in HB and CTB is that they impact on entitlement in more than just a statutory deduction e.g. under occupation and the single person discount. We nearly had a situation where a pensioner would have better off by having a working adult move in; and for up to a year too. Explaining that and the impact on Council Tax liability would have been fun (for those who like to confuse customers).
From an admin point of view, the only really workable change is to disregard non-deps for pensiones but that is very expensive of course. This is intended to be a half-way house.
