Meanwhile, premium letter services, which is Fast Post and Box Link, would not change in cost, New Zealand Post said.
Mail going overseas is also set to cost more, with postage for aerogrammes, postcards and medium and large letters increasing by 10 cents on July 1.
Extra large and oversize letters heading overseas would go up by between 10 cents and 30 cents depending on the destination, New Zealand Post said.
Parcels going off-shore would increase by an average of 4 per cent, and the International Economy parcel service would be withdrawn and replaced with one from International Air, the company said.