<prompt> Human: So my wifes ex-husband pulled off an Uber dick move and claimed our daughter on an off year when he should not have. He gets odd, we get even years.. So my state and federal taxes were rejected friday stating that she was already claimed by another party. I reached out to him amicably and got no reply. Do I have any recourse here aside from having to go through the courts? Really need this money as theyll be a roughly 2,500 difference. Any assistance is appreciated  <response>: Assuming you know you are eligible to claim your daughter as a dependent for 2016, file a complete and correct return as soon as possible.Complete your paper return and file by mail. Dont forget to sign the form. You would receive your refund by check or direct deposit in about six to eight weeks. Later in 2017, the IRS Very Old Computer VOC compares all returns looking for this type of issue. The VOC then issues CP087 notices to both parties, and they sound a little like this: Dear uTopTierGoat Greetings from your surly Uncle Sam! We checked around, and it looks like the child you claimed as a dependent was also claimed on another return, and thats just not okay. Please review the information on your 2016 return and double-check to verify youre entitled to claim that dependent exemption. If you know you did it right, Take No Actions. If you know you did it wrong, heres your chance to fix it. File an amended return on Form 1040X, repay the tax benefits you received, and we will bill you for the interest you owe. Give us a holler at 1-800-829-1040 if you have any questions. удачи! Uncle SamIf the other person does not amend their return, either or both returns could be selected for audit. The other person would not be able to prove they were eligible to claim your daughter, so they would have to pay additional tax interest possible penalties. 