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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

AIBU to include stepchildren in our family foundation benefits?

275 replies

Tonotcauseissues · 27/09/2026 08:57

I have done a nc for this. We are setting up a family foundation- it will pay for school fees, uni fees, driving lessons, first car, 3 years insurance and a gap year. The children of the family will join the board age 18 and be mentored until 25 where they gain a seat on the company board. We have said it is for biological and adopted children. But after all these blended family threads I don’t want to create issue if our children have step children. So thinking we offer the same the foundation gives(car, driving lessons, uni fees etc) to step children if married or living with our descendants but not the seat on the board- does this seem reasonable so children living in the same house get the same? Just reading the post about the car for nephews etc and got me thinking. And I know this is a privileged position but I want to get it right as once the deeds are written it can’t be changed so don’t want to cause issues in years to come that I haven’t thought through.

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Crunchymum · 27/09/2026 11:47

As you've namechanged are you happy to be more specific about the current step children situation @Tonotcauseissues ?

How many step children are there at the moment, how long have they been part of the family and to whom are they part of the family via? As many, many PP have said there is a huge difference if say your son has been married to someone for 18 years and has raised her 20yo child as his own versus your daughter who had recently married a man who has teenage children they only see every other weekend?

I don't know how it all works but can the trusts be set up to account for your current family situation but with rules in place going forwards? So if all current step children are long standing family members then they all get a trust but for the next generation it is bio and adopted children only (with some caveat the adoption is for under 5yo children only? Ie: older step children cannot be adopted to circumvent the bio / adoption rule)

Although I guess by including even this generation of step children you already move outside of the "bloodline".

To me it hinges on how the step children are related and how long they have been in the family.

titchy · 27/09/2026 11:49

What the fuck’s a family foundation? Do you just mean a tax efficient trust as a way of giving a stack of cash to your grandchildren? Why do they all need to join a board? If you’ve already made the decision as to who it goes to and for what expenses, what decisions in this board, of cousins who may not get along, going to make? If it’s to be spread down further generations just let the parents decide whether to be generous to their step children. Don’t overcomplicate it.

Daisymail · 27/09/2026 11:50

BananaPeels · 27/09/2026 09:15

Personally I think you open a can of worms when you include step children. A step child who comes into a person’s life when 2 years old of very different to one who comes into their life aged 17. Also a step child who lives full time with a family is different to one who only lives with the step parent once a fortnight. I would honestly not include them. It’s cleaner. Since all this is being funded by the trust then the step parent could afford to pay for all this themselves surely if they wanted to make it even.

This.

Tonotcauseissues · 27/09/2026 11:51

titchy · 27/09/2026 11:49

What the fuck’s a family foundation? Do you just mean a tax efficient trust as a way of giving a stack of cash to your grandchildren? Why do they all need to join a board? If you’ve already made the decision as to who it goes to and for what expenses, what decisions in this board, of cousins who may not get along, going to make? If it’s to be spread down further generations just let the parents decide whether to be generous to their step children. Don’t overcomplicate it.

No I don’t- we are not in the UK and we will pay wealth tax on the foundation and the company board runs the family businesses and assets of the foundation.

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mumumental · 27/09/2026 11:51

Tonotcauseissues · 27/09/2026 09:08

That is should be bio children alone on proof of DNA

So not even adopted children ? That seems unlikely, given they are legally children of the family. Doubtful of that advice.

Tonotcauseissues · 27/09/2026 11:52

mumumental · 27/09/2026 11:51

So not even adopted children ? That seems unlikely, given they are legally children of the family. Doubtful of that advice.

We are not in the uk and excluding adopted children is allowed but not an option we want. I am asking for family dynamic advice.

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Umyeah · 27/09/2026 11:57

The trouble with step children is that if their parent divorces then they instantly become no relation to you at all. And very often that’s enforced by the parent themselves. So the area is just too grey. If they’ve been in the family for 5 years? What if it’s 4 and a half? If they’ve were under 10 when they became a stepchild? What if they were 7 but the parents didn’t get married until they were 11?

it’s all so complicated. What if they get all the benefits at 18/25 and their parents divorce the next day?

step children are different, and I think it’s OK to acknowledge that. It’s just life - the parents creating the blended family need to understand that, and it’s their responsibility to explain it to their children. That’s just how it is, it doesn’t have to be the travesty MN likes to make out.

Tonotcauseissues · 27/09/2026 11:59

HouseBee · 27/09/2026 11:35

And the other side of the coin are the potential tension created by having to ‘prove’ the child is theirs….

Its a very thorny issue

Yes indeed- our children have never been DNA tested my husband knows they are his.

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Tonotcauseissues · 27/09/2026 11:59

Umyeah · 27/09/2026 11:57

The trouble with step children is that if their parent divorces then they instantly become no relation to you at all. And very often that’s enforced by the parent themselves. So the area is just too grey. If they’ve been in the family for 5 years? What if it’s 4 and a half? If they’ve were under 10 when they became a stepchild? What if they were 7 but the parents didn’t get married until they were 11?

it’s all so complicated. What if they get all the benefits at 18/25 and their parents divorce the next day?

step children are different, and I think it’s OK to acknowledge that. It’s just life - the parents creating the blended family need to understand that, and it’s their responsibility to explain it to their children. That’s just how it is, it doesn’t have to be the travesty MN likes to make out.

All good points

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SleeplessRoads · 27/09/2026 12:09

Discogirl23 · 27/09/2026 10:27

Follow the professional advice. While it sounds harsh now it is ultimately in yours and your family’s interests. There will be scenarios that you have not considered which the professionals will have and they could cause real difficulties at best and financial risk at worst. I’m speaking as someone who has been in a prolonged legal battle with SF over DM’s will which is nowhere near as complex as this. Professional distance without emotional baggage is why you seek expert advice. Please take it. If your family is wealthy I’m sure you can make ad hoc arrangements to help any step children if required.

