City of Sydney Relationships Declaration
Other institutions such as the Registry of Births Deaths and Marriages no longer accepts an Australian Marriage Certificate as a form of ID – this creates an equal situation for both opposite sex and same sex couples as both are not allowed to present their relationship certificates as a form of ID.
Birth certificate
The full birth certificate in Australia is an officially recognized identity document generally in the highest category. The birth certificate assists in establishing citizenship. Shorter and/or commemorative birth certificates are available; however, they are not generally acceptable for identification purposes.