Wisconsin form 1 autofilling line 3 incorrectly; how can I tell TurboTax and get it fixed?

There's no known issue with Wisconsin Form 1, line 3.

Line 3 of Wisconsin Form 1 is the sum of 

• Line 1 of Wisconsin Form 1 (federal adjusted gross income (AGI) from Form 1040, line 11) and
• Line 2 of Wisconsin Form 1 (adjustments to federal adjusted gross income from Wisconsin Schedule I, line 3)

TurboTax doesn't pull Form 1, line 3 directly from line 11 (or either line 1a or 1z, for that matter) of your federal return.  It adds your federal line 11 amount to your Wisconsin Schedule I, line 3 amount -- if there is an amount -- to compute Form 1, line 3.  If there's no Schedule I, line 3 amount, line 1 of Wisconsin Form 1 will equal line 3 of the same form.

Your federal line 11 amount includes line 1a (reportable W-2 wages), which must be included in line 1z.  It also includes many more income items and adjustments.  Please see Form 1040 to see all of the items that would be included in line 11.

What you're seeing on line 3 of Form 1, if it differs from line 1, is your federal AGI adjusted by Line 3 of your Wisconsin Schedule I, which computes additions and subtractions from your federal AGI.

Please refer to Schedule I and its instructions to see if this isn't what's happening on your Wisconsin return.  Wisconsin Form 1 and its instructions, and Schedule I and its instructions, can be found at 2022 Individual Income Tax Forms. 

If this isn't what you're seeing, please provide more information, including what adjustments, if any, are being made on Schedule I.