From Sky politics
Number 10 rejects idea plan to scrap National Insurance is 'unfunded tax cut'
Downing Street has rejected Labour's characterisation of plans to scrap National Insurance contributions as an unfunded tax cut.
However, Number 10 suggested the measure would not be costed by the Office for Budget Responsibility at the next fiscal event.
After Sir Keir Starmer attacked Rishi Sunak's "completely unfunded £46bn promise to scrap National Insurance" during Prime Minister's Questions, a spokesman said: "That is obviously not a costing made by the OBR."
Asked what the real price tag is, they added: "That's a question for the OBR which will assess policies as and when they are announced at future fiscal events."
But he suggested that would not happen at the next event, saying: "It's government policy, but it doesn't have a specific timetable and that is why the OBR is not costing it.
"We're going to make progress on it over a period of time. We'll make progress on this ambition at a number of fiscal events.
"As and when that progress is made, the OBR will put a figure on the announcements as and when they are made. But that number is not a static figure."
The spokesman added: "We've always said that we will do so in a manner that is prudent.
"We want to make significant progress in the next parliament."