About TMNZ

TMNZ is New Zealand’s leading tax payment intermediary. Our clients include thousands of small and medium-sized businesses as well as some of New Zealand’s largest banks, state-owned enterprises and well-known corporate names. TMNZ sets the very highest security standards for reliable and secure management of our clients’ tax payments.

Ian Kuperus

Our founder

No-one understands tax pooling better than TMNZ. Our founder Ian Kuperus helped to pioneer the industry back in 2001. Since then, he was made a fellow of Chartered Accountants Australia and New Zealand to recognise his contribution.

Tax pooling is an IRD approved service that helps businesses make the right tax payments at the right time.

So instead of paying IRD directly, taxpayers pay into the tax pool when it suits them and TMNZ makes payments to IRD on their behalf. It’s like a balancing act; since some businesses like to overpay tax during earlier dates, this helps to cover those businesses that need more flexible tax payment arrangements. And that’s the tax pool.

Advocating best practice accounting, we have a number of industry and association partnerships

Wolters Kluwer

Wolters Kluwer creates value for accountants, lawyers and other business professionals by combining actionable information, subject-matter expertise, and cutting-edge technology.


The Accountants and Tax Agents Institute of New Zealand (ATAINZ) exists to promote the welfare and professional development of its members and to represent members' interests in New Zealand.


Established in 2001 NZ CA is an association of 28 Independent Chartered Accounting firms employing more than 400 professional accounting staff with over 200 support staff.

Chartered Accountants Australia New Zealand

The associations vision is to empower our members to become leaders and shapers of finance and business in Australia New Zealand and wherever they may work around the world.

Our team and values

TMNZ are 100% New Zealand owned and operated company. We are absolutely dedicated to serving clients and we’ve made it our mission to create a better tax environment for New Zealand businesses.




Social Responsibility