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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

Inheritance with grandchildren and step grandchildren

359 replies

DogsInThePaddlingPool · 14/08/2026 12:01

My mum has recently told us she has updated her will. She has decided not to leave anything to me or my siblings but to leave it to our children instead. She has explained that as we are all settled and financially stable, she wants to help the younger ones who it will be harder for.

I have 2 children, my brother has 3 children and my sister has 2 children and 2 step children. My mum is leaving equal amounts to her 7 biological grandchildren and then a much smaller amount to my sisters step children. The step children have been in our family since they were 4 and 5 and are now 19 and 20.

My sister has had a row with my mum because she feels her step children should get the same as the rest of the grandchildren. My mum isn’t budging.

My sister wants me and my brother to tell our mum that she is being unfair. We don’t want to get involved and have said it’s her money and her decision.

My sister hasn’t made any contact with any of us for the last month since we said we wouldn’t side with her.

Are we being unreasonable? Is my mum being unreasonable?

OP posts:
SixAndJuliet · 14/08/2026 15:17

DogsInThePaddlingPool · 14/08/2026 15:15

Are you here to cause drama? It sounds like it.

My mum just wants to leave her money mostly to her GC, but with some to step children that she doesn’t know that well. I don’t think that should be controversial. The amount she is leaving them isn’t small imo.

I’ve said I’m upset. I am trying to keep in touch with my sister. I sent a message about A levels and a card and gift, so has my brother, That is hardly saying we are ok with her being upset. Don’t even try coming for my kids when their first response was they don’t want to think of their granny dying. But unempathetic? Right.

You have literally slagged off my entire family. I won’t be replying further to the drama you are trying to make.

She’s right tho.
There is a level of malice involved to rewrite a will to deliberately ensure that two children don’t benefit indirectly from their parent.

DogsInThePaddlingPool · 14/08/2026 15:21

SixAndJuliet · 14/08/2026 15:17

She’s right tho.
There is a level of malice involved to rewrite a will to deliberately ensure that two children don’t benefit indirectly from their parent.

It’s not the parents money to give them though. Thats such an entitled way of looking at it in my opinion, as if the money is already yours. This isn’t my sisters money to share out, it’s my mums.

OP posts:
SandyHappyPerson · 14/08/2026 15:22

DogsInThePaddlingPool · 14/08/2026 15:04

My brother thinks that maybe we have just found out who our sister really is. He thinks if she is prepared to have a rift over this, more fool her. If she now treats her bio children differently to favour her step children, then she really is an arse isn’t she.

My mum shouldn’t have to appease my sister. Her SC are still inheriting.

If she now treats her bio children differently to favour her step children, then she really is an arse isn’t she.

Wow.. her and her husband are responsible for 4 children between them, if two are given an early leg up to get on the property ladder etc.. do you really think they will sit back and say 'thems the breaks' to the other two they are responsible for .. of course they will end up evening things out, it's natural if you want all your children to do well to give them a leg up, it's not 'arse' behaviour at all, it's being a parent.

There is nothing 'fair' about your mum's legacy, if she wanted it to be fair she would split it 3 ways and wish everyone well.

ajandjjmum · 14/08/2026 15:23

I can't believe that people don't discuss these things, so that everyone knows the thoughts behind decisions, and if there are genuine reasons to re-think, there is time for the grandparent (or whoever) to do so.

My DP told DB and I some years ago that they considered us to be financially stable, so thought their estate should be left to the grandchildren.

We were happy with that, and it enabled our kids to buy their first properties, and pay off some uni fees, at a much earlier stage than they might otherwise have been able to do.

Our two DC are shortly to get married - no grandchildren yet - but we have discussed with both of them that if we decide to skip a generation, their respective DC will each get 50% shared between them. Our DC thought this was absolutely the fairest way to do things.

Talk - so there are no surprises.

DogsInThePaddlingPool · 14/08/2026 15:27

Whyherewego · 14/08/2026 15:14

Your mum could leave your and brother shares to your respective kids and then DSIS share to her. She can then do what she wants to vary the will. This then accounts for the possible scenarios ( dsis gets divorced and remarried or whatever ). Just a thought

But then my mums grandchildren, my sisters children, would get less than my children and my brothers children. My mum obviously doesn’t want that as she would have done things differently.

