While growth is expected to rise, Chancellor George Osborne (pictured) is likely to need to borrow more than previously expected, not least in 2014.
The government is estimated to borrow £86.6bn this year but analysts predict the final figure could be as much as £100bn due to weak wage growth and the falling oil price.
The Office for Budget Responsibility (OBR) is expected to raise its borrowing forecast for the year by between £5bn-£10bn as a result.
In a particularly bleak outlook, UBS said the total upwards revision to borrowing figures for 2014 and future years could be as much as £75bn.
In better news for the Chancellor, the UK economy is expected to have grown by 3% in 2014, its fastest pace since 2006.
The OBR is due to revise its UK growth forecast for 2014 up from a March figure of 2.7%. Growth for 2015 will also be revised up from 2.3% to 2.6%, while 2016 growth estimates will remain unchanged.
Osborne’s last Autumn Statement before next year’s general election will take place this Wednesday (3 December).
