Discount Rates

Summary results should be presented for the following real discount rates:

• 4 per cent; 

• 7 per cent; and 

• 10 per cent.  

This is in accordance with the majority of national, state and territory guidelines on CBA.  In cases where a different real discount rate is used in an appraisal, the Summary of Appraisal Key Results and Assumptions should specify the basis for doing so and stakeholders should contact Infrastructure Australia for specific advice in each case.