A corporation that is a component member of a controlled group must use Schedule O (Form 1120) to report the apportionment of taxable income, income tax, and certain tax benefits between all component members of the group. Current Revision Schedule O (Form 1120) PDF Instructions for Schedule O (Form 1120) (Print Version PDF) Recent Developments None at this time. Other Items You May Find Useful All Schedule O (Form 1120) Revisions Other Current Products Related Items About Form 1120, U.S. Corporation Income Tax Return About Form 1120-C, U.S. Income Tax Return for Cooperative Associations About Form 1120-F, U.S. Income Tax Return of a Foreign Corporation About Form 1120-FSC, U.S. Income Tax Return of a Foreign Sales Corporation About Form 1120-L, U.S. Life Insurance Company Income Tax Return About Form 1120-PC, U.S. Property and Casualty Insurance Company Income Tax Return About Form 1120-REIT, U.S. Income Tax Return for Real Estate Investment Trusts About Form 1120-RIC, U.S. Income Tax Return for Regulated Investment Companies
