China's high household savings rate has attracted great academic interest but remains a puzzle. Potential explanations include demographic, policy, and financial causes. Yet a lack of reliable microlevel data on household finances makes it difficult to assess the relative importance of each...

How households shift spending across firms in response to income fluctuations is an important source of risk to individual firms. Using transaction-level data, we study how households interact with the universe of retailers following changes in income. We find that increases in income, both...