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The letter stated that “one or more of the following items was incorrect”. I checked all of them and they were all correct except 1. If I claim head of household, my AGI could t be over $112,500. TurboTax had my AGI at $114k. So it seems that everything was correct, except turbo tax made a mistake calculating my tax return/liability. Seems TurboTax should owe that difference right?