I suppose the issue is that although my sister sees the step children as her children, they aren’t, and my mum doesn’t think of them as grandchildren. I do think my sister needs to accept that. You can’t make the wider family feel the same. My mum really has been generous in her will to them though.

My best friend has step children, and her husband is step dad to her children. I have spoken to her and her husband about this at length and they both think my sister is wrong and entitled. They treat the children the same day to day, but on things like inheritance, there is a difference due to biology.

OP posts:
Roastiesarethebestbit · 14/08/2026 15:27

What do the step
children stand to inherit from
their own biological grandparents and parents?

And does your sister expect her biological
children to inherit from her step children’s grandparents?

I wonder how the step grandchildren feel here. If they consider their step grandparents equal to their biological grandparents. I wonder if there was no money involved at all, if the step grandchildren would mind being considered ‘only step’.

frontdoory · 14/08/2026 15:28

Northernlassie123 · 14/08/2026 14:50

Agree !! inheriting a bit more is an advantage that slightly makes up for not having been brought up by both parents in the same household.

I'm sure the double holidays more than makes up for it.

A DC and their stepsibling living under the same roof I'm sure have it equally tough at times. Less than ideal for stepsibling skipping between households, but also less than ideal knowing your parent has a kid to someone else.

Also the DC weekly routine will be largely dictated by the routine of the stepsibling. Their routine will just be formed around that.

JaspersCarrott · 14/08/2026 15:28

Everyone seems to have an opinion on inheritance and step children, and that's fine - but its also fine that the OP's mum has an opinion on what she what's to leave in her Will.
For all we know OPs mum may need to pay for care later in life, and then there may not BE any inheritance....

aCatCalledFawkes · 14/08/2026 15:29

DogsInThePaddlingPool · 14/08/2026 15:01

None of my sisters children or stepchildren have both parents in the same household. The bio children saw their mum and dad 60/40 ish. The step children lived with their mum most of the time and saw their dad and my sister some weekends and holidays.

How is your sisters relationship with her partner? These sort of situations scream that she is trying desperately make things equal, perhaps because her partner is unhappy and putting pressure on her due to his kids inheriting different amounts?
When I lived with my ex, I absolutely refused to put his daughter in my will (we were tenants in common, I had a bigger deposit given to me by my parents). It caused no end of problems. It was always been thrown in my face. When we split up he still tried to take me to court for more money than was his.

MrsTerryPratchett · 14/08/2026 15:31

DogsInThePaddlingPool · 14/08/2026 15:15

Are you here to cause drama? It sounds like it.

My mum just wants to leave her money mostly to her GC, but with some to step children that she doesn’t know that well. I don’t think that should be controversial. The amount she is leaving them isn’t small imo.

I’ve said I’m upset. I am trying to keep in touch with my sister. I sent a message about A levels and a card and gift, so has my brother, That is hardly saying we are ok with her being upset. Don’t even try coming for my kids when their first response was they don’t want to think of their granny dying. But unempathetic? Right.

You have literally slagged off my entire family. I won’t be replying further to the drama you are trying to make.

It's your thread so I'll leave. Fair enough.

But my advice is to think calmly about how this could all have happened if good communication, healthy family relationships, and kindness were prioritised.

SixAndJuliet · 14/08/2026 15:31

DogsInThePaddlingPool · 14/08/2026 15:21

It’s not the parents money to give them though. Thats such an entitled way of looking at it in my opinion, as if the money is already yours. This isn’t my sisters money to share out, it’s my mums.

Exactly tho, it’s just so unkind and controlling. Instead of just leaving the money to her 3 adult kids as is the norm, she’s thought hang on, I don’t want to risk that my daughter might give some of the money to her step children who she loves so I’ll disinherit her regardless of the trouble that causes.

