What's in the budget for immigration

Four Australian immigration detention centres are being closed, saving close to $40 million over four years.

An extra $61.5 million will go to Nauru and Manus Island detention centres. (AAP)

What's in the budget for immigration?

• Four Australian immigration detention centres - Perth residential housing, Maribyrnong (VIC) detention centre, Blaxland compound at Villawood (NSW) detention centre - to close saving close to $40 million over four years
• Lease for Wickham Point (NT) centre won't be renewed beyond November 2016
• Brings to 17 number of detention centres closed since 2013
• $55.4 million to Indonesia for assistance for asylum seekers
• Extra $61.5 million for Nauru and Manus Island detention centres
• $12.1 million support for unaccompanied refugee minors over two years.