"Let's combine Income Tax
and NIC.."
been talked about for years but see
Could merging National Insurance with income tax have worked? | ICAEW Economia
" one big problem would be knowing where to start. And that’s not the only poser. At the end of the day, any changes have to be approved by politicians constantly glancing over their shoulders to see what voters think. Most plans to align NICs and income tax creates winners and losers – and any government will want to know how that will play out with its key supporters."