Aucklander Miriam Clements wants a national referendum on whether the North Shore should become independent from New Zealand.
Clements, a member of the Logic Party and who ran for North Shore MP in last year's election, believes the North Shore should have its own Reserve Bank and be completely independent from the rest of the country.
She also thinks the area should have its own currency.
Clements has asked a clerk of Parliament and the Governor-General for permission to hold a non-binding referendum on the matter.
Clements, a legal strategist, said she envisaged it working along the same lines as Monaco.