March - A delegation of Australians sent to London to negotiate enactment of the Bill.
05 July - British Parliament passes Commonwealth of Australia Constitution Act.
09 July - Queen Victoria gives Royal Assent to the Commonwealth of Australia Constitution Act.
31 July - Western Australia votes to join the federation.
29 October - Queen Victoria issued Letters Patent constituting the Office of Governor-General and also presents the Letters Patent to Australia's first Governor-General, Lord Hopetoun.
17 September - Queen Victoria issued a Royal Proclamation which declared: On and after 1 January 1901, the people of New South Wales, Victoria, South Australia, Queensland, Tasmania and Western Australia shall be united in a Federal Commonwealth under the name of the Commonwealth of Australia.