Making allowance for the ageing structure of the population, this paper cal
culates the levels of optimal national saving and future living standards f
or Australia for the period 1999-2050. For this period, the optimal saving
response to the ageing of the Australian population is for national saving
to increase from its current level by 2.7 per cent of GDP by the year 2017
and then to decline to the year 2050. The implied growth of living standard
s is 1.20 per cent per year. Reduced immigration would reduce the rate of g
rowth of living standards but reduced fertility would not.