How much will population aging slow income growth in advanced economies?
Core argument: A 1% increase in a country's working-age population share is estimated to raise income per capita by about 1% and to amplify growth by a further 0.1–0.4% in subsequent periods, with patterns stable across OECD and non-OECD countries.
The results document that shifts in population age structure significantly affect economic growth. A 1% increase in the working-age share raises income per capita by about 1%. A 1% greater working-age share amplifies growth by 0.1–0.4% in subsequent periods. These patterns are stable for both OECD and non-OECD countries. We combine the empirical estimates with demographic predictions and project economic growth in 2020–2050. Without population aging, income per capita in OECD countries is projected to grow on average by 2.5% annually between 2020 and 2050. With population aging, growth is projected to slow by 0.8 pp if we measure working ages retrospectively but only by 0.4 pp if we measure [changes in age patterns of health]. In contrast, population aging is projected to spur average growth of income per capita in non-OECD countries.

