The checkbox at the top of Form 2210 Underpayment of Estimated Tax by Individuals, Estates, and Trusts must be selected if you would like the IRS to compute any applicable penalty and send you a bill.
To check this checkbox in the TaxAct program:
If any box is checked on the previous two screens, you will not see the screen titled Underpayment Penalty - IRS. The IRS will only send a bill if they determine it is applicable to the situation.
Note that any link in the information above is updated each year automatically and will take you to the most recent version of the webpage or document at the time it is accessed.