Chancellor Rishi Sunak is facing calls to “come clean” on his family’s financial affairs after it emerged his wife benefits from a tax-saving scheme.
Akshata Murty has non-dom status, meaning she does not have to pay UK tax on income earned abroad.
Ms Murty earns money from shares in an Indian software giant founded by her billionaire father.
Her spokeswoman said she pays all tax due in the UK – but Labour called for “complete transparency”.
Sir Keir Starmer said Rishi Sunak had “very serious questions to answer” about his family’s finances.
“If it now transpires that his wife has used schemes to reduce her tax, while he’s been increasing taxes on working people, that’s breathtaking hypocrisy,” said the Labour leader.
It “just goes to show just how out of touch this chancellor is” at a time when taxes were increasing for millions of workers, he added.
Liberal Democrat Treasury spokesperson Christine Jardine said: “Sunak now needs to come clean about which country his family pays tax in abroad and if it is a tax haven.”
Business Secretary Kwasi Kwarteng defended Mr Sunak, saying it was “completely unfair” to scrutinise the tax affairs of Ms Murty, “who is not a politician”.
He also rejected opposition claims that Ms Murty was “sheltering” from UK taxes.
He told BBC Breakfast: “I think she’s been very clear, she’s been very transparent, the Chancellor’s been very transparent, and this non-dom status has been part of the UK tax system for more than 200 years.”
When asked about the criticism of Mr Sunak over his wife’s tax affairs, Prime Minister Boris Johnson said: “I think it’s very important in politics to keep people’s families out of it.”.