Common questions

Frequently asked questions and answers on CPTPP.

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Participants and Process

When did New Zealand ratify CPTPP?

New Zealand ratified CPTPP on 25 October 2018, after the legislation required to implement the Agreement received Royal Assent.

When did CPTPP enter into force?

The Agreement entered into force on 30 December 2018 after six signatories ratified - Mexico, Japan, Singapore, New Zealand, Australia and Canada. Since then, Viet Nam, Peru, Malaysia, Chile and Brunei Darussalam have also ratified CPTPP with the Agreement entering into force for them 60 days later on 14 January 2019, 19 September 2021, 29 November 2022, 21 February 2023, and 12 July 2023 respectively.

Why is the timing of Japan's tariff cuts different?

Japan's tariff cuts occur on 1 April each year to coincide with its financial year. So in Japan's case, the first tariff cut was on entry into force and a second would occur on 1 April 2019.

Every other Party make tariff cuts on 1 January each year after entry into force.

Accession by other economies

Can other economies join the CPTPP?

Yes. CPTPP members agreed accession procedures in 2019.

Other economies are increasingly indicating an interest in joining the CPTPP through the open accession clause in the Agreement. In February 2021, the United Kingdom lodged the first formal request to join since CPTPP took effect. China lodged the second request on 16 September 2021, Chinese Taipei lodged the third on 22 September 2021, Ecuador the fourth on 17 December 2021, Costa Rica the fifth on 10 August 2022, Uruguay the sixth on 1 December 2022, and Ukraine the seventh on 5 May 2023.

CPTPP may, therefore, lead to better access to even more markets for New Zealand exporters further down the track.

The United Kingdom and CPTPP members signed the Protocol for the Accession of the UK to CPTPP at the 7th Commission Meeting hosted by New Zealand on July 16th 2023. This makes the United Kingdom the first new economy to join since the agreement was signed in 2018.

Will the accession of other economies change the agreement?

No. New members applying to join the CPTPP will need to comply with the existing CPTPP Agreement. This means the existing rules and obligations, as well as the exceptions that apply in the existing CPTPP Agreement, will not change.

What is the process for a new member to join the agreement?

A prospective new member to the CPTPP is welcome to engage with members to get a better idea of what the Agreement involves.

If they wish to proceed, they must make a formal request to join the Agreement. Under the accession procedures, the prospective new member is then encouraged to consult with the existing members to address any questions or concerns that the existing members may have.

The CPTPP Commission (the Agreement’s peak decision-making body) will then decide whether to start the accession process with a specific applicant. If it wishes to proceed, the CPTPP Commission will establish a Working Group made up of participants from all the CPTPP Parties. The focus of the Working Group’s work will be ensuring that the economy that wants to join is able to comply with the obligations set out in the CPTPP.

When the Working Group concludes, it will report back to the CPTPP Commission who will make a final decision on whether a prospective member can join the agreement.

As a CPTPP Party, New Zealand has a seat at the table throughout these decisions.

How to find out more about the accession process

Find out more and participate in our consultation on accession to the agreement by emailing or

New Zealand's sovereignty

Does the Agreement affect the Treaty of Waitangi?

The CPTPP contains a Treaty of Waitangi exception that explicitly allows the government to adopt any policy it considers necessary to fulfil its obligations to Māori.

This unique provision allows the government to implement policies which benefit Māori without being obliged to offer equivalent treatment to persons from other CPTPP economies.

The Treaty of Waitangi exception is just one of a number of exceptions and reservations which ensure that our government retains its right to regulate in the public interest.

Does CPTPP undermine New Zealand’s sovereignty?

No. We can continue to make our own choices that are in our own best interests. New Zealand also retains the right to withdraw from the Agreement in the future should the government wish to.

We have preserved our right to regulate in the public interest, including in relation to our health system, Pharmac, our public education system, our environment, our biosecurity, our national security and our national treasures.

As with other trade agreements, the CPTPP reaffirms the participating economies’ commitment not to deliberately misuse regulations that are not for legitimate public purposes but are unjustified disguised or discriminatory barriers to trade.

