Married and defacto couples can finalize their financial arrangements by way of a financial agreement. You can make a financial agreement before you commence a defacto relationship or marriage, or during a defacto relationship or marriage and after a separation.
Pre nuptial agreements are advisable particularly where you seek to protect and quarantine assets that you bring to a relationship.
Financial agreements are private agreements and are not filed at court. Each party does, however, need independent legal advice.