Treasury is pressing the Australian government to acknowledge that there may be no further financial support for niche lenders in the form of investment in mortgage-backed securities.A short briefing for the Treasurer, prepared in December 2011, advise that the government "formulate policy objectives to help finalise the transition towards a RMBS market that is independent of government support." Treasury released a partial version of the briefing on Friday following a Freedom of Information requestThrough the Australian Office of Financial Management the government has invested A$15.3 billion in RMBS out of a planned program of $20 billion. Funding for the program became available in late 2008 as a policy response to the credit shock and weakening business models of many smaller lenders.Over the first five and a half months of 2012 the AOFM has invested $697 million in four RMBS transactions. The AOFM invested $2.1 billion in 15 transactions.Writing six months ago Treasury guessed that the remaining capacity may be exhausted by late this year or early next year, though the low level of activity in the RMBS market this year may mean that funding will be available for longer than expected.