I have entry Schedule 2 line 17h as 20% of the amount of BOX 12 Z and this amount is a lot. Is there any information on calculating this amount other then "The tax is 20% of the amount required to be included in income plus an interest amount determined under Section 409A"?
The amount in 12 Z was already taxed and accounted for in box 1.
Any help on the calculation would help.
