Abstract
Since the beginning of the 1990s, there have been significant changes in fertility quantum and tempo in Czechia and Slovakia. We are also witnessing significant age pluralization of reproduction. These and other transformational changes can be observed not only in a cross-sectional view but also in a cohort perspective. The main goal of the article is to analyse the main changes in the fertility process in Czechia and Slovakia after 1989. We focus on changes in the intensity and timing of childbirth and the age distribution of fertility. We identify the development trajectories of the two countries and the similarities and differences between them brought about by the transformation period. By analysing the process of the postponement and recuperation of cohort fertility, we also try to point out the future development of completed cohort fertility and the parity structure of women born in the second half of the 1970s and 1980s.