We have an interest in ensuring that other economies do not introduce disguised protectionist trade barriers on our exports, where these have no legitimate policy rationale.

Can New Zealand face an ISDS case on tobacco control measures?

No. We have also notified signatories that investor state dispute settlement (ISDS) claims challenging tobacco control measures cannot be made against New Zealand under article 29.5.

This is in keeping with this Government's view on ISDS. It is a further measure, alongside the suspensions and side letters, to reduce the risk of successful ISDS cases being brought against New Zealand under CPTPP.

Australia and Peru have also taken this step, which Parties are able to do at any time.


Will New Zealand still be able to screen overseas investment?

The CPTPP preserves our right to screen overseas investment in the three existing areas of significant business assets, sensitive land (including farmland), and fishing quota.

New Zealand also maintains the right to change screening criteria in relation to those areas.

Is Investor-State Dispute Settlement (ISDS) in the Agreement?

Yes, but there is reduced scope for investors to use ISDS to take a case against the New Zealand Government.

Under CPTPP, private companies who enter into an investment contract with the government will not be able to use ISDS if there is a dispute about that contract. New Zealand’s investment screening regime also remains excluded from ISDS.

Reciprocal side letters with Australia, Brunei Darussalam, Chile, Malaysia, Peru, the United Kingdom and Viet Nam mean that compulsory ISDS will not apply between New Zealand and these economies.

This means that over 80% of foreign direct investment into NZ from CPTPP parties by value will not be subject to ISDS – in other words, investors that provide over 80% of investment from the CPTPP region into New Zealand will not be able to use the CPTPP ISDS mechanism to sue the New Zealand Government.

New Zealand will not allow investor state dispute settlement cases on tobacco control measures. This is a further measure, alongside the suspensions and side letters, to reduce the risk of ISDS cases being brought against New Zealand under CPTPP.

Why was ISDS not removed from CPTPP altogether?

While some economies share New Zealand’s concerns, others wanted to retain ISDS as they consider it a commercial priority. In these circumstances, and given it was part of the TPP, it was not possible to remove ISDS altogether.

Will CPTPP expose New Zealand to ISDS for the first time?

New Zealand currently has ISDS with around 14 economies. This was negotiated as part of Bilateral Investment Treaties with China (1989) and Hong Kong (1995) and more recently as part of FTAs with Singapore (2001), Thailand (2005), China (2008), ASEAN countries (2009), Malaysia (2010), Chinese Taipei (2013) and Korea (2015). To date, no ISDS claims have been filed against the New Zealand Government under any of these agreements.

Given that investors can sue governments in ISDS cases, won't the ISDS provisions in CPTPP be risky for New Zealand?

As part of CPTPP, we negotiated successfully to secure strong safeguards around what can and can't be subject to ISDS claims. These safeguards will ensure the government is not hindered in its ability to regulate in the public interest. The new agreement narrows the scope for investors to successfully sue the New Zealand Government, compared with the Trans Pacific Partnership.

Does ISDS give foreign companies an advantage over New Zealand companies?

New Zealand investors cannot bring an ISDS claim against the New Zealand Government and only have recourse through domestic legal procedures. New Zealand investors do have the right to take ISDS cases against CPTPP economies where New Zealand has not excluded ISDS through a side letter. ISDS claims brought under the CPTPP can only relate to disputes about the investment provisions of CPTPP though New Zealand is also subject to other agreements which include ISDS.

Do corporations get to dictate how ISDS panels are formed?

The CPTPP text has procedures that would govern the formation of ISDS panels.

The panels would have three arbitrators: one appointed by the government, one appointed by the claimant and a presiding arbitrator appointed by the government and the claimant together.

Labour and environment

How does the CPTPP affect labour standards?

CPTPP constitutes one of the strongest outcomes on trade and labour contained in any of New Zealand’s free trade agreements to date.

The commitments made in the labour chapter are intended to protect and enforce labour rights, improve working conditions and living standards, strengthen cooperation on labour issues and enhance labour capacity and capability of CPTPP parties.

For the first time, these obligations can be enforced through dispute settlement.

The provisions help level the playing field for New Zealand companies and employees by setting common labour obligations for all CPTPP parties.

