The KOSSDA data collection is accessible for search to all users upon login to the website. However, in order access any KOSSDA service including data downloads, registration as a membership user or a non-membership user is required. A membership user has access to all KOSSDA service unavailable to a non-membership user.

KOSSDA membership is available to both individuals and institutions with fixed membership fees. Both individual members and the persons affiliated with member institutions have direct access to all of KOSSDA data and services.