David Cameron has accused Labour of making an "utter mess" of the economy.
Responding to the Budget, the Conservative leader said that any government claim of economic competence was now "dead, over, finished".
"Today everyone can see what an utter mess this Labour government and this Labour prime minister have made of the British economy," he told MPs.
"The fastest rise in unemployment in our history, the worst recession since World War Two, and the worst peacetime public finances ever known.
"As of today, any claim they have ever made to economic incompetence is dead, over, finished."
Cameron accused the prime minister of presiding over "Labour's decade of debt".
And he said that borrowing of £606bn over the next four years would mean that "our children are going to be in poverty for decades".
"It is a staggering amount and the price will be paid not by the incompetent ministers who put us into this mess but by families and businesses up and down this country," he said.
"I have to say they will never forgive the people that have done this. Britain simply cannot afford another five years of Labour."
On suggestions of a new fiscal stimulus, Cameron said: "Are we missing something? There isn't a fiscal stimulus here. There is a couple of extra billion added to what had been already announced. This is less than the cut in next year's capital budget.
"This isn't a stimulus, it is a delayed tax rise, and a delayed spending cut. He couldn't do a proper stimulus because he had run out of money."
The Tory leader also said the borrowing was typical of a Labour government.
"The fundamental truth is that all Labour governments run out of money," he told the Commons.
"The last Labour government gave us the winter of discontent, this Labour government has given us the decade of debt.
"The last Labour government left the dead unburied, this one leaves the debts unpaid.
"They sit there running out of money, running out of moral authority, running out of time and you ask yourself what is the point of another 14 months of this government of the living dead?
"If they don't have the courage to deal with the debt and take the difficult decisions why not make way for the team that can?"
