Meet The Partners…


Originally from Sydney, Peter started his business in 1985. Prior to this Peter was the Group CFO and Company Secretary for the international shipping group Wilh Wilhemsen. In 1988, Peter relocated to Toowoomba and expanded the client base in the Darling Downs.

As an accountant for over 38 years, Peter has been the driving force behind the business as it has continued to develop and adapt to clients needs. He places a high value on having a great team culture. With a Bachelor of Arts (Economics and History) and a Master of Commerce (Accounting), Peter is a Certified Practising Accountant and Registered Tax Agent. Peter is a Gazelles Internationally trained coach. Member of AICD. Peter also serves on a business-mentoring panel for Queensland State Development.

Peter is married to Vivienne and has seven children and three and half grandchildren. Peter loves to ride his mountain bike on the dirt tracks north of Toowoomba. He and Vivienne love going to West End and enjoying riding around the river, the cafes, plays at QPAC and a visit to Bent Books. Peter is an avid reader and a cricket tragic.


Peter Ambrosiussen


Samuel (Sam) Wright

Sam is an accountant and focuses on both compliance and Business Edge strategic work. He has been a valuable member of the Ambrosiussen team since May 2007. Sam has worked his way from completing work experience at Ambrosiussen Accountants & Advisors, to now proudly being a junior partner. Working at Ambrosiussen Accountants has provided him with a very practical view of his chosen career as an Accountant.

Sam has completed the CPA program, having already completed a dual Bachelor Degree of Business and Commerce, majoring in Accounting, Finance, and Human Resource Management and graduating with distinction. At present, he is part way through a Masters of Business Administration, with a bucket list goal of completing a PhD in the field of small business. Sam is committed to the strengthening and development of small business by improving the lifestyle of clients, not just the bottom line.

Sam enjoys networking immensely and volunteering his time in community organisations like the Toowoomba Chamber of Commerce, Institute of Managers & Leaders, and at the Christmas Wonderland Lights for Toowoomba West Lions Club. On a personal level, he enjoys spending time with his wife and two children, and supporting the mighty Brisbane Broncos.



Emma joined the team in June 2014 and has a total of over nine years experience working in public accounting firms.

She has completed her Bachelor of Commerce and CPA studies. Emma assists clients with their tax compliance and planning is currently working on a part-time basis to spend time at home with her young daughter.

She particularly enjoys her client interactions and being able to help make business owner’s lives easier.

Outside of work Emma spends her time with her husband, two dogs, extended family but mainly chasing after her toddler.


Emma Wieden


Tania Collie



Tania joined the team at Ambrosiussen Accountants in March of 2016. She completed her Bachelor of Commerce degree majoring in Accounting and Finance at USQ Toowoomba. Following completion of her studies she returned home to Roma to work in a public accounting firm for 7 years. From there she went onto running a family earthmoving business in Condamine. In 2015 she decided to move to Toowoomba for her children’s schooling and go back into accounting where her passion is. Tania is currently also completing her CPA.

When she is not working she is spending time with her four children and husband. If there is ever a spare moment she enjoys gardening.



Tom joined the team in July 2019 as a Junior Accountant. He is currently studying his Bachelor of Business and Commerce majoring in Accounting.

Before moving to Ambrosiussen Tom spent 4 years in the finance sector for the construction industry.

Tom is an avid sports fan and in his spare time enjoys spending time with his family and friends.

Junior Accountant

Thomas Holmes

Administration Professional

Jen Morris




Jen joined the Ambrosiussen Team in November 2015 as part of the Administration Team.

She completed her Cert IV in Business Administration/Finance in December 2016. Jen is originally from Canada and moved to Australia in 2012 with her husband Chad, and her two sons Ryden and Damon.



Claudia joined Ambrosiussen in August 2019 as part of the Administration Team. Claudia brings great energy to the team and is quickly becoming a great asset to the firm.

Claudia graduated in 2018 and in her spare time enjoys spending the majority of her time outdoors whether it be attending a rodea or spending time with her family and friends.

Administrative Assistant

Claudia Maiore

Intermediate Accountant

Greg Riehl


Greg joined the Ambrosiussen team in February 2020 as an Intermediate Accountant. He is currently studying the final year of his degree in Business & Commerce with a dual major in Accounting and Law. Greg has brought to the Ambrossiussen team a fresh approach to helping local businesses, accompanied by a passion for people.

Before moving to Ambrosiussen The Business Accountants Greg spent 3 years at a local boutique accounting firm, before accounting Greg worked as a qualified tradesman for several years.

Greg is passionate about connecting and engaging with his local Toowoomba community, he invests time into local men’s groups, networking and community events. On a personal level, Greg enjoys spending time with his wife and dog, while rebuilding his 1963 XL Ford Falcon.  


Jim’s Jerky

Terry Fowler Mechanical

GC Event Hire

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