Tax is thought of in terms on income tax. Income tax should be progressive as in the more you have the more that you pay either through income or wealth. When I started work I paid 33% tax on my income which i considered fair, under Thatcher that was dropped to 20%, it didn't make much material difference to me as I didn't earn that much but the optics are good if you are a believer in the RW ideology of a small state. Lowering taxes on those who earn most gives them a significant differential, one that arguably they do not need either as they are already well paid. The argument that those who earn most pay the highest percentage of the tax take so they should pay the same as everyone else as advocated by the flat tax rate mob would probably mean those with least facing tax rises to cover the loss of income in tax take from those with most. I see absolutely no problem with a graded income tax system where as the more you earn the more you pay, It is surely not above the wit of man to devise such a system especially with the new technology we have. For instance and this is just an example
earn up to £10k pay 10%
earn up to £20k pay 15%
earn up to £30k pay 20%
earn up to £40k pay 25%
earn up to £50k pay 30%
and so on until it reaches lets say 60% ...
The Tax that is a real bug bear for me is VAT, because that is regressive. It effects those who have the highest propensity to spend the most i.e the less well off. Cutting VAT now would be a real boon for those who are struggling with the cost of living and now we have left the EU we can do that.
Then there is corporation tax , that has to be overhauled and sorted out so that it is paid properly at a decent rate and not continually cut in a race to the bottom which only suits the corporations who take advantage of our infrastructure without giving anything back.