The National Firearms Interface will include information about a firearm's ownership history.
A meeting of the Law,Crime and Community Safety Council on Friday will be told that the database will be completed by the end of the year,two years ahead of schedule.
The National Firearms Interface will include information about a firearm's ownership history,whether it is suspected of being used in a crime,and whether it has been reported stolen.
The safety council,a sub-committee of the Council of Australian Governments,contains state Attorneys-General,police and emergency services ministers.
Each state and territory police force is auditing firearms data to include in the interface.
High-level intervention by CrimTrac,the agency responsible for information sharing between state and federal law enforcement and security authorities,sped up the creation of the database.
The Commonwealth-New South Wales Joint Review into the Martin Place siege recommended that the National Firearms Interface be completed by the end of 2015.
Monis and two hostages died in the 16-hour siege last December.