There are allegations cigarette manufacturers are gaming the tax system to keep people hooked.
A Maori public health organisation says cigarette companies are being a bit sneaky with how they add taxes.
Each year on January the first, the excise tax on tobacco rises 10 percent.
Companies are expected to pass the cost of this on to the consumer, reports Newstalk ZB.
Maori public health organisation, Hapai Te Hauora, say the way the tax is paid allows cigarette companies to only add a little more to cheaper cigarettes, and proportionally more on expensive ones.