The taxable amount of the withdrawal is entered on your tax return as ordinary income and taxed at your current tax rate. The federal income taxes withheld are entered on your tax return as a tax payment (just like from a W-2).
If you are were older then 59 1/2 when the withdrawal occurred or the distributions were made to you after you separated from service with your employer and the separation occurred in or after the year you reached age 55 then there will not be an early withdrawal penalty. If you were not age exempt from the early withdrawal penalty then the 10% penalty on the amount withdrawn will be assessed on your federal tax return as a tax liability.
If your total tax payments are greater than your total tax liability then you will receive a tax refund for the overpayment. If the total tax payments are less than your total tax liability then you will have taxes owed.
