Existing research profiling consumer financial sophistication has examined specific decision errors that consumers may make in financial matters. While these errors have been replicated in multiple studies over the years, most have emerged from highly controlled experimental settings or through consumer surveys that measure only specific categories of financial behavior. This paper extends existing research on financial sophistication by utilizing an ethnographic study conducted over a 5-year time period. Results indicate that while some of the traditional categories of decision errors defined in earlier research affect consumers, decision errors not thoroughly examined in previous academic studies can have a notable and growing effect on consumers' financial decisions. Emerging categories of financial decision errors are identified, and shifts in consumers' financial behavior resulting from the financial crisis are profiled. Copyright © 2014 John Wiley & Sons, Ltd.