"Significant" and "deep" spending cuts will be needed to meet George Osborne's Budget aims, an independent economics think tank has warned.
Paul Johnson, the director of the Institute for Fiscal Studies, told BBC Radio 4's Today programme: "In order to meet the Chancellor's aims, you do need some significant and some really quite deep spending cuts in 2016/17 and 2017/18, and then he takes his foot right off the accelerator in 2019/20.
"So you get big spending cuts in the first couple of years and then spending increases right at the end."
Mr Johnson also accused the Chancellor of not giving enough detail about how welfare cuts and a clampdown on tax avoidance would deliver savings.
"I think it's rather disappointing that so far in, we still haven't heard any details about this", he said.
Here is what the papers have to day the morning after Chancellor George's Osborne's pre-election Budget announcement.
In video blogs for ITV News, young businessmen said they think the budget is helpful for them, and other young people.
Charities have been lining up to criticise the Budget, whilst the government continue with their rhetoric on 'takers' and 'givers'.