@aninkling wrote:
So, are the capital gains from the financial stuff ignored by all? Should a 1041 be filed for the estate with the estate ID for the 2018 year declaring those capital gains?
The capital gains are not "ignored by all" but will be reported on the income tax return for the estate, when it is filed. Since the stock transactions transpired after your father's death but appeared on a 1099-B with his social security number, he received any net gains as a nominee (i.e., the proceeds were treated as belonging to him when they actually belonged to his estate).
In sum, the post-death capital gains need to be reported on the estate's income tax return.
