Non-doms, as they are sometimes called, only pay UK tax on income produced within the country.
Regarding money earned abroad, they are not required to pay any taxes to the UK.
Akshata Murty, the wife of Rishi Sunak, is arguably the most well-known non-dom in the UK; nonetheless, she pledged two years ago to pay UK tax on her foreign earnings.
The non-dom arrangements have long been supported by Conservatives, such as Chancellor Jeremy Hunt, who claims they made the UK a desirable environment for wealthy and highly sought-after individuals to choose to live and work.
Mr. Hunt is steadfast in his resolve to prevent his policies from undermining this.
However, in order to be able to finance tax cuts for millions of individuals, Treasury officials are looking into a number of ideas to either increase tax revenue or decrease spending in advance of the Budget next week.