The 44-year-old North West Essex MP is expected to appoint the members of her shadow cabinet before Tuesday.
She did not immediately announce who would make up her top team, but suggested all of those who ran against her in the leadership race should be involved.
However, former Foreign Secretary James Cleverly revealed the day before the result that he would not be joining Ms Badenoch’s top team.
He will return to the backbenches along with former prime minister Mr Sunak, former deputy prime minister Sir Oliver Dowden, ex-chancellor Jeremy Hunt and former Brexit, health, and environment secretary, Steve Barclay.
In an interview after becoming party leader, Ms Badenoch told the BBC the partygate scandal was “overblown” and the government should not have fined people for “everyday activities” during lockdown.