The paper reviews the economic risks associated with regimes of high public debt through DSGE model simulations. The large public debt build-up following the 2009 global financial and economic crisis acted as a shock absorber for output, while in the recent and more severe COVID19-crisis, an...

This paper was prepared in support of Japan’s G20 Presidency. It takes stock of ongoing and projected population ageing across G20 economies and its far-reaching implications for economic growth, productivity, inequality within and between generations and the sustainability of public finances....