The only way to know your HIV status is to get tested so you can get linked to HIV treatment and prevention; yet 1 in 7 (13%) of the estimated more than 1 million people with HIV in America still don’t know they have HIV. HIV self-tests can help us to reach at-risk individuals who would not otherwise test for HIV, or if they are used to supplement testing, they can reduce overall incidence. CDC’s recent direct-to-consumer free HIV self-test distribution program demonstrated HIV self-testing has the potential to increase testing, but there are concerns that HIV self-tests may increase incidence if they replace clinic-based testing or if they are used in response to a specific risk event before the test window of the home-test has passed. This project seeks to assess the long-term (10-year) impact on HIV incidence and racial/ethnic disparities in HIV incidence if HIV self-tests were distributed to populations reached through CDC’s HIV self-test distribution program.