To set up estimated payments for Illinois, from the main menu of the Illinois state return, select:
- Payments and Refundable Credits
- IL Estimates - Enter the amount of the estimated payment that will be made for each quarter.
The estimated payment vouchers can be printed from this menu by selecting Print Estimate Coupons or can be printed from the View Results menu in the federal return.
Additional Information:
Illinois State Tax Information
Where do I make an Automatic Extension of Time to File Payment for Illinois?