Form 355S Instructions - Web 355s corporate excise forms. Must be filed electronically through masstaxconnect. S corporation excise return (english, pdf 1.03 mb) 2022 form 355s instructions (english, pdf 336.06 kb) 2022. Web instructions how is s corporation income taxed? Web we last updated the massachusetts s corporation excise return in january 2024, so this is the latest version of form 355s, fully updated for tax year 2023.
Web we last updated the massachusetts s corporation excise return in january 2024, so this is the latest version of form 355s, fully updated for tax year 2023. S corporation excise return (english, pdf 1.03 mb) 2022 form 355s instructions (english, pdf 336.06 kb) 2022. Web instructions how is s corporation income taxed? Web 355s corporate excise forms. Must be filed electronically through masstaxconnect.