A Canstar report has found Australians spent an extra $50,000 in mortgage repayments on an average loan over the last 31 months as a result of the 13 interest rate hikes. A Canstar report has found Australians spent an extra $50,000 in mortgage repayments on an average loan over the last 31 months as a result of the 13 interest rate hikes. National Sydney Morning Herald – Latest News