Joliefolie · 14/08/2026 15:32

At least three of the children are very close in age (you say 19 and 20 and presumably 18 if one has just got their A level results). I think it's understandable for your sister to want all of her children to feel that they are equally valued members of the family. Your mum clearly doesn't and has deliberately set about showing that (as is her right of course).Your sister is hurt that you won't stick up for her. I would say give her some time, it's only been a few weeks, to process it all and work out how she can make peace with this because this feels very cruel to her. But you and your brother calling her an arse and deciding you've just found out who she really is etc. suggests your relationship was simply not as close and loving as any of you would have believed anyway,

Ordonot · 14/08/2026 15:33

Your mother should have split the money between her 3 kids and let each of them decide what to do with their share, I think it's awful to treat step kids differently to bio kids.

SandyHappyPerson · 14/08/2026 15:34

DogsInThePaddlingPool · 14/08/2026 15:21

It’s not the parents money to give them though. Thats such an entitled way of looking at it in my opinion, as if the money is already yours. This isn’t my sisters money to share out, it’s my mums.

It's not entitled for someone to want their family to treat their children equally though is it? If your sister treats them all equally, then the rest of you should too, it really is that simple. It's not up to anyone else in the family to determine their 'worth'.

Your mum disagrees, so has written her will specifically to block her from being able to treat her children as equals.

InterIgnis · 14/08/2026 15:34

SandyHappyPerson · 14/08/2026 15:22

If she now treats her bio children differently to favour her step children, then she really is an arse isn’t she.

Wow.. her and her husband are responsible for 4 children between them, if two are given an early leg up to get on the property ladder etc.. do you really think they will sit back and say 'thems the breaks' to the other two they are responsible for .. of course they will end up evening things out, it's natural if you want all your children to do well to give them a leg up, it's not 'arse' behaviour at all, it's being a parent.

There is nothing 'fair' about your mum's legacy, if she wanted it to be fair she would split it 3 ways and wish everyone well.

They each have two they’re responsible for.

Such things as financial disparity between children is extremely common in blended families, and is indeed the breaks.

If OP’s sister chooses to pour her resources into her husband’s children over her own then she would fully deserve her children having little or nothing to do with her.

waitinginwonderland · 14/08/2026 15:35

AuntieBiotics · 14/08/2026 15:06

This is total nonsense. Every single person ever born has four biological grandparents.

Whether those grandparents are alive/dead or involved/not does not mean that they do not exist.

Not in an inheritance conversation they don’t? How exactly was I suppose to inherit from my paternal grandparents who died 13 and 5 years before I was conceived? I had two biological grandparents at the time of my birth.

user1471600850 · 14/08/2026 15:37

Out of interest how old is your Mum? Is this inheritance likely to be any time soon?

waitinginwonderland · 14/08/2026 15:37

OnlyMabelInTheBuilding · 14/08/2026 14:36

That’s entirely up to you. You can’t expect your family to do the same.

SDGC are getting less here because they are SDGC. She is being kind and including them. They don’t have to be treated the same; she may not see them as the same at all.

Again, it’s not for wider family to ‘equalise’ or ‘make fair’ for SDC. Any unfairness is the result of their parents splitting, it’s not on anyone else.

That’s very true, but if someone can’t treat the children of your family equally you are also at liberty to cut contact like OPs sister. I wouldn’t want my DSD around people who would “other” her for not sharing my DNA and neither would her Dad. Luckily we don’t have this on either side as both my family and her stepdads family aren’t like this!

InterIgnis · 14/08/2026 15:38

SixAndJuliet · 14/08/2026 15:31

Exactly tho, it’s just so unkind and controlling. Instead of just leaving the money to her 3 adult kids as is the norm, she’s thought hang on, I don’t want to risk that my daughter might give some of the money to her step children who she loves so I’ll disinherit her regardless of the trouble that causes.

It’s her money to control. The trouble has been caused by the sister, who thinks she’s the one entitled to control it.

It isn’t malicious to want your own family to be the ones benefiting from your wealth. As it is, the mother didn’t change her will to exclude the stepchildren, she changed it because her children are already comfortable and she wants the younger generation to benefit. Why would it even have occurred to her to treat her stepchildren as her grandchildren when they’re not?

