Leading Waikato Accounting Firm since 1946

Making a positive difference for over 70 years.

Our Story

Osbornes Chartered Accountants (OCA) was established in 1946 by John Osborne who was a returned serviceman. The practice has continued to grow over the decades with some families being fourth generation clients.

Initially Osbornes serviced the local business community, with no farming clients, but we now service a large and diverse customer base ranging from plumbers to kiwifruit growers, passive investors to large corporate farmers.

Technology has been extremely important over the years for the firm, leading the way and adopting the best technological advances - most recently moving the practice to a cloud based system.

“Making a positive difference in your life is our core purpose”
John Osborne
Founder & Partner
John Osbornes

Net Promoter Score*

* Updated Sep 2019

Clients have worked with us to make a positive difference.


Establishment date, founded by John Osborne

Recent Milestones

Complete Office Renovation

November 2011

Move to Xero

February 2016

Xero Gold Partner Status Achieved

April 2016

Hamilton Office Grand Opening

May 2018

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Meet the the team of focused and friendly accountants behind Osbornes Chartered Accountants.

Meet the team

Experience the Osbornes difference.