Many child sexual abuse (CSA) survivors delay or withhold disclosure of their abuse, even when presenting for formal investigation interviews. This study examined factors that relate to the CSA disclosure process. Participants were CSA victims (N = 1,732) presenting to a Child Advocacy Center (CAC) for a forensic interview. Findings included that youth were less likely to disclose before a forensic interview if they witnessed domestic violence, and that they were more likely to disclose during the forensic interview if they were older, if the alleged perpetrator resided in their home, if they disclosed prior, and if their caregiver believed the allegation. However, caregivers were less likely to believe the abuse allegation if the alleged perpetrator resided in the home. These findings highlight the importance of the family context and caregiver belief in the disclosure process for youth involved in formal CSA investigations.