How many US households are unbanked or underbanked? The Federal Reserve estimates that about 6.7% of American households are Unbanked, that is, those without checking or savings accounts. Other estimates suggest 7.7%.  The data also suggests that 18% of households in the U.S fall under the "underbanked" category. Those who consume alternative banking services regularly. This book explores the various root causes of this phenomenon, the population groups mostly affected and some thoughts on how to try and provide actionable solutions to the problem.