Sajid Javid is planning to deliver his first Budget days after the Brexit deadline.
The Chancellor said he would use the announcement to "set our the plan to shape the economy".
The Budget will be held on November 6, less than a week after the UK's planned departure date from the European Union on October 31.
Mr Javid posted on Twitter this morning: "On 6th November I'll deliver Britain's first Budget after Brexit and set out our plan to shape the economy and deliver our infrastructure revolution."
In a statement, he added: "This is the right and responsible thing to do – we must get on with governing."
The announcement comes amid debate over whether the UK will secure a Brexit deal with the EU.
UK and EU officials will resume talks in the Belgian capital on Monday, with the prospects of an agreement in time for Britain to leave with a deal on October 31 in the balance.
The EU's chief negotiator, Michel Barnier, said "technical-level" talks between officials over the weekend had proved "constructive".
But in a briefing to ambassadors of the remaining EU27 on Sunday in Brussels, he said that "a lot of work remains to be done".
Boris Johnson told senior ministers that, while a "pathway" to a deal could still be seen, there was "still a significant amount of work to get there".
In a Cabinet conference call, he said they still had to be prepared to leave on Halloween without a deal.
