Lump-Sum Distributions
If you received a lump-sum distribution from a profit-sharing or retirement plan, your Form 1099-R should have the “Total distribution” box in box 2b checked. You may owe an additional tax if you received an early distribution from a qualified retirement plan and the total amount wasn’t rolled over. For details, see the instructions for Schedule 2, line 8.
Enter the total distribution on line 5a and the taxable part on line 5b. For details, see Pub. 575.
If you or the plan participant was born before January 2, 1936, you could pay less tax on the distribution. See Form 4972.