Thank you for your mock return. Based on the review of your South Carolina (SC) return, it appears the amounts on the screen 'Enter Required Annual Payment by Period' the entries were made automatica...
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Thank you for your mock return. Based on the review of your South Carolina (SC) return, it appears the amounts on the screen 'Enter Required Annual Payment by Period' the entries were made automatically vs direct entry since the total equals the 'required' annual SC payment.
As far as the withholding portion, if I manually edit and change the amounts on the SC Underpayment Statement (estimated based on the numbers in your post) the penalty is reduced to less than half of the current penalty calculated on your return.
As you indicated, in the Step-by-Step, there is not a question that allows you to enter the actual withholding by period, instead it uses the math of the combined total withholding for the year, for each period.
If you are using TurboTax Online, you can switch to TurboTax Desktop.
How to switch from TurboTax Online to TurboTax Desktop?
This takes place in 'Forms' mode instead of Step-by-Step. Once you make the change, in the left hand side, under Forms in My Return (scroll down to SC) you can manually override the numbers on the 'Undpmnt Stmt', column 'Amount Paid' for each period to represent the actual withholding in each period. This will give the results noted in the second paragraph above.
How do I override (replace) an amount calculated by TurboTax?
Keep all details related to this explaining why you needed to override the calculated figures.
@mminderbinder