@converseandjeans
People already pay tax on their pensions.
What about when you get old?
The personal tax free allowance has doubled in a decade, so there are huge numbers of pensioners who have been taken out of income tax altogether, i.e. most people living on the basic old age pension. They're not taxed on other state benefits, such as housing benefits, free prescriptions, etc.
It's the pensioners with other income who pay tax, at the same income levels as everyone else (same tax free allowance).
Difference is that pensioners don't pay NIC unlike other workers, they don't pay student loan repayments, they don't lose child benefit if their income is over £50k.
It's the middle aged, middle income workers who get screwed for "tax" rises, time and time again. We need to spread the burden more to get more tax revenue from those with higher incomes, and that includes pensioners with gold plated pensions, investment portfolios, buy to let properties, etc. There's no justification at all why NIC is only borne by "workers" and not by others with higher incomes from non-working sources.