The Prime Minister of Britain Rishi Sunak paid 508,000 pounds ($641,000) in tax last tax year after his investment income exceeded his official salary, a report released today by his accountants showed.

Sunak is the richest prime minister in British history due to a combination of his previous career in financial services and the wealth of his wife’s family, whose father founded the Indian IT company Infosys.

Today’s three-page summary is the second time Sunak has released details of his tax situation since becoming prime minister in 2022.

The figures show Sunak earned £139,000 from his salary as a member of parliament, finance minister and prime minister between April 2022 and March 2023 and £2.1m from investments.

Of its investment income, £1.8m came from capital gains, up from £1.6m the previous year.

About 70% of the total tax Sunak paid was due to capital gains tax on the profit he made on investment sales, such as stocks.

Although Sunak is not required to provide details of his income, he agreed to do so in order to be more transparent about his personal financial situation.

The report by Evelyn Partners, the British prime minister’s accountants, says all of Rishi Sunak’s investment income and capital gains relate to a “single, US investment fund”.

The head of the British government came under fire this week after placing a £1,000 bet with presenter Piers Morgan on whether the government would succeed with its plan to send asylum seekers to Rwanda before the next general election.

The opposition parties said that the bet was offensive and that the ability for Sunak to make such a big bet so casually shows that he is out of touch with average voters.