Coalition deal won't be made public

Labor says the the Turnbull government is hiding the coalition agreement between the Liberals and Nationals.

Attorney-General George Brandis told a Senate estimates hearing on Monday while a copy of the document was held by the fiscal branch of the Department of Prime Minister and Cabinet it remained a "private document".

"It is not a public document - it is an exchange between two individuals in their capacity as leaders of two political parties, not as public office holders," Senator Brandis said.