Corporations may have to file this schedule if, at any time during the tax year, they had assets in or operated a business in a foreign country or a U.S. possession. Current Revision Schedule N (Form 1120) PDF Recent Developments None at this time. Other Items You May Find Useful All Schedule N (Form 1120) Revisions Other Current Products Related About Form 1120, U.S. Corporation Income Tax Return About Form 1120-C, U.S. Income Tax Return for Cooperative Associations About Form 1120-IC-DISC, Interest Charge Domestic International Sales Corporation Return 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 About Form 1120-S, U.S. Income Tax Return for an S Corporation