The Treasury said Prime Minister Jeremy Hunt would lay out parts of his medium-term fiscal plan later today.
In a statement, the Finance Ministry said the prime minister was fast-tracking the plans, which will be fully announced on October 31.
It said it was monitoring conversations with Prime Minister Liz Truss over the weekend and a meeting with the governor of the Bank of England and the head of the Debt Management Office on Sunday night.
Ms Truss is faced calls to resign from three Tory MPs after the economic crisis caused by a small budget.
Tory MPs Crispin Blunt, Andrew Bridgen and Jamie Wallis have publicly stated that they believe she should resign, while Labor leader Sir Keir Starmer has called for Ms Truss to come out before parliament and accuse her as “incumbent but not in power”.
The Daily Mail reports that Tory MPs will try to oust Ms Truss this weekend, with more than 100 ready to send a letter of no confidence.