What are the most expensive mortgage interest rates in Australia?

In the latest installment of the Apple Mortgage Cake, we take a look at the most affordable interest rates for the second mortgage.Read more about the mortgage interest rate benchmark here.For a second mortgage with a variable interest rate, the benchmark interest rate will be 6.5 per cent.For example, if the mortgage rate was 5.5%, the benchmark rate would be 4.5%.A variable rate is one which var...