Here's The Australian's report today on Ian Hanger QC's Royal Commission of Enquiry into the Rudd Insulation Debacle.

KEVIN Rudd and Julia Gillard have been told to prepare to give evidence in the royal commission into the former Labor government's bungled home insulation scheme.

Summonses have reportedly been sent to Mr Rudd, his deputy at the time Ms Gillard, his finance minister Lindsay Tanner, his environment minister Peter Garrett, climate change minister Greg Combet, and the assistant minister charged with co-ordinating government stimulus spending programs, Mark Arbib.

Former treasurer Wayne Swan was contacted by phone.

All seven have been advised they may be called to appear before the inquiry, which is investigating whether the then-government was warned about the scheme, created to inject money into the economy during the global financial crisis.

The commission has been given wide-ranging terms of reference to establish "what really went wrong".

It will "fill the gaps" of other administrative reviews and coronial inquests, Commissioner Ian Hangar QC says.