When did the Australia empire stop?

The Australian Empire, as part of the British Empire, began to decline after World War I, with significant changes occurring post-World War II. The process of decolonization accelerated, leading to Australia gaining greater independence through the Statute of Westminster in 1931 and the passage of the Australia Act in 1986. While Australia remains a constitutional monarchy within the Commonwealth, it is now fully sovereign and no longer operates as an empire.