Get your taxes done using TurboTax

I got  a RCN from Illinois and Line 25 says I did not pay state taxes. So I owe. It's not true I paid state taxes, and I had to send in W2 and last check stub in 2020, because they said they were not able to verify the amount of state taxes paid. How could this happen? I file through turbo tax and gave me the amount I'm owed, so how the state came up with something other than that???