All babies in Australia must be registered immediately after days of birth. Under the Births, Deaths and Marriages Registration Act 1995, parents must provide the Registry with the full details of the child's birth for it to be registered and for a Birth Certificate to be produced.There is no fee for registering a birth. birth must be registered before you can get a birth certificate. A birth certificate provides legal evidence of your name, age, place of birth and parents' details. A birth certificate is a primary identity document.