I've read the thread pertaining to the TurboTax Line 12b "error" but the solution requires one to remove the charitable contribution entries. I don't believe a TurboTax customer should have to do that because the reason one enters that info is to enable the TurboTax program to determine whether one should itemize or take the standard deduction. In our case, TurboTax properly determined that we should take the standard deduction. However every time I run the review, the program states there is an error in line 12b and displays $300. In fact because we are married filing joint, and per the 1040 instructions (see below) we are allowed to deduct $600 because we donated more $600 to our church. It's OK for the review to bring this to the customers attention, but there should be nomenclature included that describes the allowable deduction. I copied and pasted from the 1040 Instructions below, (I did remove hyphens from the words that were broken in the 1040 columns).
From the 1040 Instructions document pertaining to Line 12b:
If you don't itemize deductions on Schedule A (Form 1040), you (or you and your spouse if filing jointly) may be able to take a charitable deduction for cash contributions made in 2021.
Enter the total amount of your contributions on line 12b. Don't enter more than $300 ($600 if married filing jointly).
The contributions must be made to organizations that are religious, charitable, educational, scientific, or literary in purpose. See Pub. 526 for more information on the types of organizations that qualify.
