Fonterra said it was ultimately up to retailers to set the price of milk for consumers.
Details on the wholesale price drop and how long it would be down for were still being worked out.
The doubling of international dairy prices in the last 18 months has pushed domestic milk prices up and consumption down.
Traditionally, milk consumption in New Zealand increased 1-2 per cent annually but high prices have led to a decrease by a similar rate.
Last month Fonterra announced it would reintroduce school milk, starting with a pilot in Northland school.
Foodstuffs, which runs Pak N Save, 4 Square and New World supermarkets, welcomed Fonterra's move to reset the local price of milk.
Managing director Steve Anderson said milk prices had been a hot topic the past year and he appreciated that it had been difficult for many Kiwis to keep milk on their shopping list.
"We have always worked with suppliers to bring the best possible prices to our customers. We are pleased to hear that Fonterra are planning to reset milk prices within New Zealand, and we are looking forward to passing any savings directly to our customers."
Luke Schepen, spokesman for Progressive Enterprises, which runs Countdown supermarkets, said the company would to wait to see what Fonterra's new price was before deciding what saving it could pass on to customers. He said the company was always looking to pass on savings.