The falling fertility rate in Australia, as in other developed countries, has been the focus of much policy and research interest for some years, particularly in relation to the contribution this makes to an ageing population and the implications of these population changes for intergenerational sustainability. It is well-established that the fertility rate for women with a tertiary education is lower than for women without a tertiary education, however there has been little research examining whether the gap in fertility between women with higher education and in professional occupations and other women has narrowed or widened across time. In this paper, focusing on childlessness only, we use data from the Australian Bureau of Statistics C...