I don't think one of us understands something. Are you asking where the slight rise in the tax band for people earning over £80k would be funded? If so it doesn't need funding people that have money pay more and raise funds. I think I've missed something.
Not sure I understand your point. Is there a particular consequence of tax increases you’re worried about or are you alluding to diminishing revenue returns generally (and all that ‘Laffer curve’ stuff)?
Funded? They just pay more, I don't think it's going to eat into much other than a slight amount of savings or a few less drinks on holiday.