Use Form 2120 to: Identify each other eligible person who paid over 10% of the support of your qualifying relative whom you are claiming as a dependent, and Indicate that you have a signed statement from each other eligible person waiving his or her right to claim that person as a dependent. Current revision Form 2120 PDF Recent developments None at this time. Other items you may find useful All Form 2120 Revisions Other Current Products Related About Form 1040, U.S. Individual Income Tax Return About Form 1040-A, U.S. Individual Income Tax Return About Publication 17, Your Federal Income Tax (For Individuals) About Publication 501, Dependents, Standard Deduction, and Filing Information