Abstract. Savings and wealth accumulation are important dimensions of policy and research debates. This special issue comprises a collection of survey articles on topical issues ranging from the effects of access to credit, the rise of Islamic finance and sovereign wealth funds, the measurement of wealth inequality and genuine savings, the distribution of wealth across generations and retirement savings. We tend to not think about savings and wealth accumulation when times are good and incomes are rising. But when income growth stops and rainy days arrive, savings and wealth jump back to the forefront of our minds, as individuals, policy makers and researchers.Developments over the past twenty-five years are a case in point. During the boom years of the 1990s and early 2000s, incomes grew rapidly reflecting sustained high growth rates of economic activity and an unprecedented rise in commodity prices. Furthermore, historically low interest rates in many advanced economies reduced the return on saving and lowered the cost of borrowing, contributing to higher household consumption and indebtedness and low savings rates.3 Savings rates, measured as the difference between income and consumption, have not only been low and indebtedness rising at the household level, but also at the country level, demonstrated by large and sustained current account deficits and rising debt in many advanced economies.When the boom ended with the onset of the global financial crisis in 2007, it became clear that much of the wealth created over the previous two decades was all but on paper and individuals and countries had very few assets to fall back on. Chair Yellen's quote at the beginning of this article is applicable not only to American families but to families and governments around the world. The lack of assets has played an important part in the painfully slow economic recovery post crisis. Consumers have been hesitant