I am the trustee of an irrevocable trust. I live in California. I have control over a beneficiary trust for a younger relative who resides in Oklahoma. For his trust tax return, which state should I download so I can generate a K-1 for him ? I need California for my own beneficiary trust because I reside in California. But for the relative's trust return, should I also buy the Oklahoma state ? The cost isn't an issue, I just want to do the taxes correctly.
Also, can California state and Oklahoma state co-exist in Turbotax business, and then can I select the one that I wish to use for each tax return ?
