<prompt> Human: So i accidentally sent a check to the IRS for my owed federal taxes. Instead of signing the front i endorsed it like an idiot. What should i do? Will they accept it anyway?  <response>: Checks pretty much work on an exception basis not positive confirmation basis. Most likely it will be deposited just fine because the banking systems knows you will dispute it if its not correct and youre not going to dispute a check for your taxes that you filled out yourself unless youre an idiot. 