This is described in the What does this include? box below the question.
Add up any payments you made to your state or locality,
along with any state or locality withholdings from the previous tax year, including:
- Amounts withheld on your W-2, W-2G, and 1099
- Estimated tax payments for 2023 (including any paid in 2024 for 2023 - it's common for the fourth quarterly payment to be made in January)
- Overpayment from 2022 applied toward your 2023 return
- Payments made with an extension of time to file
- Refundable credits
You can find most of this info on your 2023 state tax return.
Do not include balance due payments made with (or after) filing a return.
Enter the total amount of all of these combined here.