​In 2013, the American Community Survey (ACS) added an Internet self-response option to its existing data collection modes (paper, computer-assisted telephone interviews, and computer-assisted personal interviews) to improve the timeliness and efficiency of data collection and processing. Previous tests in April and November 2011 evaluated the design of the ACS Internet instrument and found some issues potentially affecting user experience. These included the inability of respondents to return to the survey when the assigned PIN (Personal Identification Number) was forgotten, frequent breakoffs on certain screens resulting in subsequently higher item nonresponse rates for items later in the survey, frequent rendering of error messages on screens with two tasks, and a smaller percentage of Internet respondents compared to mail respondents reporting multiple ancestries. The 2014 ACS Internet Test was designed to evaluate potential solutions to correct these design issues and encourage Internet respondents to return to complete the survey, subsequently reducing breakoffs and response issues. This report provides the results of this test.