The Dominion of New Zealand was the historical successor to the Colony of New Zealand. It was a constitutional monarchy with a high level of self-government within the British Empire.

New Zealand became a separate British Crown colony in 1841 and received responsible government with the Constitution Act in 1852. New Zealand chose not to take part in Australian Federation and became the Dominion of New Zealand on 26 September 1907, Dominion Day, by proclamation of King Edward VII. Dominion status was a public mark of the political independence that had evolved over half a century through responsible government.

Just under one million people lived in New Zealand in 1907 and cities such as Auckland and Wellington were growing rapidly. The Dominion of New Zealand allowed the British government to shape its foreign policy and it followed Britain into the First World War. The 1923 and 1926 Imperial Conferences decided that New Zealand should be allowed to negotiate their own political treaties and the first commercial treaty was ratified in 1928 with Japan. When the Second World War broke out in 1939 the New Zealand government made its own decision to enter the war.

In the post-war period, the term ‘Dominion’ has fallen into disuse. Full independence was granted with the Statute of Westminster in 1931 and adopted by the New Zealand Parliament in 1947.

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