Government debt would rise over the next three years and the budget deficit would widen by around £30bn from 2020-21 onwards, its report said.
Asked if that forecast was “wrong”, Mr Javid – who has refused to publish any further projections – said his focus was on “our mitigation for no deal”.
And he argued all forecasts did not take into account emergency measures to rescue the economy, saying: “No-one really knows, because they couldn’t know, what the economic policy response would be.”
Mr Javid told BBC Radio 4’s Today programme: “What I’m confident about is, with all those mitigations – whether it is the ports or elsewhere – that we will be able to deal with many of the disruptions around no-deal.”
On whether crashing out of the EU on Halloween is still possible, despite the Benn Act, he said: “Yes, it is. It’s not our preferred outcome, we are working incredibly hard to get a deal by 31 October and I absolutely believe that can still happen.
“But, if we do not manage to do that, we do still need to leave the EU on that date – we cannot have any more dither and delay and we will leave if we have to without a deal on October 31.”
