Are your investments aligned to your values?

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Invest in the future you want to see

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Avoid companies with principal business activities in fossil fuels, weapons, and tobacco.

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Ensure your investment lives up to its ethical claims

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Trust MAS to invest your money responsibly

  • Owned by our Members
  • Serving our Members for over 100 years
  • Our profits help fund the MAS Foundation, supporting health and wellbeing equity in Aotearoa.

Reduced exposure to climate risk


>60% less carbon emissions (1)

fossil fuel drilling

Avoid companies with principal business activities in fossil fuels (2)

climate change temp rise

<2 degrees Celsius of implied temperature rise (3)

5x more investment in alternative energy*

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Independently certified and recognised

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mindful money transparent
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Drive change from within

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Be represented by MAS at company meetings where we use our shareholder voting rights to advocate for triple bottom line values - people, planet, and profit.

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As an active steward of your money, we engage with the companies the funds invest in to campaign for human rights, labour rights, anti-corruption, and the environment.

“If you’re going to be spending your money and supporting one company over another, you should be putting your dollars where it counts.”

Katherine Reinhold, Lawyer

(1) Compares the weighted average carbon intensity of equities (scopes 1 & 2) in the MAS KiwiSaver Scheme to the MSCI All Country World index as of 30 September 2023. 

(2) We do not invest in any company that derives 10% or more of its revenue from the exploration, extraction, refining, or processing of fossil fuels. 

(3) According to MSCI data, as of 30 September 2023, the implied temperature rise of equities within the MAS KiwiSaver Scheme was 1.9°C as compared to an implied temperature rise of 2.5°C for the MSCI All Country World Index.

*Compares the revenue exposure from alternative energy technologies of equities in the MAS KiwiSaver Scheme to the MSCI All Country World index as of 30 September 2023. MSCI defines alternative energy technologies as products and services that support the transmission, distribution, and generation of renewable energy and alternative fuels to reduce carbon and pollutant emissions in supporting affordable and clean energy to combat climate change.

The RIAA Certification Symbol signifies that a product or service offers an investment style that takes into account certain environmental, social, governance or ethical considerations. The symbol also signifies that the MAS KiwiSaver Scheme and MAS Retirement Savings Scheme adheres to the strict operational and disclosure practices required under the Responsible Investment Certification Program for the category of Superfund option. The Certification Symbol is a Registered Trade Mark of the Responsible Investment Association of Australasia (RIAA). Detailed information about RIAA, the Symbol and the MAS KiwiSaver Scheme and MAS Retirement Savings Scheme methodology and performance can be found at, together with details about other responsible investment products certified by RIAA

The Responsible Investment Certification Program does not constitute financial product advice. Neither the Certification Symbol nor RIAA recommends to any person that any financial product is a suitable investment or that returns are guaranteed. Appropriate professional advice should be sought prior to making an investment decision. RIAA does not hold an Australian Financial Services Licence.

Medical Funds Management Limited is the manager and issuer of investments in the MAS KiwiSaver Scheme and the MAS Retirement Savings Scheme (the Schemes). Copies of the Product Disclosure Statements (PDS) for each Scheme are available for KiwiSaver and Retirement Savings. If you would like to talk to a MAS adviser, phone 0800 800 627 or email