In New Zealand, the minimum age limit for casino gambling is 20. However, younger players can access other forms of gaming such as Bullseye, Keno, play 3 tickets, instant Kiwi lottery, instant play, pokies, scratch cards, pari-mutuel wagering, and housie.

The New Zealand gambling industry is regulated by several parties such as parliament, the New Zealand Gambling Commission, Department of Internal Affairs, New Zealand Lottery Commission, TAB, Ministry of Health, New Zealand Racing Board, the Second Labour Government, Ministry of Social Development, and many more. Nevertheless, a significant number of these agencies act as oversight and record-keeping to monitor the effects of gaming on the country.

If an underage is caught in a casino, they can be fined up to NZ$ 500, and depending on the casino found in, a trespass order could be issued against the underage gambler. The person might also be blocked from accessing the casino for two years, even if they turn 20 within that period. New Zealand visitors who violate the law and illegally gamble as underage risk facing severe effects on the eligibility of renewing their visiting permit.

New Zealand citizens are free to play casino games online if they access NZ 18 plus online casino from licensed offshore sources, as no law prohibits this kind of access. The country only prohibits access to domestically licensed online gambling sites that are not lottery or TAB-provided betting services.