article_snippet.sent: The average annual income is £59,600 - more than £30,000 above the average  gross annual salary.
article_snippet.sent: – have seen average income tax bills jump by 8 per cent in a year .
article_snippet.sent: With the tax rate at 45% for the highest earners, pockets are clearly being created - mainly, but not solely, around the capital - where income tax bills are far outstripping the national average.
highlights_snippet.sent: Bills averaged £16,900 - almost four times the national average of £4,363 .
  