Since its establishment in 2008, New Zealand’s NZ ETS has undergone three reviews and seven amendments, demonstrating its importance to the government’s climate change ambitions. A fourth review is presently underway in 2023. About half of all greenhouse gas emissions in the island nation of New Zealand are accounted for via the NZ ETS, which covers all significant economic sectors. The fact that agriculture accounts for almost half of the nation’s emissions presents a special problem for the government of New Zealand, which is still working to finalize its systems for pricing, reporting, and accounting for its farmers and growers.