NZ Emissions reporting in 2026: Who needs to measure, report, and verify what?
New Zealand now has four overlapping emissions reporting regimes - each with different rules, agencies, and verification requirements. This is a plain-English map of who sits where, and what they need to do.
Ask a CFO in Auckland and a sustainability manager in Wellington the same question - "do we need to report our emissions?" - and you might get four different answers. That is not a communication failure. It is a genuine structural problem: New Zealand has four distinct emissions reporting regimes operating at the same time, each with its own agency, obligations, and timeline.
This guide maps them out clearly. It does not try to cover every edge case. What it does is give you a starting point to understand which regime applies to your organisation, what the core obligations look like, and where independent verification enters the picture.
In October 2025, Cabinet announced significant changes to the mandatory Climate-Related Disclosures (CRD) regime, including raising the listed-issuer threshold and removing managed investment schemes. The XRB also extended Scope 3 GHG emissions assurance adoption provisions by two further reporting periods. Some information published before late 2025 may be out of date. Where this guide discusses the CRD regime, we reflect the current position as of April 2026. For obligations specific to your balance date, always check the XRB and FMA websites directly.
The four regimes - a quick orientation
Any NZ organisation measuring and reporting emissions under the Ministry for the Environment's guidance. Voluntary - but increasingly expected by customers, investors, and tender assessors.
Public service agencies must measure, verify, and reduce their operational emissions. Not voluntary for in-scope entities. Administered by MfE.
Large financial-market participants - certain banks, insurers, listed issuers - must publish climate statements aligned with XRB standards. GHG emissions disclosures must be independently assured.
A compliance-market obligation, not an organisational inventory. ETS participants (fuel suppliers, forestry operators, certain industrial processors) file an Annual Emissions Return with the EPA by 31 March each year.
These four regimes can overlap. A large bank might be simultaneously running a voluntary inventory aligned with MfE guidance, filing mandatory CRD climate statements including assured GHG disclosures, and holding NZUs under the ETS. A local council might sit across the voluntary and CNGP regimes. A small private business might sit in none of them formally - but face indirect pressure from customers or supply chains that do.
Regime 1: Voluntary organisational emissions reporting (MfE)
The Ministry for the Environment (MfE) publishes guidance for organisations that want to measure and report their greenhouse gas emissions on a voluntary basis. The two most commonly used standards in New Zealand are the GHG Protocol Corporate Accounting Standard and ISO 14064-1:2018. These cover how to define your boundary, identify emission sources, select measurement methods, and report Scope 1, 2, and 3 emissions.
Voluntary reporting is, as the name suggests, not legally required. But it is becoming commercially necessary. Organisations are increasingly required to provide emissions data to customers, financiers, and procurement assessors. The voluntary tier is where most private businesses and many councils start.
If your organisation publicly states it is "carbon neutral," "net zero," or "low carbon," that claim is subject to scrutiny under the Fair Trading Act and Commerce Commission guidance. Independently verified data is not just good practice - it is legal protection. Verification does not need to be mandatory for the law to care about the accuracy of what you say.
Regime 2: Carbon Neutral Government Programme (CNGP)
The CNGP applies to public service agencies and is administered by MfE. In-scope agencies are required to measure their operational emissions, have those emissions independently verified, and report publicly. This programme has been operating since 2020 and now covers a significant number of central government agencies.
CNGP verification is a distinct service from general voluntary assurance. It requires verifiers who are familiar with the programme's specific requirements, approved measurement sources, and reporting format. Independent verification must be completed before the agency publishes its annual emissions report.
Opportune holds a position on MfE's approved supplier list for CNGP advisory, measurement, and verification services. [PLACEHOLDER: Confirm current MfE supplier list status and whether to include this claim here.]
Regime 3: Mandatory climate-related disclosures (CRD) - and the October 2025 changes
The mandatory CRD regime applies to Climate Reporting Entities (CREs) - a category defined by the Financial Markets Conduct Act 2013. As originally structured, this included:
- Registered banks, credit unions, and building societies with total assets exceeding $1 billion
- Licensed insurers with total assets exceeding $1 billion or annual premium income exceeding $250 million
- Listed issuers of quoted equity securities with combined market price exceeding $60 million
- Managers of registered investment schemes (other than restricted schemes) with more than $1 billion in total assets under management
In October 2025, the government announced it would raise the mandatory reporting threshold for listed issuers (both equity and debt) to $1 billion, and remove managed investment schemes from the mandatory regime entirely. The Financial Markets Conduct Amendment Bill, expected to be passed in 2026, will implement these changes. From 31 March 2026, listed issuers only face mandatory CRD obligations if their market capitalisation exceeded $1 billion in each of the two preceding reporting periods. The FMA has been providing "no action" relief to affected entities from 1 November 2025 while legislation progresses. If your organisation's status changed as a result of these decisions, confirm your current obligations with legal counsel or directly with the FMA.
