Corporations operating on a cooperative basis file this form to report their income, gains, losses, deductions, credits, and to figure their income tax liability. Current Revision Form 1120-C PDF Instructions for Form 1120-C (Print Version PDF) Recent Developments Relief from additions to tax for underpayments applicable to the new corporate alternative minimum tax -- 21-DEC-2023 Guidance on Determining a Corporation’s Estimated Tax Payment –- 20 -JUN-2023 IRS approves temporary use of e-signatures for certain forms -- 28-AUG-2020 Taxpayer Relief for Certain Tax-Related Deadlines Due To Coronavirus Pandemic -- 14-APR-2020 Tax Reform Guidance for 1120 filers -- 09-APR-2018 Other Items You May Find Useful All Form 1120-C Revisions About Publication 15 (Circular E), Employer's Tax Guide About Publication 51, (Circular A), Agricultural Employer's Tax Guide About Publication 225, Farmer's Tax Guide About Publication 463, Travel, Entertainment, Gift, and Car Expenses Other Current Products Related About Form 720, Quarterly Federal Excise Tax Return About Form 851, Affiliations Schedule About Form 1122, Authorization and Consent of Subsidiary Corporation to be Included in a Consolidated Income Tax Return About Form 1125-A, Cost of Goods Sold About Form 1125-E, Compensation of Officers About Form 1128, Application to Adopt, Change or Retain a Tax Year About Form 1120 Schedules
