$2 billion to be made available to small business !!!, page-23

Chippy the RBA is our central bank.

Essentially if the govt bought their own debt they would be printing money, this probably would cause some difficulties for the AUD in international markets. I would think that it would be devalued and the asking interest rate for our "other" already issued bonds would rise which would might defeat the purpose a bit.

But its hard to truly know what would happen.