If it didn't transfer over from last year then enter a refund from last year that you applied to this year here. BUT first make sure it's not already there. You don't want to apply it twice.
Federal on left
Deductions and Credits at top
Then scroll way down to Estimates and Other Taxes Paid
Other Income Taxes - Click the Start or Revisit
Next page scroll down to 2018 Refund Applied to 2019
Click Start or Update by the tax you applied
NOTE: When you enter a 1099G for a state refund under income there is a box to check and then fill out the amount of state refund you had applied to next year's estimated taxes. If you filled that in then do not fill it in again under Deductions and Credits. It won't show that amount in Deductions but if you enter it again it will be doubled.
Then for your 1099G State Refund........
A State Tax Refund is taxable if you itemized deductions on that prior year's federal return and took a deduction for state income taxes instead of the sale tax. You got a deduction benefit for it so now you have to include it as income. If you took the standard deduction it is not taxable and you don't need to report it.