This helps ensure that CPTPP parties do not have a competitive advantage in trade based on poorly-enforced or inadequate labour laws. More information on the specific obligations can be found on our webpage on labour and environment in CPTPP.

What are the main environmental outcomes of the CPTPP?

CPTPP constitutes one of the strongest outcomes on trade and environment in any of New Zealand’s trade agreements to date.

The commitments in the environment chapter help protect the environment by requiring parties to follow through with commitments made in international environmental agreements and by making these subject to dispute settlement.

The agreement also introduces new disciplines on fisheries subsidies that contribute to over-fishing, and obligations requiring the parties to take action to address the illegal trade of wild flora and fauna. More information on the specific obligations can be found on our on our webpage on labour and environment in CPTPP.

Can New Zealand continue to protect its environment?

CPTPP includes a number of exceptions and reservations which ensure that the government retains the right to regulate in the public interest, including in relation to the environment.

Pharmaceuticals and intellectual property

Will CPTPP have an impact on the government’s right to regulate in the area of public health and what does it mean for Pharmac?

CPTPP includes a number of exceptions and reservations which ensure that the government retains the right to regulate in the public interest, including in relation to public health.

Pharmac’s purchasing model remains protected, including its ability to negotiate the best price for medicines for New Zealanders.

What other pharmaceutical-related provisions have been suspended?

Under CPTPP, there is now no requirement for New Zealand to change or retain its existing data or market protection settings for new medicines, including biologics (medicines derived from a living system such as plant or animal cells).

CPTPP economies also agreed to suspend the obligations to extend the term of a patent in cases where there had been unreasonable delays in:

i) granting that patent, or

ii) if the patent was for a medicine, obtaining approval for the medicine’s entry into the New Zealand market.

Which other intellectual property provisions have been suspended?

A number of the intellectual property provisions included in the TPP will be suspended from the CPTPP, saving us from having to make changes likely to impose some costs on New Zealand.

For example, we no longer need to extend our copyright term to 70 years (from 50 years). This removes one of the most significant quantified costs of the TPP for New Zealand.

A total of 11 intellectual property provisions have been suspended from the CPTPP. 

What intellectual property changes has New Zealand made to comply with CPTPP?

Minor changes to the Copyright Act 1994, Patents Act 2013 and Trade Marks Act 2002 came into effect on 30 December 2018. These included:

  • new moral and property rights for performers, especially in regards to sound recordings made from their performances;
  • a 12-month grace period for patent applications;
  • introductions of additional damages as a remedy for trade mark infringements; and
  • ex-officio powers for New Zealand Customs Service at the border to detain suspected shipments of pirated copyright works and trade mark infringing goods without a notice from rights holders.

The suspension of 22 items from the original TPP text - many of which were in the intellectual property chapter - mean certain issues of concern to New Zealand will no longer apply.

Goods outcomes

What market access outcomes were achieved?

With the exception of market access to the United States, all the other market access outcomes New Zealand achieved in the TPP were retained in CPTPP.

This includes providing New Zealand exporters with preferential access for the first time into Japan, the world’s third-largest economy and our fifth-largest export market.

CPTPP is also New Zealand’s first free trade agreement (FTA) relationship with Canada, Mexico, and Peru.

The high-quality outcomes negotiated in CPTPP mean it will also deliver some benefits for our investors and exporters over and above the market access we achieved in our existing FTAs with Brunei, Chile, Malaysia, Singapore, and Viet Nam.

This is critically important as some of our competitors in these markets already enjoy lower tariffs because of their own separate free trade agreements.

The Agreement will continue to grow and provide new opportunities for New Zealand businesses operating under the CPTPP. The UK has formally acceded to the Agreements and there are 6 further applicants.

What will CPTPP deliver for goods exporters?

NZ $95 million of goods export savings will start as soon as the CPTPP enters into force. Our previous experience suggests that these are conservative estimates.

By way of comparison, for instance, the annual tariff reductions from New Zealand’s free trade agreement with China were initially estimated at NZ$115 million a year.

Since then, trade growth has seen New Zealand’s annual exports to China quadruple.

