I am not experience when it comes to doing taxes. I ran into the same issue: Program flags the fact that I did not check the Locality Group because I did not know if it was 1, 2 or 3.
When I was at that site/page, I click on forms at the left upper corner. This is what I found: I needed to check a, b or c.
From this, I gathered that Locality Group 1 is Aurora, Elgin, Waukegan. I don’t live here.
Locality Group 2 is Any other locality that imposes a local sales tax.
Locality Group 3 is not applicable.
I live in Illinois and choose Locality Group for the above explanations. Check the form out and see for yourself. Go to Forms. Find the red explanation mark by Locality Wks. When I put an X in 2b (Any other locality that imposes a local sales tax, my problem went away).
I also did what KathrynG above said; use the IRS Sales Tax Deduction Calculator. I click on her link. It calculated a figure and that figure is now the same figure that the Turbo Tax program came up with.
