What this notice is about This notice alerts you when we terminate a Subchapter S election. What you need to do File Form 1120, U.S. Corporation Income Tax Return PDF by the due date. See Instructions for Form 1120 PDF. You may want to Keep this notice in your permanent records. Frequently asked questions Can I re-elect Subchapter S status? No, you must wait 5 years before making a new election. Tips for next time you file IRS e-file Providers and Large Taxpayers authorized to participate in IRS e-file can file Form 1120; Form 1120-S, U.S. Income Tax Return for an S Corporation PDF; and Form 1120-F, U.S. Income Tax Return of a Foreign Corporation PDF; through Modernized e-File. IRS e-file Providers and Large Taxpayers authorized by IRS should follow the official guidance listed under "How to Participate" on the Form 1120/1120S/1120-F e-file webpage. Reference Tools Publication 1, Your Rights as a Taxpayer Full list of tax forms and instructions Need Help? You can authorize someone to contact the IRS on your behalf. See if you qualify for help from a Low Income Taxpayer Clinic. If you can’t find what you need online, call the IRS number at the top of your notice or letter.