Technology dominates fast-paced modern life. To remain relevant, survey research must adapt to the ever-changing technological landscape. Currently, the Bureau of Labor Statistics (BLS) ConsumerExpenditure Survey (CE) collects data on small frequently purchased items by asking respondents to hand write all of their household members’ expenses in a 44 page paper diary. In 2009, the CE program launched its multiyear Gemini Project to research and develop a redesign for the CE Survey which included a plan for developing a web diary option. By taking advantage of technological advances, particularly the portability and prevalence of mobile devices, a web diary can offer other benefits that may help to improve data collection. Individuals in a household can access and report their own expenses, reducing the burden on one household respondent and relying less on proxy reporting; respondents can record their expenses as they occuror soon after, reducing recall time; data can be entered directly, eliminating transcription errors; and respondents have the option to choose from multiple modes, catering to different preferences. In 2011, CE began the process of building a web diary accessible via a desktop computer followed by a mobile version in 2013. A series of usability and field tests were conducted, leading to a number of changere commendations and multiple design iterations. With very specific data requirements, creating a user-friendly web diary was not easy, but CE has made good progress and is nearing the completion of its web diary development. This poster presentation shows the progression of the CE web diary from conception to its current state, sharing findings and lessons learned along the way as well as plans for moving forward. The findings will be of interest to survey methodologists working to integrate web or mobile design options into their survey data collection modes.