When you are creating tickets for your events, you have the option to pass along any fees to your attendees. This allows you to maximize the potential revenue for your event and organization.
Under the "Setup" menu under the main "Tickets" menu, you can create or edit an existing ticket. Under the "Ticket Price" section, the last item #3 is the "Include Fees In Price" and simply click on the radio button to "YES" to make this feature active.
You can include this on all or any of your different ticket types created.