Our Team

Qualified tax accountants and workers who listen first.

Sharp As Tax says there are no questions too insignificant to receive their undivided attention.

Our clients

Even after assisting thousands of individuals, none of them are exactly like you.

Sharp As Tax specialises in listening first to understand your unique situation in order to be the best accountant they can be for you.

Our staff

Fresh thinking comes from a healthy work-life balance.

Staff work an average of four days per week to stay fresh and think clearly, while still offering late-night and Saturday morning appointments around busy schedules.

People

Meet the team.

Garry Mueller, Director, Senior Tax Accountant

Since 2001

Garry Mueller

Director, Senior Tax Accountant

After a level crossing accident and rehabilitation, Garry retrained in accounting. Two years after integrating into accounting, he began managing Sharp as Tax, where he has worked passionately for 20 continuous years. Away from the office he enjoys travelling, long-distance trekking, mountaineering, paragliding, sailing, scuba diving, gardening, building things, old cars and motorbikes, and has completed 4 of the 7 summits.

Roshanthi Pinto, Senior Tax Accountant

Since 2011

Roshanthi Pinto

Senior Tax Accountant

Roshanthi migrated from Sri Lanka with her husband in 2009 and started working at Sharp as Tax in 2011. She completed a Bachelor of Science majoring in electronics, physics and pure maths, and has done up to Professional Stage 1 in Certified Management Accounting. She loves her job, proactively learns to help clients, and enjoys dancing, travelling, reading novels and time with her daughter.

Jessica Butler, Senior Tax Accountant

Since 2020

Jessica Butler

Senior Tax Accountant

Originally born in the Adelaide Hills, Jessica started at Sharp As Tax as a receptionist while completing her Commerce degree in accounting. After achieving CPA, she worked in a large city accounting firm for 8 years before returning to the hills. Her husband owns a local plumbing small business, and she enjoys family time, camping, bike riding, the river, arts and crafts, and wineries.

Disna Cooray, Tax Advisor

Since 2015

Disna Cooray

Tax Advisor

Disna is originally from Sri Lanka, where she worked as an account analyst for 5 years and as a clerk at the University of Colombo for 2 years. She migrated to Australia in 2008, completed her Diploma of Accounting in 2014, previously worked at Disability SA, and enjoys working closely with clients to help them achieve individual and business goals.

Diana Curcudel, Tax Advisor

Since 2017

Diana Curcudel

Tax Advisor

Diana migrated to Australia from Moldova in 2010. She completed a Diploma in Psychology in Moldova and worked with children at an orphanage before following her long-time interest in accounting in Australia. She enjoys true-story novels, family time, pets and cooking, and runs a small healthy food business with her husband.

Kim Adamson, ATO Liaison Officer

Since 2021

Kim Adamson

ATO Liaison Officer

Before joining Sharp as Tax, Kim worked in Human Resources and Workplace Health and Safety at Mobilong Prison. She grew up in Queensland and settled in South Australia in 2018. She has 2 boys and enjoys summer, the beach and the river.

Rebekah Coonan, Receptionist, Administration

Since 2023

Rebekah Coonan

Receptionist, Administration

Rebekah grew up in the state's South East before moving closer to the city 7 years ago. A busy mum of 4, she returned to the workforce after raising and home-schooling her children. She volunteers with her church's community pantry and kids' soccer teams, and enjoys reading, cross-stitching, soccer and family time.

Christina Jolly, ASIC Compliance, Tax Preparer

Since 2025

Christina Jolly

ASIC Compliance, Tax Preparer

Christina reentered the workforce at Sharp As Tax in 2014, worked there until late 2020, and recently rejoined the team. She enjoys helping clients and strives to provide the best assistance possible. Outside work she enjoys the kitchen and caring for animals.