Hold Accountable and Lend Transparency on Campus Sexual Violence Act of 2021 or the HALT Campus Sexual Violence Act of 2021 This bill addresses dating violence, domestic violence, sexual assault, or stalking incidents on college campuses, including by expanding requirements governing the disclosure of such incidents and efforts to prevent them. Specifically, the bill requires the Department of Education (ED) to make available an online survey tool regarding student experiences with domestic violence, dating violence, sexual assault, harassment, and stalking. ED must publish a biennial report that includes campus-level data for each institution of higher education (IHE). The bill permits ED to impose civil penalties on IHEs that have violated a law under the jurisdiction of its Office for Civil Rights. In addition, the bill directs ED, the Department of Health and Human Services, and the Department of Justice to create a task force on sex-based harassment and violence in education.