Saving money by comparing Interest rates

Find in Google a website that Compares interest rates online, that way you can compare between the different financial institutions.

If you email or Fax the lowest interest rate to the company that you currently with they will more likely to reduce your interest rate, Otherwise consider switching

In Australia you can use http://www.cannex.com.au/, http://www.ratecity.com.au/ or http://www.infochoice.com.au for example.