Interest rates are subject to change. The above rates are valid for investments of $10,000 to $5 million. If you're investing more than $5 million, please contact us for rates. Interest Rate in New Zealand averaged 7.26 percent from 1985 until 2019, reaching an all time high of 67.32 percent in March of 1985 and a record low of 1 percent in August of 2019. This page provides - New Zealand Interest Rate - actual values, historical data, forecast, chart, statistics, economic calendar and news. At time of writing, a $100,000 investment on a 12-month term deposit would pay $3,450 at maturity with the maximum interest rate available on Canstar’s database (3.45%), but only $3,000 on the minimum rate (3.00%), a difference of $450, according to Canstar’s latest comparison of term deposit rates.