Thank you @MonikaK1
The employer withheld and remitted all $20,000 to the state.
The W2C corrected the income attributed to CA, it did not change the amount that was withheld. For the sake of the example we can say it changed income attributed to CA from $200,000 to $110,000, while keeping total federal income at $200,000.
The bottom line is that (in the example) I paid ~$20,000 via withholdings when I only owed ~$11,000.
I've seen the instructions for the schedule X, the instructions are ambiguous to me as a layperson. "Enter the amount actually paid with your original tax return."
What would I enter on line 5 given the details above?
