Various embodiments generally relate to user interface elements informative of referral incentives. In some embodiments, contact information may be obtained for contacts associated with a user of a content management system. Various amounts of additional storage space available to the user upon acceptance of referral requests sent by or on behalf of the user to the contacts may be determined. One or more graphic indicator of various types may be displayed to the user indicating one or more of: amounts of additional storage space obtainable through successful new referrals, the user's current storage space, and the relative sizes of the user's current storage space and the amounts of additional storage space.