Strong disagree on this. I think she’s had bad professional advice. I’ve seen and advised many, many structures like this and never seen one that requires DNA testing.

Tonotcauseissues · 27/09/2026 12:11

There are lots of provisions for off the rails, long term and if no further generations it become charitable

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Tonotcauseissues · 27/09/2026 12:12

And the answer s

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MenopauseSucks · 27/09/2026 12:13

This might be a bit brutal however in my eyes I think it’s fair…

I believe it should be limited to biological & adopted children for all benefits & a seat on the board. This includes half-siblings.
HOWEVER another child of the family, for example nieces/nephews or a current stepchild could be given a sum of money at the board’s discretion.
Stepchildren are only children of the family during their parents’ marriage. Financial help for them can be negotiated as part of a divorce financial settlement & should not involve the foundation.

Tonotcauseissues · 27/09/2026 12:16

MenopauseSucks · 27/09/2026 12:13

This might be a bit brutal however in my eyes I think it’s fair…

I believe it should be limited to biological & adopted children for all benefits & a seat on the board. This includes half-siblings.
HOWEVER another child of the family, for example nieces/nephews or a current stepchild could be given a sum of money at the board’s discretion.
Stepchildren are only children of the family during their parents’ marriage. Financial help for them can be negotiated as part of a divorce financial settlement & should not involve the foundation.

One of the main points of the foundation is to stop any family assets being part of a divorce settlement

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Tonotcauseissues · 27/09/2026 12:16

SleeplessRoads · 27/09/2026 12:09

Strong disagree on this. I think she’s had bad professional advice. I’ve seen and advised many, many structures like this and never seen one that requires DNA testing.

so how do you prove paternity?

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Tonotcauseissues · 27/09/2026 12:18

Crunchymum · 27/09/2026 11:47

As you've namechanged are you happy to be more specific about the current step children situation @Tonotcauseissues ?

How many step children are there at the moment, how long have they been part of the family and to whom are they part of the family via? As many, many PP have said there is a huge difference if say your son has been married to someone for 18 years and has raised her 20yo child as his own versus your daughter who had recently married a man who has teenage children they only see every other weekend?

I don't know how it all works but can the trusts be set up to account for your current family situation but with rules in place going forwards? So if all current step children are long standing family members then they all get a trust but for the next generation it is bio and adopted children only (with some caveat the adoption is for under 5yo children only? Ie: older step children cannot be adopted to circumvent the bio / adoption rule)

Although I guess by including even this generation of step children you already move outside of the "bloodline".

To me it hinges on how the step children are related and how long they have been in the family.

Edited

This is the thing we have none we have 2 daughters age 11 and 6 so this is all hypothetical

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Tonotcauseissues · 27/09/2026 12:19

And the answer another poster we can pay medical for health issues so any children with physical and mental tak health get support too.

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drspouse · 27/09/2026 12:22

Tonotcauseissues · 27/09/2026 12:18

This is the thing we have none we have 2 daughters age 11 and 6 so this is all hypothetical

Not sure if you saw my post above re same sex marriage and adoption, but I would include children of a non-marriage same sex partnership in jurisdictions where they are both allowed to be on the birth certificate - bearing in mind that a country that allows this is unlikely to go back but a child could move to a country where it isn't allowed.

Nemorth · 27/09/2026 12:22

what if one of your male children has a one night stand that produces a child? This child is not known about for 15 years as mother didn’t share the information (this is why I picked male having the one night stand!)

then came to you for funding?

titchy · 27/09/2026 12:22

Tonotcauseissues · 27/09/2026 11:51

No I don’t- we are not in the UK and we will pay wealth tax on the foundation and the company board runs the family businesses and assets of the foundation.

But what if your grandkids don’t want anything to do with the foundation? It’s seems rather controlling of you to require them to be part of it once they’re 25? What if they want to bum round the world smoking weed?

Are there not any similar forums wherever you are then as you’re not in the UK?

(As an aside given the number of posters MN has that turn out not to be UK based, there’s surely a massive business opportunity to someone to create a similar site to MN in other countries, particularly the US, where people would get responses from people who know the legal and cultural context of the post.)

Redpaisley · 27/09/2026 12:31

Tonotcauseissues · 27/09/2026 09:08

That is should be bio children alone on proof of DNA

What is their rationale for this?

PrizedPickledPopcorn · 27/09/2026 12:31

I wouldn’t include step children and would assume the family unit that is privileged enough to benefit from this will be able to level the playing field themselves. They could find their own money to match it, or choose to share it between the affected DC if that feels appropriate.

Tonotcauseissues · 27/09/2026 12:34

Nemorth · 27/09/2026 12:22

what if one of your male children has a one night stand that produces a child? This child is not known about for 15 years as mother didn’t share the information (this is why I picked male having the one night stand!)

then came to you for funding?

The wedlock provision originally suggested to us but that would have excluded our own children as we were unmarried.

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Bananacrepewithnuts · 27/09/2026 12:35

SuffolkBargeWoman · 27/09/2026 09:00

I'm intrigued that you're in a situation where you have enough money to do this, but not the expert external advice that would talk through all these issues with you.

Yes me too. How did you acquire that wealth?
X

Tonotcauseissues · 27/09/2026 12:35

Redpaisley · 27/09/2026 12:31

What is their rationale for this?

i would imagine it was to stop a male heir being duped by a child not his own inside or outside of marriage.

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