<prompt> Human: My ex and I broke up just over a year ago. She insisted on claiming him last year, and since the breakup was fresh, I didnt have the energy to fight it. She told me then that I would be able to claim him this year instead. I spoke with her last night, reminding her that I would be claiming him once I file my taxes. Long story short, she lost it, and said she would be claiming him no matter what. Im working on taking her to court since she wont agree on a parenting plan, so nothing is in writing. I provide for him financially and saved every receipt. I want to put the money into an account for my son to have when hes 18, while she will spend the money on herself. I plan to claim him regardless of her intentions, but Im concerned she will receive her W2 before me and I will be SOL. Can I file my taxes based off of last years info and then file an amendment once I receive my W2 to claim him before she can? Does anyone have any other suggestions?  <response>: I just want to tell you, as another single father taking a worthless mother to court drugs, and she is already pregnant again good for you. Kids need good parents, and being a single dad is hard. But one good parent is better than none. 