Theresa May argued that her contract with Brexit could "leave" the United Kingdom as she defended her agreement against the official economic forecasts that predict growth.
An EU end, according to government plans, could reduce the gross domestic product (GDP) of the United Kingdom by 2.5 to 3.9% Treasury and other Whitehall departments revealed.
The eight-page document published on Wednesday failed to provide a concrete analysis of the Brexit agreement that the Prime Minister is trying to push into parliament.
However, it analyzed the likely impacts of the proposals approved by the Cabinet in July and set out in the subsequent White Paper of the Government.
It also modeled the UK's influence, which secured a Norwegian style relationship with the EU after Brexit, a Canadian-style free trade agreement and Brexit's "no deal".
In each scenario, it was assumed that the UK economy would grow in the next fifteen years, but not as fast as it would without leaving the EU.
No Brexit business saw growth of up to 10.7% less, the analysis said.
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Mrs. Maya used the analysis to continue urging her case with Brexit because she is battling the conviction of MPs to support their approval in the Chamber of Deputies on December 11th.
In the interviews during the Prime Minister's questions she replied: "The analysis does not show that we will be poorer than the current status quo.
"The analysis shows that it is a strong economy that will continue to grow and that the model that in fact best carries the vote of the British people – and for our work and our economy – is the model the government has put forward."
In an interview for Sky News, Chancellor Philip Hammond said earlier that the analysis showed that Brexita's Prime Minister's treaty offers political advantages that it is out of the EU with "very low economic costs".
The Whitehall document was followed in the middle of the publications even more dramatic predictions Bank of England.
She claimed that Brexit did not reach agreement that the UK economy could cut by almost 8%, the price of pounds fell, a 30% fall in property prices, unemployment almost doubled, and inflation rose to 6.5%.
Mark Carney, Governor of the Bank of England, stressed that the work was not a prognosis, but instead was the "worst case" of any Brexit trade to help him "get ready for all the possibilities".
He also announced that the British banking system is strong enough to withstand the inappropriate Brexit.
But the explanation of Mr Carney's banking work did not satisfy Brexiteers.
Chief Eurosceptic Tory Jacob Rees-Mogg described the bank governor as "the second Canadian politician who did not get into Canadian politics and gained jobs in the UK".
Sky News said: "I do not think he's very respected and deeply betrayed by the Bank of England's reputation."
Those who want a second referendum in Brexit use a double economic analysis to claim their new public vote on EU membership.
With the Prime Minister, it is estimated that there are more than 60 votes for the majority he needs to have the Chamber of Deputies approve his contract with Brexit. Shadow Chancellor John McDonnell has suggested that a new referendum may be "inevitable".
To admit that it would be "very difficult" to force general elections, even if the MPs vote on the Brexit agreement, McDonnell told the BBC, "If it is not possible, we will appeal to the government to join us publicly.
"And again it's hard to judge every stage, but that's the order I think we will inevitably go for this time."
When she talked about a trip to Scotland later, while she continued her journey to the UK in an attempt to sell her agreement, the Prime Minister said McDonnell's commentary was "the true position of the Labor Party."
"The works just want Brexita to disappoint, want to go against and overturn the voice of British citizens," she said.
Before Brexit voted on December 11, Mrs. Maya could face another headache.
House Deputy John Bercow said he would consider whether the government is acting in "contempt" for Parliament if it continues to refuse to publish full legal advice on the withdrawal agreement.
Yesterday on Wednesday, the government revealed that it would accept up to six amendments to the draft, on which MPs would "have a meaningful vote" on the Brexit agreement, which could trigger the latest attempt at a second referendum or "soft" Brexit.