Let’s recall Friday when first the Treasury confessed to its own Budget lies:
The medium-term economic and fiscal projections are sensitive to the assumptions that underpin Treasury’s estimate of potential GDP — that is, assumptions about population, productivity and participation. They are also sensitive to the assumed pace of the economy’s return to potential — that is, the assumption that the adjustment period lasts five years.
Analysis reported in the 2016-17 Budget shows that a faster (two year) adjustment to potential requires comparatively faster growth in real GDP and employment as the output gap closes and spare labour is put to use. This leads to lower unemployment and faster growth in wages and domestic prices, increasing nominal GDP and improving the projected underlying cash balance over the medium term even as long-run real GDP is unchanged from the Budget projections. A more gradual adjustment period (eight years) is estimated to have broadly opposite effects on the projections.
