Figuring the Penalty
If you choose to figure the penalty yourself, use Form 2210 (or 2210-F for farmers and fishers).
Enter any penalty on line 38. Add the penalty to any tax due and enter the total on line 37.
However, if you have an overpayment on line 34, subtract the penalty from the amount you would otherwise enter on line 35a or line 36. Lines 35a, 36, and 38 must equal line 34.
If the penalty is more than the overpayment on line 34, enter -0- on lines 35a and 36. Then, subtract line 34 from line 38 and enter the result on line 37.
Don’t file Form 2210 with your return unless Form 2210 indicates that you must do so. Instead, keep it for your records.
Because Form 2210 is complicated, you can leave line 38 blank and the IRS will figure the penalty and send you a bill. We won’t charge you interest on the penalty if you pay by the date specified on the bill. There are situations where the IRS can’t figure your penalty for you and you must file Form 2210. See Form 2210 for details.