When George Osborne took over at the British Treasury the deficit was 10.2% of GDP. Osborne's hope in 2010 was that the budget could be balanced by 2015, now it looks like this will happen in 2019 or later.The forecast for the end of the 2015 fiscal year is a deficit of 5% of GDP. Lower than expected tax receipts are a big reason for the difficulty in lowering the deficit. The Office for Budget Responsibility, the budget agency, has reduced the forecast for tax receipts for 2015-2019 by 87 billion pounds. This means further spending cuts will be needed, according to OBR. Budget surplus is not expected before 2019. This is happening even though lower inflation and lower market interest rates have helped reduce outlays to service the debt. OBR assumes productivity will increase to 2% for the budget to be balanced in 2019. At the average productivity growth rate of 0.5% seen since 2008, the budget deficit will still be 2.2% in 2019, in another scenario of numbers run by OBR.