The Ministry for the Environment has only received one report of a business providing a banned plastic shopping bag less than a day into the ban.
The ban, which kicked in today, prohibits retailers from supplying single-use plastic bags and those who do could face a fine of up to $100,000.
All plastic bags with handles, including thicker boutique-style bags, and any described as biodegradable, fall under the ban.
In a bid to crack down on businesses who continue to supply plastic bags, the Ministry for the Environment has developed an online complaints portal.
Asked at 4.30pm how many reports had been filed, a spokesman for the ministry told the Herald only one had been reported.