IF THE FLAG DOES CHANGE, THE ONLY LEGISLATION NEEDING AMENDMENT IS THE FLAGS, EMBLEMS, AND NAMES PROTECTION ACT 1981
NZ FLAG FACT NUMBER 4
Some people have theorised that changing the flag could have constitutional implications. A number of comments maintain that if we remove the Union Jack, which represents the British monarchy, we will also end up removing the ‘due authority’ of the Crown. This idea is not correct. The only piece of legislation that the New Zealand government can amend if New Zealanders select the silver fern flag in the second referendum is the Flags, Emblems, and Names Protection Act 1981.
Changing the flag will have no influence on New Zealand’s constitutional arrangements or on our relationship with the Commonwealth. What a change will mean is that on official occasions and official days, government agencies will fly the silver fern flag to represent New Zealand. Anyone who wants to fly the current New Zealand flag will still be allowed to do so.
From New Zealand Flag Facts by historian Malcolm Mulholland. Read more at: