Originally Posted by
Skipname
Last month in UK I paid 397£ and my employer payed 524£ for national insurance.
So what? - that's got nothing to do with your contribution to the NHS.
(History lesson: Once Upon A Time NI was supposed to be how you paid for the entire welfare state - of which I think the largest chunk was the old age pension? - but it has long since lost the hypothecation and been subsumed into general taxation. It's now just a component of income tax by another name.)