The Secular Party recognises that monarchies embody the concept of hereditary privilege, and that this is incompatible with the principle of equal human rights. The British monarch is also head of the Church of England. Having the monarch as the Australian Head of State is thus a violation of the basic secular principle of separation of church and state. It is therefore the policy of the Secular Party that Australia become a republic, with an Australian head of state.

The Secular Party recognises that there are many other motivations for a republic, including that the people of Australia be ultimately sovereign and the source of any authority in government.