UK OBR too cautious on borrowing decline
The transfer of responsibilities to the Office for Budget Responsibility (OBR) is unlikely to result in an improvement in fiscal forecasting, which is notoriously difficult.
The OBR this week projected a fall in public sector net borrowing excluding the temporary effects of financial interventions (PSNB ex) from £156.1 billion in 2009-10 to £155 billion in 2010-11. Recent trends suggest a significantly smaller deficit. May public finances numbers released today revised down the 2009-10 outturn to £154.7 billion. More importantly, monthly borrowing including intervention effects, after attempting to adjust for seasonal factors, has been running at about £10 billion recently, or £120 billion annualised – see chart. Assuming no further change, this is consistent with the PSNB ex measure falling to £126 billion in 2010-11, based on the Treasury's March forecast that intervention effects would reduce headline borrowing by £6 billion this year. (PSNB ex figures are currently available only quarterly but will be published on a monthly basis from July.)
The OBR's caution in extrapolating recent better trends is helpful for the Chancellor as he seeks to justify further significant tightening in next week's Budget.
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