BeUmberMember · 14/08/2026 15:38

If you make any or all of your children executors of your will, instead of using solicitors, you save massive solicitors fees and lengthy waits for probate etc to be granted. However, if you do this it will be easier for everyone if each executor is given a copy of the will alongside lodging the original with the solicitors. My mum did this for me and my siblings, one was my step brother. We were all joint executors but as we lived in different parts of the country we agreed that one sibling with the best financial knowledge and experience and who was willing, could sort the will with our written permission. We all received photo copies of documents and all received our inheritance which included a house sale within 4 months. But we all knew the contents of the will beforehand and all totally agreed that it was entirely my mother's decision how she had chosen to distribute her money and property.

Zapx · 14/08/2026 15:39

I can’t see that your Mum has done much wrong here… If hypothetically your sister had 20 step kids such that the amount going to your mum’s biological grandkids had dwindled to nearly 0, I could well see that there would be resentment from the biological grandkids.

Equally if step kids were already millionaires from their side of the family, would DSis feel they should share with her biological kids? I bet the step kids wouldn’t!

My Grandmother is deliberately only giving to her own children, not her grandchildren, as one of her own kids had many more children than the other. I can totally see the fairness in this, as otherwise the child with only 1 child would inherit far less in their branch of the family tree. If your mum doesn’t trust what would happen to it if she did that though, which it sounds like she doesn’t, I think her way is pretty fair really.

DogsInThePaddlingPool · 14/08/2026 15:41

aCatCalledFawkes · 14/08/2026 15:29

How is your sisters relationship with her partner? These sort of situations scream that she is trying desperately make things equal, perhaps because her partner is unhappy and putting pressure on her due to his kids inheriting different amounts?
When I lived with my ex, I absolutely refused to put his daughter in my will (we were tenants in common, I had a bigger deposit given to me by my parents). It caused no end of problems. It was always been thrown in my face. When we split up he still tried to take me to court for more money than was his.

She doesn’t talk a lot about her relationship but I know her children don’t like her husband very much due to things they have told my children. My brother doesn’t like her husband either. She could be under pressure from him I suppose.

OP posts:
Anxioustealady · 14/08/2026 15:41

frontdoory · 14/08/2026 15:28

I'm sure the double holidays more than makes up for it.

A DC and their stepsibling living under the same roof I'm sure have it equally tough at times. Less than ideal for stepsibling skipping between households, but also less than ideal knowing your parent has a kid to someone else.

Also the DC weekly routine will be largely dictated by the routine of the stepsibling. Their routine will just be formed around that.

Don't be ridiculous, double holidays in no way make up for having divorced parents and split homes. Lots of stepchildren aren't even taken on all the family holidays. It's shit being a stepchild, still doesn't mean you're entitled to inherit from anyone.

DogsInThePaddlingPool · 14/08/2026 15:48

SandyHappyPerson · 14/08/2026 15:34

It's not entitled for someone to want their family to treat their children equally though is it? If your sister treats them all equally, then the rest of you should too, it really is that simple. It's not up to anyone else in the family to determine their 'worth'.

Your mum disagrees, so has written her will specifically to block her from being able to treat her children as equals.

I don’t agree. Just because someone marries someone else with children and sees them as their children, doesn’t mean the extended family have to sign up for that.

I have friends that used to have step kids, and when they split up, they no longer saw the children. My friends mum got very attached to her step GC and never even got to say goodbye. There is a difference for that reason.

My mum has been very kind to the step children since she’s known them and has included them. She has chosen to also include them in her will, just not to the same extent as her GC.

OP posts:
aCatCalledFawkes · 14/08/2026 15:48

DogsInThePaddlingPool · 14/08/2026 15:41

She doesn’t talk a lot about her relationship but I know her children don’t like her husband very much due to things they have told my children. My brother doesn’t like her husband either. She could be under pressure from him I suppose.

This makes the most sense. Having been in a blended family and absolutely hated it, trying to make everything equal becomes a constant. My ex-partners son is her mothers only child, she will inherit all of her estate, 1/3 of her grandparents estate, more possibly from her Dad's side. The idea she then needed a cut in mine or my parents money caused so many rows.

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