The Coalition and Labor are inching towards a deal to pass the $6 billion so-called omnibus savings package, Treasurer Scott Morrison says.

Federal parliament resumes this week and debate will begin on the savings package, which contains 26 savings measures the government argues Labor indicated it would adopt during the election campaign.

Labor has partly disputed that claim, arguing its election policies did not explicitly commit to a $1 billion cut to the renewable energy agency ARENA, nor to a $1.3 billion cut to the clean energy supplement, originally linked to the axed carbon tax, which would actually deliver a cut in real terms to the incomes of Newstart recipients.

A rearguard action has been underway within Labor, publicly led by shadow cabinet minister Anthony Albanese and backed by welfare groups such as ACOSS, to oppose the cut to the supplement and, behind the scenes, the government and opposition have been negotiating over a way to find alternative savings.