Article dans une revue: We use the National Transfer Accounts methodology to calculate the lifecycle deficit in France for the years 1979-2005. During this period, consumption profiles were roughly constant over age, while labor income profiles shifted to higher ages. The share of the aggregate lifecycle deficit in GDP rose sharply in the 1980s due to an increase in the mean age of the population. In contrast, the per capita shares of the lifecycle deficit attributed to the population under 20 and over 60 varied little during this period, even though the relative weights of these two age-segments has shifted continuously in favor of the latter.