My husband is currently a bankrupt. His mother changed her will prior to him becoming bankrupt, disinheriting him in favour of his son (her grandson, my stepson). My mother in law has since died and my stepson is due to inherit. If he transfers any money to me (not my husband) could that be viewed by the trustee as concealing assets etc.
Depends. For example, is your stepson an adult?
This situation can unfold quite differently if your stepson is, say,
aged 35 and a reasonably sophisticated adult, or, say,
aged 10, with no real idea what's going on.
In the latter case, the Trustee may well think that the bankrupt is
using the child as camouflage to evade the Trustee.
Proof that it is otherwise will lie with the bankrupt.
Mostly, subject to certain ifs and buts,
a person can make a testamentary gift, of whatever they want,
to whomever they want.
A testator is not obliged to, say, leave money to a bankrupt in order to (help) pay that bankrupt's debts.
Indeed, it is not all that uncommon these days for testamentary gifts to be
conditional upon a beneficiary
not being a bankrupt.
It's also not all that uncommon for a testator to bypass a... wayward*... grown child
in favour of (so to speak) "looking after" a grandchild/ grandchildren.
This is something a testator can do as of right, and they do not need to justify it.
That being said, an aspiring beneficiary - such as bankrupt adult son - might make a thing called a "Family Provision Claim".
This is an application brought where that applicant thinks, and can show (which is not at all easy),
that they have some sort of claim on the estate in terms of support or avoiding hardship.
You'll need formal legal advice about this in your case.
The main game is to be certain that the will is valid.
If it isn't, then the intestacy rules will automatically apply, and your husband may inherit that way.
That might put the inherited money (or assets) within the reach of the Trustee.
If you already have a Grant of Probate, then you're already OK with this aspect.
If not, then get to it, without further delay.
Once the money is in in your stepson's hands, "free and clear" so to speak,
then it's his to spend, invest, or gift, however he wants.
This can certainly include giving some of it to you, if he chooses to.
He is not
obliged, legally, morally, ethically, or culturally, to help out his father at any point.
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* By "wayward", I mean any or all of, but not only,
bankrupt, convicted of something, addicted, ill in some relevant way, or,
simply in the testator's opinion, "not very good with money"