 26 USC 1378 - Taxable year of S corporation on LawServer 2024 26 USC 1378 – Taxable year of S corporation 2023 26 USC 1378 – Taxable year of S corporation 2022 26 USC 1378 – Taxable year of S corporation 2021 26 USC 1378 – Taxable year of S corporation 2020 26 USC 1378 – Taxable year of S corporation 2018 26 USC 1378 – Taxable year of S corporation