i think tax rises are inevitable. Nearly £300 bn deficit, fivefold what was expected pre-covid. The treasury has (quite rightly) borrowed. The debt needs to be serviced, and there are a lot of things to pay for and benefits that can't be cut jsut yet so there will be immense pressure to raise tax revenue.
Unfortunately I think the working majority and those trying to raise a family will be shafted again in favour of the wealthier boomers...
Income tax is an easy way to raise the most revenue. It won't be the top 45% bracket, because each percentage point increase does not raise as much as the other brackets and you will lose many high earners abroad.
In theory it would be best to go for wealth, windfall, capital gains and inheritance taxes. The lockdown really highlighted the inequality here. It affected the poorest, homeless and younger most adversely - those starting out in jobs, those in front line jobs, those trying to raise a family. It benefitted the wealthiest and the oldest most. Obviously these are hard to enforce and opposed heavily by Tory types; the wealthiest squirrel away assets in trusts and offshore and second properties etc. Then there are also problems for genuinely cash-poor e.g. Londoners who own a house that grew in value but can't actually cough up the tax payment unless they sell their only home.
Not corporation taxes as i doubt Tory have the political will to do that (and also companies provide jobs)
Not SDLT because they want to support the housing market
VAT unlikely, when they want to stimulate spending and a recovery, but maybe later down the line or on selected goods and services