Saving rates display great variation across countries and over time. They are also closely related to growth performance. This volume provides a state-of-the-art account of key variables, institutions and policies that determine saving. Drawing from a systematic exploration of the existing literature, the collection summarizes current knowledge about cross-country saving trends, the relation between saving and growth, the impact of financial policies and institutions on saving, the effect of foreign resource inflows on saving, and the links between income distribution and aggregate saving.