GHG assurance under the CRD regime
For entities that remain within the mandatory CRD regime, an important obligation is independent assurance over GHG emissions disclosures. Under the Financial Markets Conduct Act, CREs must ensure that the parts of their climate statements relating to GHG emissions are the subject of an assurance engagement.
- Scope 1 and 2 GHG assurance has been required for financial years ending on or after 27 October 2024.
- Scope 3 GHG assurance: In November 2025, the XRB's Sustainability Reporting Board (SRB) decided to extend the adoption provisions for Scope 3 GHG emissions disclosure and assurance by two further reporting periods. This means mandatory Scope 3 assurance is not yet required for most entities. The exact deadline depends on your balance date - check the XRB's current adoption provisions directly.
- The minimum level of assurance required is limited assurance. Entities may voluntarily obtain a higher standard (reasonable assurance) over some or all disclosures.
The assurance must comply with NZ SAE 1 - Assurance Engagements over Greenhouse Gas Emissions Disclosures, issued by the XRB.
Regime 4: NZ ETS Annual Emissions Return
The New Zealand Emissions Trading Scheme (ETS) is a compliance mechanism, not an organisational reporting regime. ETS participants - primarily fuel suppliers, industrial processors, and forestry operators - are required to submit an Annual Emissions Return (AER) to the EPA each year by 31 March, covering the previous calendar year.
This is importantly different from a GHG Protocol-based emissions inventory. The ETS tracks units (NZUs) rather than organisational GHG footprints in the usual sense. Third-party verification is not required for ETS emissions returns - the system uses self-reporting supplemented by government audits.
Key 2026 ETS facts: The annual cap is 16.3 million NZUs. The floor auction price is NZD $71 per NZU. Agriculture was removed from the ETS in 2024, meaning farm-level MRV obligations that had been planned for 2026 no longer apply.
Which regime applies to your organisation?
Use the flow below as a starting point. It is not legal advice - but it should help you identify which of the four regimes to investigate further.
Where verification fits into each regime
The word "verification" means different things depending on the regime. Here is a quick comparison:
- Voluntary / MfE reporting: Verification is not required but significantly strengthens any claim or disclosure. It provides confidence to stakeholders that your inventory is accurate and methodologically sound.
- CNGP: Independent verification is required before public reporting. Verifiers must be from MfE's approved supplier list.
- CRD (mandatory): GHG emissions disclosures must be subject to an independent assurance engagement under NZ SAE 1. At a minimum, limited assurance is required. Scope 1 and 2 assurance is required now; Scope 3 assurance has been extended.
- NZ ETS: Third-party verification is not required. The EPA uses self-reported data and conducts its own compliance review programme.
In everyday usage these terms are often used interchangeably. Technically, "assurance" refers to engagements conducted under formal assurance standards (such as NZ SAE 1) and produces a formal assurance conclusion. "Verification" is often used more broadly, including for CNGP checks and ISO 14064-3 based reviews. When reviewing what your organisation needs, it matters which standard applies - not just the word used to describe the service.
What to do next
If you are not yet certain which regime applies to your organisation, the most productive first step is usually a short scoping exercise: define who you are, what assets and activities you have, whether you are an in-scope entity under any of the four regimes, and what commercial or contractual obligations may require emissions data independently of legal requirements.
For most private businesses, the voluntary regime is the logical starting point. For public-sector agencies, CNGP requirements should already be understood. For financial-market entities, the revised thresholds announced in October 2025 need to be assessed carefully - particularly if your organisation is near the boundary of mandatory reporting.
The regulatory picture changed materially in the last six months. If you have not revisited your obligations since mid-2025, now is a good time to do so.
Not sure where your organisation sits?
Opportune helps CFOs, sustainability managers, and public-sector teams understand their exact obligations and build inventory and assurance programmes that are fit for purpose. Reach out for a no-obligation scoping conversation.
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