@ThomasM125 It says, "If you adjusted Illinois wages due to an incorrect W-2, also attach a letter from your employer stating the correct amount and number of work days performed in each state."
Since I moved August 1st, I used the amount of money I made after that date for my Illinois forms (I even included my total bonus, which I feel like should be pro-rated but not sure). But only Federal and Missouri is on my W-2. Does my employer need to provide the amount I made after August 1st to confirm?
