"This is not serious government", Sunak told Johnson as per one insider.
The 1.25 percent rise in National Insurance, which will be introduced in April, will be paid both by employers and employees and is designed to help the country's economy, which suffered one of the worst financial crises since the Second World War.
Commenting on the decision Rishi Sunak said the following:
"I did not get into politics to have to put up people's taxes. I am a Conservative chancellor. But I also take seriously my responsibility to you, our kids, and to the nation's finances, making sure we fix the problems. And with coronavirus, our borrowing went up to levels we haven't seen since World War Two. And our debt was forecast to just keep growing and growing into the future. I didn't think that was morally right. I didn't think it was economically responsible".
"Taxes are at an abnormally high level. The Conservatives need to get back to being a tax-cutting government. We need supply-side reform and government efficiency to ensure growth and pay for tax cuts. But the national insurance rise is a matter for the chancellor", said Minister of State for Brexit Opportunities and Government Efficiency Jacob Rees-Mogg.
Aside from that, the media tipped Rishi Sunak to become the country's new prime minister when Johnson faced calls to resign in response to the "Partygate" scandal. Johnson, as well as other members of his Cabinet, were pictured partying during COVID-19 lockdowns, which was a violation of the very rules the authorities themselves set. Media speculated that photos were leaked by Sunak's team.
Johnson has dismissed reports of a rift, saying Downing Street and the Treasury are "working together in harmony".