The Conservative MP for Somerset dismissed Philip Hammond’s comments that Brexit has left the UK’s economy in a “cloud of uncertainty”.
Mr Rees-Mogg said: “This is such an opportunity. When we leave we can set our own tariffs.
“Tariffs set at the European level make food, clothing and footwear more expensive. They are the highest proportion for the poorest in society’s expenditure.
“If we can get rid of those tariffs we help the worse off in society. That is a real benefit.”
Presenter David Dimbleby said: “Why does your Chancellor of the Exchequer not accept this and sound so gloomy?”
Mr Rees-Mogg replied: “Because all the Treasury forecasts assume that instead of cutting tariffs on the rest of the world, we raise tariffs against the EU.
“That is completely insane. The Treasury’s forecasts are even worse than the Bank of England’s.”
Answering the question about whether Bank of England Governor Mark Carney and the BBC area negatively affecting the UK’s negotiating hand, The Sunday Express political editor Camilla Tominey said the Governor repeatedly got his predictions wrong on Brexit.
Ms Tominey added: “There have been five consecutive periods of growth. Growth is up 1.9 per cent which is not what the Project Fear brigade were predicting.
“On Brexit in general, BBC bias, I think there are only two Brexiters on this panel and three Remainers. I don’t know whether you’ve had a panel that is majority Brexit, David.
“But I suggest that when we speak to our readers, both sides of the demographic divide mostly people just say: ‘Will you get on with it? Just get on with Brexit. Stop posturing, stop fighting between yourselves.’
“And, you know, the notion of it being a minority as well. Overwhelmingly people in Parliament people voted for the referendum in the first place. Overwhelmingly in Parliament people voted to trigger Article 50 – overwhelmingly.
“80 per cent or more of the electorate voted for parties that supported Brexit, so just do it.’
But Baroness Shami Chakrabarti said: “But that’s the Government that has to ‘just do it’, not Mark Carney and not the BBC.”
Ms Tominey said: “It’s not just the Government though is it Shami? It’s the EU who despite this conciliatory offer from the Florence Speech are digging in their heels.
“Even though a deal for them is mutually beneficial. This is what is lost in a lot of the rhetoric.
“Do the German car industry seriously want to shoot themselves in their own feet by not having a free trade agreement with the UK? That would cost the German car industry alone 29,000 jobs.
“The trouble is the Remain argument, I’m afraid, it fails because everybody knows deep down that if we do get this cake and eat it scenario, we can have free trade with Europe and we can have free trade with the rest of the world that is infinitely better.”