<prompt> Human: Back in April, I got a federal tax extension. I prepared taxes both for myself and my girlfriend, whom I claimed as a dependent during the 2012 tax year. So I submitted her federal return, then my federal return, then my state return. Well, it turns that on her return I had mistakenly put that she could NOT be claimed as a dependent by anyone else. Oops.So we got a 1040X, filled it out, strapped it to a camel with a check for a portion of her refund, and have been waiting ever since for the 1040X to pass through the bowels of some godforsaken IRS bureaudungeon in Kentucky. US Treasury cashed the check and their website indicates the amended return is processing. Based on their 8-12 week window, it will probably finish in August or September at the latest.Here is the problem--my federal return was immediately rejected due to this error. So I have been waiting for GFs 1040X to clear so I can resubmit my 1040. But my state return was accepted, and MD sent me a refund for 380. The state return, of course, gave me a tax break because I claimed GF as a dependent.Today I received a letter from the comptroller of Maryland, claiming that I owe 450 in delinquent taxes. It is the weekend, so I havent been able to call yet, but presumably this is because they issued me a refund based on information in my federal return, which was never accepted by the IRS.What to do?  <response>: Just relax, and call on Monday to explain the situation. 450 really isnt very much they arent going to be harassing you or anything over that amount. Just tell them you will refile your return as soon as your girlfriends 1040X goes through. 