Corporations, tax-exempt organizations subject to the unrelated business income tax, and private foundations use Form 2220 to determine: Whether they are subject to the penalty for underpayment of estimated tax and, if so, The amount of the underpayment penalty for the period that applies. Current revision Form 2220 PDF Instructions for Form 2220 (Print Version PDF) Recent developments Relief from additions to tax for underpayments applicable to the new corporate alternative minimum tax -- 21-DEC-2023 Other items you may find useful All Form 2220 revisions About Publication 542, Corporations Other current products Related About Form 990-PF, Return of Private Foundation or Section 4947(a)(1) Nonexempt Charitable Trust Treated as a Private Foundation 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-ND, Return for Nuclear Decommissioning Funds and Certain Related Persons About Form 1120-PC, U.S. Property and Casualty Insurance Company Income Tax Return
