From the Budget summary:

• A new border clearance levy to fund passenger-related biosecurity and customs activities at the border is expected to take effect from 1 January 2016. Subject to consultation, it will be around $16 for arriving passengers and around $6 for departing passengers. It is expected to raise around $100 million per year once fully implemented.
• At the same time, the Budget expands some border activities, including an additional $25 million for more x-ray machines and detector dogs and $33 million for more immigration staff, including border officers.