Succession to the throne is by male-preference primogeniture, and governed by the provisions of the Act of Settlement, 1701, as well as the English Bill of Rights, 1689.
These documents are part of British constitutional law to which Belize defers for the line of succession; however, as per the Statute of Westminster, a part of Belizean constitutional law, no act of the British Parliament after 1931 has effect in Belize without the approval of the Belizean government.