There is no fixed time period to wait before you refinance an existing home loan ? you will, however, need to understand the cost implications of doing this. Each different home loan product will have a set of fees and conditions around refinancing, or how they vary the amount within the original loan period. These can indicate whether it's worthwhile refinancing your loan.
An Aussie Broker can help you do the detailed sums to determine how and when to refinance, and help you compare prospective loans to switch to. This service is part of your free appointment with an expert Aussie broker.