From April 2022, workers will be charged a higher rate of National Insurance at 1.25%. This will then turn into a health and social care levy from 2023, which all employees will contribute towards - including pensioners.
Research by Income Tax Calculator UK shows that people earning £100,000 will pay seven per cent of their overall salary to NI - the same as those on £20,000.
It says £30,000 and £50,000 earners will be hardest hit by the 1.25 per cent NI hike, with the increase meaning that they will pay nine percent and ten percent of their salary towards NI respectively.