What is the interest rate?

The rate used in calculating your interest is set by law and is reviewed every quarter.

Interest rates for 2012–13 are shown in the table below.

Details of other quarterly interest rates are available from the ATO.

TABLE: Interest rates used for calculation of early payments, overpayments and delayed refunds (2012–13)

Period	Interest rate (% pa)
1 July 2012 to 30 September 2012	3.66
1 October 2012 to 31 December 2012	3.62
1 January 2013 to 31 March 2013	3.24
1 April 2013 to 30 June 2013	2.95