I live in Brookings and am in the process of changing my current South Dakota estate plan. Because of the size of my estate, I am concerned about federal estate and gift tax. Does "portability" apply to my children?

Portability allows couples to take full advantage of each other's unused federal estate and gift tax exclusion amounts.

However, portability applies only to a surviving spouse.  Unused federal estate tax exclusions cannot be transferred to anyone but a surviving spouse.