Who Must File

A corporation or other entity must file Form 1120-S if (a) it elected to be an S corporation by filing Form 2553, (b) the IRS accepted the election, and (c) the election remains in effect. After filing Form 2553, you should have received confirmation that Form 2553 was accepted. If you didn’t receive notification of acceptance or nonacceptance of the election within 2 months of filing Form 2553 (5 months if you checked box Q1 to ask for a letter ruling), please follow up by calling 800-829-4933. Don’t file Form 1120-S for any tax year before the year the election takes effect.

Relief for late elections. If you haven’t filed Form 2553 or didn’t file Form 2553 on time, you may be entitled to relief for a late-filed election to be an S corporation. See the Instructions for Form 2553 for details.