My children trust and my FP are separate entities. Right now my FP is owned by my wife and i as limited partners and we are also the GP, and we have the FP prepare a k1 to send to us for our tax preparation
When the time comes (either as a gift or when my wife or I die), the children's trust will own a percentage of the FP. I presume then the process will be the same , k1 to children's trust and trust will then owe taxes or need to do a k1 and distribution to the children for tax reporting purposes.
The FP can live on forever as a separate investment vehicle, and the ownership of that investment company can be passed down as needed.
My current children's trust balances are small compared to the FP, and the trust investments don't generate a lot of taxable income , so taxes haven't become an issue yet.
The trusts have investments in multi family partnerships along with stocks ( Apple, google, Microsoft etc)
Trust tax rates are low for the first 3000 or 4000 of income, but after that, they get really high rates, so need to have a plan on optimizing taxes. My plan is to not make a lot of taxable income in tbe trusts, therefore taxes are not due until I sell assets or start to distribute the trusts to the children