About us

Graham Case Concord Tax

Graham Case is a Fellow of CPA Australia with 30 years of experience. His work mainly comprises of tax specialist and business advisory work. Small business is his most passionate interest.  Graham commenced his accounting career with KPMG a big four accounting firm. He soon went into practice on his own.  He has enjoyed a long association with Concord Tax since 1989.  Graham has a broad experience with all business structures. His taxation knowledge, industry exposure, and familiarity with small business will be invaluable to you when advice is needed.  Graham's main strength is his capacity to think outside the box, find solutions, and solve problems.View Graham's profile on LinkedIn Book an appointment with Graham    

Graham Case FCPA, B.Bus. (Acct’g), J.P. (Qual.), Reg’d Tax Agent

Managing Director
  Donna Zillmann completed her Bachelors at CUQ.  First of all, she commenced working for a large accounting practice in Mackay in 2004.  In 2008 she relocated to Townsville and commenced working with Concord Tax - Kirwan.  Donna is a CPA and a Registered Tax Agent.  Consequently she completes complex Financial Reports, and Company Taxation Returns. Furthermore, she offers a range of Business Advice to her clients.  She is expert in Xero, Quickbooks, and MYOB.  Finally Donna has completed many thousands of taxation returns. Investment properties; Managed fund Investments;  Retiree Tax Returns;  Deceased Estate Returns; Non-resident Tax Returns. View Donna's profile on LinkedIn. Book an appointment with Donna

Donna Zillmann B.Bus. (Acct’g), CPA, Registered Tax Agent

Practice Manager, Business Advisor
Kerry Orro Taxation Specialist
Kerry Orro gained a wealth of experience working for the Justice Department, the Public Trustee, the Valuer-General's Department and the Lands Department.  She also serves as a Justice of the Peace (Qualified). In 2015 she accepted a position with Concord Tax as a public accountant.  Kerry specialises in general taxation services for individuals and small businesses. She graduated Business at James Cook University, majoring in Accounting and is CPA. As a Defence spouse herself, she has an understanding of the challenges faced by military families   As a mother and grandmother, she also can relate to the juggling of time, money and energy needed to raise a family. View Kerry's profile on LinkedIn. book an appointment with kerry

Kerry Orro B.Bus. (Acct’g.), J.P. (Qual.)

Carol Quinn is our Administration Officer.  She takes care of client services, all the administrative duties, and office staffing and management.  If you have any needs or concerns she will be able to assist you. More importantly Carol brings maturity, experience, and her caring attitude to the practice. She has served as a company accountant for over ten years in the construction industry and brings with her extensive business knowledge.   Carol is interested in  and has invested in the property market in North Queensland.  She enjoys her association with her family being a mother of three, and a grandmother of six.    

Carol Quinn (Administration Officer)

Office Manager
Ariana Orro
Ariana is our Client Services Officer here at  Concord Tax.  She takes care of everything in the front office, and can certainly help you connect to your accountant or advisor.   She works with us on Wednesdays and Fridays, and of course, we will see her a lot more throughout tax season. Ariana recently returned from England, having spent 18 months there on a mission, helping and serving the people of the West Midlands.

Ariana Orro

Client Services Officer

Concord Tax - Kirwan. A Family Accounting Practice.

Taxation & Business Services

Concord Tax is a CPA Practice. The team are personally selected for their qualifications and expertise. The most important selection criteria is their character.

Tax Consulting

Bringing you top value

We understand the importance of well organised tax accounting. We get the most out of it and keep following all the changes in the law all year long.

Digital Meeting

Concord Tax Team

Concord Tax Kirwan History

Concord Tax – Kirwan  opened in practice in 1986, 30 years ago with Fred Cole as Managing Partner.  The vision was to exemplify two main ideas.  Concord means harmony.  There is a constant focus on our team working together, with you, to achieve your goals.  We have aimed to achieve this by selecting people with caring personalities who are highly qualified and driven to provide our services. Each team members is constantly upgrading and improving their knowledge and skills.  The second notion is to use the latest financial tools and technologies to produce the best result possible for you.  We operate a paperless office, utilise advance computing hardware and software that allows us to operate seamlessly in Townsville, Brisbane, and Signapore.

In 2005,  Graham Case FCPA took over as Managing Director.  We have specialised in taxation services, business advice, SMSF and super funds.