How to extend the New Zealand tourist visa (from 30 days to 50 days)

If the person is already in New Zealand, directly fill in the tourist visa application forms INZ 1 188 and INZ 1027, and provide proof of funds. In fact, the passport is sent to the immigration office with the same materials and procedures as the previous visa application, waiting for approval, as long as it is submitted to the immigration office for acceptance before the visa expires.