The ATO has published the General interest charge (GIC) and the Shortfall interest charge (SIC) rates for the third quarter of 2014-15.
The GIC annual rate for January - March 2015 is 9.75% while the GIC daily rate is 0.02671233%
The SIC annual rate for January - March 2015 is 5.75% while the SIC daily rate is 0.01575342%
For GIC rates, go here
For SIC rates, go here