THE arrival of the Royal Commission on Child Sex Abuse in Launceston is an important step, a support advocate says.
Launceston will host private sessions for the commission from August 26 to 29.
Sexual Assault Support Service chief executive Liz Little said the commission's presence would help abuse victims build trust with authorities, which can often be lacking after their ordeals.
Ms Little said some Tasmanians had been sexually abused by people in the "churches, schools, a range places," and it was important "for them to share their stories".
Royal commission chief executive Philip Reed said 18 people affected by child sexual abuse while in the care of an Australian institution would tell of their experiences in a private session.
"The information provided in private sessions is helping the royal commission better understand how child sexual abuse in institutions can be prevented," he said.
"While these private sessions have already been allocated, anyone who would like to have a private session can still register their interest by phoning 1800 099 340."