"We didn't just stay up all night and write a letter to the Treasury Committee", Carney said.
Even if Britain left under Theresa May's proposed deal, the economy would be at least 1% smaller by 2024 than if voters had backed remain in the referendum, the report concluded.
The warning came as he defended the Bank's apocalyptic Brexit forecasts last week, saying some of the criticisms were "unfair". The main takeaway should be that the BOE found that United Kingdom banks could withstand any outcome, he said, adding there is a low probability of the worst-case Brexit scenario materializing.Responding to criticism of the publication, Carney said that's an "unfair" attack.
The Bank of England and its governor have attempted to assess the impact of Brexit on several occasions.
Mark Carney told MPs on Tuesday that in "the most extreme scenario", Brits could expect the cost of their shopping baskets to soar after the United Kingdom leaves the EU.
The Bank's Brexit report last week said a cliff-edge Brexit could see growth fall by up to 8%, the pound crash, inflation soar, interest rates jump, unemployment skyrocket and send house prices down by almost a third. He branded Carney "a second-tier Canadian politician" who had politicised the Bank of England.
He added: "There was no exam crisis. We didn't stay up all night - you asked for something that we had and we brought it and gave it to you".
Asked by lawmakers about the BoE's worst-case scenarios, he said they were "low-probability events" but ones the central bank needed to consider to make sure Britain's banking system could withstand any Brexit shocks.
The forecast was blasted as "scaremongering" by some Brexiteers, with Jacob Rees-Mogg calling the predictions "hysterical".
However, despite banks, economists and business leaders issuing countless warnings, Carney said the central bank's stress tests found Britain's financial sector to be resilient and capable of handling Brexit-induced economic shocks.