Federal parliament sits for budget week

WHAT'S HAPPENING IN FEDERAL PARLIAMENT THIS COMING WEEK:

* Treasurer Josh Frydenberg to deliver his first federal budget on Tuesday night.

* House of Representatives to sit Tuesday to Thursday.

* Senate to sit Tuesday and Wednesday, but go into budget estimates hearings Thursday and Friday.

* Opposition Leader Bill Shorten to deliver his budget reply speech on Thursday night.

* Labor and coalition party rooms to meet on Tuesday morning.

* Expected to be final parliamentary week before a May 11 election.

* Three senators - Wendy Askew (replacing Tasmanian Liberal David Bushby), Raff Ciccone (replacing Victorian Labor's Jacinta Collins) and Duncan Spender (replacing NSW Liberal Democrat David Leyonhjelm) - to be sworn in. First speeches scheduled for Thursday.

* Labor to seek endorsement for a parliamentarians code of conduct on race and cultural issues.

* Senate will endorse a bipartisan motion censuring senator Fraser Anning for his "inflammatory and divisive comments" extending blame to Muslim migrants over the Christchurch massacre, and calling on all Australians to "stand against hate".

* Both houses expected to hear Christchurch massacre condolence speeches.

* Labor to seek disallowance of regulations banning long-term casuals claiming an annual leave entitlement.

* Inquiry reports due on: political interference in the ABC; cashless welfare card; resource tax changes; abuse royal commission redress scheme; quality of checks on aged care homes; national integrity commission laws.

* Valedictory speeches expected during the week

* Legislation for budget appropriations, north Queensland floods relief, instant asset write-off for business, veterans, foreign influence transparency scheme and resource taxation.