This paper examines the characteristics and circumstances of families vulnerable to sharp income drops and those most likely to recover financially. More than 13 percent of nonelderly adults in families with children will see their incomes fall by half at some point over the course of a year, and about 40 percent fully recover within a year. Those who lose jobs or have an adult leave the family are more likely to have a substantial drop in income and are less likely to recover.This study uses data from the Survey of Income and Program Participation, which collects data every four months and can provide information on short-term income loss.