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

Donna Zillmann
Practice Manager, Business Advisor
B.Bus. (Acct’g), CPA, Registered Tax Agent
Donna completed her Bachelor of Business in Accounting at CUQ with distinction. 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. She received her CPA status in 2011 with a High Distinction in Taxation and further became a Registered Tax Agent in 2013. Her professional expertise is focused on business accounts and taxation. Furthermore, she offers a range of Business Advice to her clients. She is expert in Xero, Quickbooks, and MYOB.

Trish McNaughton
Accountant
B.Com
Starting with Concord Tax - Kirwan in November 2023, Trish has had many years of experience, working within accounting firms in SE QLD and Central NSW, before moving to Townsville in 2019. She has also worked within many industries, including: mining, facilities maintenance, hospitality & accommodation, transportation (both goods & people) and retail and as such brings a broad understanding of the operations of many business structures and operations. Trish graduated her Bachelor of Commerce with Majors in Accounting & Finance in 2013 and has a particular interest in Taxation and Business Advisory. Her interests outside of work include travel & spending time with family and friends.

Sujeep Maharjan
Accountant
Sujeep splits his time between Concord Tax - Kirwan and Revayah Tax, he takes on clients on Wednesday and Thursdays at the Kirwan Office. Sujeep received his Bachelors from Caspian Valley College and continued his education in Australia where he completed his Master of Professional Accounting. He looks forwarding to meeting new clients and tackling problems.

Naomi Boxsell
Administration Officer
Naomi is our Receptionist and Administration Officer. She takes care of the front office, our clients, the team, and the administration of our practice. Naomi has an interest in mathematics and chemistry and is looking to study a Bachelor of Science in the future. She looks forward to getting to know you and is always happy to help in anyway she can.
