My mum and dad were married, my dad died 3 years ago. Their home was a house worth £230k. My dad jointly owned a house with his sister worth £400k, I can't remember how it was owned but I established ages ago his half should go to my mum but nothing has been done to this affect. Dad had no will.
My grandparents died and left their house to my mum and uncle, house is worth £500k. My uncle died without a will so his estate is going to my mum so half my grandparents house and his flat worth £200k.
So now essentially my mum has £1.13million in property, we'll ignore the money in bank accounts and stuff because it's not that much and is messy. She has no will.
Does my mum get my dads tax free allowance added to hers? So is IHT due on £805k or £480k? There was something about the tax allowance going up to £1m in some circumstances but I don't understand this.
I'm trying to understand what we would be on the hook for if she died with things as they are.