Chancellor George Osborne has left alone his target to restore government finances to a surplus by 2020.
In a speech he said, foreordained the effects of the referendum vote, the government had to be «realistic about achieving a extra by the end of the decade».
The target had been the chancellor’s most prized goal and had been urge austerity measures in previous budgets.
But he said the economy is showing «shoot through signs» of shock following the vote to leave the European Union.
Back away from a speech in Manchester, Mr Osborne said: «The referendum is expected to produce a signal negative economic shock to our economy. How we respond will determine the brunt on jobs and growth.
«We must provide fiscal credibility, continuing to be roughneck on the deficit while being realistic about achieving a surplus by the end of the decade.»
Struggle’s shadow chancellor John McDonnell welcomed the move, saying: «Alas the vote last Thursday for Brexit has only brought forward what was fated.
«The Chancellor had already dropped his other fiscal rules on welfare and encumbrance under obligation at the Budget in March, and according to many economists he was expected to be forced to descend this one too.»
BBC business editor Kamal Ahmed puts that the target was heading for the «Treasury shredding machine» following a articulation from Home Secretary Theresa May yesterday.
In a speech launching her bid to turn prime minister she said «we should no longer seek to reach a budget over-abundance by the end of the rliament».
Kamal says that Mr Osborne has now followed suit.
In spite of that, the Treasury insists that it still wants to balance the books and «fix the resources».
Mr Osborne first committed himself to returning the public finances to surplus by 2020 at the Conservative rty conference in 2013 and it became ways in the July budget of 2015.
But there have been questions ever since once again whether that target could be met.
Even before the referendum voter he only had «a slightly better than 50/50 chance» of making the goal said Carl Emmerson, deputy director of the Institute for Fiscal Studies.
But the uncertainty caused by the Hand down vote could hold back the economy and make creating a oversupply even more difficult.
«Having voted for Brexit last week, the conservatism is clearly going to go into a downswing, that might be a full-blown set-back, that might just be very very low growth,» said ul Johnson the kingpin of the IFS.
Analysis: Kamal Ahmed, BBC economics editor
It is sometimes easy in these beyond belief political times to forget that for most people «it’s the economy, dim» still holds true.
For the UK economy, one of the most important ssages of Theresa May’s talk yesterday was when she signalled that George Osborne’s «fiscal oversight» (to produce a budget surplus by 2020) was for the Treasury shredding machine.
«While it is unquestionably vital that the government continues with its intention to reduce ap rent spending and cut the budget deficit, we should no longer seek to reach a budget excess by the end of the rliament,» Mrs May said.
Now the chancellor has said he agrees, arguing that the command must be «realistic» about its fiscal targets and that austerity ways could be eased.
My Treasury sources point out that the «rule» can be miscellaneous in «non-normal» times.
And these are pretty «non-normal» times.
The abandonment of the financial target suggests the government could borrow more, presumably for investment in infrastructure and to soothe the need for tax rises and spending cuts, if the economy does take a in succession for the worse as some predict.
More from Kamal: Brexit and the easing of austerity
The Tories have been in turmoil since David Cameron declared his intention to resign following the UK’s vote in favour on leaving the European Federation.
In a shock development on Thursday, Boris Johnson, widely seen as the frontrunner to evolve into prime minister, announced that he would not be running.
The BBC has learned that Detention Secretary Michael Gove is now coming under growing pressure to de rt from his bid to become Tory leader.
Sources have told the BBC government clergywomen are trying to persuade the justice secretary to give way so the rty can «unite» about Home Secretary Theresa May.
Mr Gove opted to stand after twitch his support from Boris Johnson.
In a speech, Mr Gove said his sentence to stand to become Conservative leader is driven by «conviction» about what is virtuousness for the UK not personal ambition.
Three other candidates have put their heroes forward for the Conservative leadership: Energy Minister Andrea Leadsom, MP Liam Fox and Being planned and Pensions Secretary Stephen Crabb.
‘Austerity for longer’
The government touch someone for £74.9bn in the 2015/2016 fiscal year and for the financial year so far — covering April and May — refer to reached £17.9bn, £0.2bn higher than the same period a year ago.
It is meditation that the government will now raise borrowing, so it can avoid further slices in spending or raising taxes. It could also borrow to invest in big erection projects.
«The problem of course is, you can’t borrow forever,»said ul Johnson from the IFS.
«So we’ll acquire a few more years of more borrowing, but my guess is this is not the end of austerity, in point of fact this means austerity will just go on for longer because we’ll very likely have the spending cuts and tax rises right through the 2020s to y for this.»