The parent corporation of an affiliated group files Form 851 with its consolidated income tax return to: Identify the common parent corporation and each member of the affiliated group. Report the amount of overpayment credits, estimated tax payments, and tax deposits attributable to each corporation. Determine that each subsidiary corporation qualifies as a member of the affiliated group. Current revision Form 851 PDF Recent developments None at this time. Other items you may find useful All Revisions for Form 851 Other Current Products Related About Form 1120, U.S. Corporation Income Tax Return About Form 5452, Corporate Report of Nondividend Distributions About Form 7004, Application for Automatic Extension of Time To File Certain Business Income Tax, Information, and Other Returns