Firstly, the mother cannot be liable - the liable persons will be the two joint-owners.
Secondly, is the mother severely mentally impaired? If she is, then she will qualify for a status discount; if she isn't, then she can't attract a discount.
The daughter, as you say, attracts a discount, and if both parents are registered as carers (both presumably looking after the mother) then they get a discount.
So, if all four members of the household are disregarded, then the discount is 50%. However, if the mother isn't severely mentally impaired, then there are only three people disregarded, and the discount will be 25%.
|