The ATO has published the General interest charge (GIC) and the Shortfall interest charge (SIC) rates for the 2nd quarter of 2012-13.
The GIC annual rate for October - December 2012 is 10.62% while the GIC daily rate is 0.02901639%
The SIC annual rate for October - December 2012 is 6.62% while the SIC daily rate is 0.01808743%
For GIC rates, go here
For SIC rates, go here