Services outcomes and government procurement 

What benefits does CPTPP provide to services exporters?

CPTPP helps to level the playing field for New Zealand services exporters.

Other CPTPP economies have committed to treating New Zealand services suppliers the same as their domestic services suppliers in a number of areas including professional, business, education, environmental, transportation and distribution services.

Will CPTPP constrain the government's ability to fund public education?

CPTPP has no effect on the New Zealand government's discretion to fund public education in the way we want to.

What benefits does CPTPP provide in terms of government procurement?

CPTPP opens up greater opportunities to bid for foreign government contracts, particularly in Malaysia, Mexico, Peru and Viet Nam.

New Zealand businesses will be able to compete for government procurement contracts in CPTPP economies on an equal footing with domestic suppliers.

CPTPP also provides New Zealand with better access to government contracts in Canada, Japan, and Singapore over and above the access we have already secured to those markets through the World Trade Organisation Agreement on Government Procurement.

Do government procurement commitments in trade agreements limit central and local government’s ability to spend taxpayer and ratepayer money on locally made goods and services?

New Zealand’s government procurement rules, which reflect our international commitments, are designed to ensure the government spends taxpayer money transparently and delivers the best outcomes for New Zealanders. These rules don’t disadvantage or prejudice New Zealand businesses in competing for government contracts.

Through our free trade agreements, the Government has opened up new opportunities for our New Zealand businesses to sell goods and services to foreign governments. Since government markets offshore are sizable as well as diverse, guaranteed access to compete in these markets benefits New Zealand businesses by providing export opportunities across a wide range of goods and services and are an avenue for greater diversification of New Zealand’s economy.


What does the CPTPP e-commerce chapter mean for data transfer and localisation rules?

CPTPP's e-commerce chapter contains rules which help ensure businesses are able to transfer data across borders, and are not forced to store their data within any particular jurisdiction.

This helps to remove trade barriers for New Zealand exporters, particularly those operating in more innovative, data-driven sectors.

These rules come with a “public policy safeguard”, which gives governments the discretion to control the movement and storage of data for legitimate public policy objectives.

This is designed to ensure governments are able to respond to the changing digital landscape in areas such as privacy, data protection and cybersecurity.

Was any legislative change be required as a result of these provisions?

No. New Zealand currently maintains several measures that control the movement and storage of data.

We restrict the movement offshore of sensitive personal health data, for example, and require businesses to store tax data in New Zealand or with an offshore provider approved by the New Zealand Tax Commissioner.

CPTPP will not prevent New Zealand from applying these kinds of measures because they fall within a "public policy safeguard" included as part of these provisions.

What was the outcome of the Waitangi Tribunal claim relating to the e-commerce chapter?

On 19 November 2021 the Waitangi Tribunal's final report [PDF, 993 KB] on the WAI2522 enquiry into the CPTPP was released. The report focused on four articles in the CPTPP's e-commerce chapter. The Tribunal found that in negotiating this chapter, the Crown breached the Tiriti o Waitangi/ Treaty of Waitangi principles of partnership and active protection for the taonga that is mātauranga Māori. You can read the government response here.

State-owned enterprises (SOEs)

Does CPTPP mean New Zealand can run state-owned enterprises the way we want?

The CPTPP aims to ensure a level playing field between state-owned companies engaged in commercial activities and their private competitors. 

It does this by addressing the potentially distortive effect that preferential treatment for SOEs can have on international trade and investment.

However, our own state-owned commercial companies are already set up to operate on a level playing field with privately owned companies and are subject to domestic competition laws.

New Zealand's current approach therefore meets the CPTPP obligations and is in line with international best practice. 

Does CPTPP prevent New Zealand from setting up the state-owned enterprises we want?

TPP does not prevent the government from establishing new state-owned enterprises.

Only New Zealand’s larger state-owned companies are covered by the obligations in the CPTPP. The CPTPP sets a threshold to exclude entities with an annual revenue from commercial activities below around NZ$400 million (to be adjusted every three years).

The provisions do not apply to entities such as district health boards, crown research institutes, or public health institutions and service providers.


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