The government initially intended phasing it in from October 2016 so the fishing industry would have time to adjust.
Conservation Minister Nick Smith says that issue has been overcome, and he’s praising the industry for the way it’s worked with the government.
The ban will apply to all species of shark in all New Zealand fisheries.
It’s already an offence under the Animal Welfare Act to fin a shark and return it to the sea alive.
Under the ban it will also become illegal to catch a shark, kill it, remove its fins and dump the carcass in the sea.