RBA Accountants was founded in 2008 by Glen Butterworth and Dan Riggall, who left their respective roles at larger firms with a shared vision – to offer a more personalised, hands-on approach to accounting in the Northern Territory.
With years of experience behind them, the duo saw a clear opportunity to provide a higher level of service than what was typically available; one built on genuine relationships, not just numbers.
About us
To provide a personalised, hands-on approach to accounting for Northern Territory locals, empowering them to build stronger businesses and brighter futures.
To be the trusted and recognised local accounting firm of choice for construction, trade, agribusiness, and small to medium businesses across the Northern Territory.
We value long-standing client relationships built on trust, confidentiality, and loyalty. Many of our clients have been with us for years, a testament to our commitment and integrity.
As a boutique firm, we deliver the expertise of a larger practice with personalised service tailored to your needs. Our team is agile, responsive, and dedicated to helping your business succeed. You’ll always have direct access to a senior accountant and office manager for consistent, expert advice, and assistance.
While we specialise in family businesses, we also serve clients across various industries, including agribusiness, property development, construction, and professional practices. Whether you’re launching a new venture or seeking more attentive service, we’re here to help and would love to hear from you.
Dan Riggall
Dan didn’t initially plan to become an accountant, but a sharp-eyed university professor recognised his knack for numbers, prompting a change in direction that led him to his true calling. Since then, Dan has spent three decades helping clients navigate the complexities of tax and building profitable businesses with clarity, care, and practical advice.
After completing a Bachelor of Commerce at the University of Wollongong, Dan started his accounting career with Coopers & Lybrand (now PwC) in Darwin in 1994. He went on to spend time with Horwath NT, including three years in Katherine, and joined PKF Darwin in 2004, where he became a partner in 2007. He’s worked across both audit, tax, and advisory, gaining a well-rounded perspective that now underpins his work at RBA Chartered Accountants.
His expertise spans small to medium businesses, tax planning, capital gains tax, GST, payroll tax, income tax, and business structuring. He particularly enjoys working with clients in civil construction, trades, and agribusinesses, a passion rooted in his own hands-on experience as a carpenter and growing up in the country.
Dan’s clients value his honesty, advocacy, and deep commitment to their success. He’s known for asking the right questions and digging deep to help business owners make informed, confident business decisions, often forming client relationships that span decades.
He believes business is personal, and work should make a difference. For Dan, success is about helping people, building a strong team culture, and enriching clients’ lives through smart advice and consistent support.
Outside the office, Dan enjoys fishing, camping, and spending time outdoors with his family.
Qualifications and Memberships
Glen Butterworth
Born in Melbourne but raised in the Territory since the age of three, Glen is as local as they come. He was originally studying IT, but when the course was pulled from the university, he pivoted to accounting and has never looked back.
Glen began his career at Horwath Darwin, working his way up to Associate Director before becoming one of the founding partners of RBA Chartered Accountants. He holds a Bachelor of Business from Charles Darwin University, is a member of Chartered Accountants Australia & New Zealand and also holds a Diploma in Financial Planning.
With over 25 years in public practice, Glen is trusted by clients across the NT and beyond. His areas of expertise include property development, construction, primary production, SMSF, tax planning, CGT and small business structuring. He particularly enjoys working with entrepreneurs and risk-takers, helping them balance bold ideas with strong financial foundations.
Glen is known for his practical approach and the long-standing relationships he builds. Many clients have been with him for over 20 years. For Glen, it’s personal and he takes that responsibility seriously.
He founded RBA to create a workplace where both staff and clients feel valued, where relationships matter, consistency is key, and high standards are met every time. Whether it’s preparing financial statements, mapping out tax strategies, or mentoring his team, Glen loves getting things done and seeing client businesses grow from a sole trader to a thriving operation.
Outside of work, Glen is a family man with two boys who share his love for numbers. He’s a regular on the basketball court, loves catching up with family and friends in Melbourne, and never misses a chance to visit the MCG, especially when the Dees are playing.
Qualifications and Memberships
A true Territorian, Katie was born and raised in Darwin and grew up in a family-owned business. Katie was immersed in small business life from the start. While others were focused on sales or the tools, her father guided her toward the numbers which led her to complete a business degree majoring in accounting straight out of high school.
Katie has worked in Public Practice helping clients grow their own businesses for over 25 years. She’s not just a numbers person, she’s a problem solver and connector. As Practice Manager, she wears many hats and fills in wherever she’s needed, from overseeing client accounts to negotiating with the tax office on behalf of clients. She’s a strong advocator for clients, a sharp question-asker, and thrives on easing client stress with practical solutions.
Since 2008, Katie has brought strategic oversight to the team, always scanning for missing links and potential roadblocks before they arise. Not only is Katie a Chartered Accountant but she also understands what is means to be in business, get developments off the ground and work with financiers to fund projects. When she’s not working, you’ll find her cheering from the sidelines at her daughters’ sporting events.
Qualifications and Memberships
With over two decades of accounting experience across the Philippines and Australia, Mark brings a depth of knowledge and calm, considered guidance to every client conversation. Before moving to Darwin in 2011, Mark spent 10 years in large-scale organisations, from geothermal energy to insurance, gaining hands-on expertise in financial operations, analysis, and systems improvement.
Since joining RBA Chartered Accountants in 2016, Mark has become a trusted advisor to many Territory businesses. He specialises in tax and accounting for small to medium enterprises and is a go-to expert for Xero and MYOB. Whether it’s streamlining accounting workflows, training business owners, or helping clients understand their numbers, Mark makes it simple, practical, and as stress-free as possible.
Qualifications and Memberships
Ritesh is a qualified CPA with a global edge, blending expertise in Accounting, Business Law, and Trade Finance. With a Master of Commerce and Accounting, and CPA accreditation in Australia, he brings more than a decade of experience across complex group structures and Self-Managed Super Funds, taking in diverse sectors, from agriculture to stock markets.
Ritesh also manages over 35 Self-Managed Super Funds with precision and has deep knowledge of MYOB, Xero, Reckon, QuickBooks, and BGLSF360. On the weekends, Ritesh can often be found on Darwin’s cricket pitches, playing the game, he loves.
Qualifications and Memberships
Born in Country WA and raised in the city of Perth, Merredith came to the Northern Territory on holiday 29 years ago—and never left. With accounting in her DNA, thanks to her Dad, she’s been working in public practice since 1987 and has built a career based on relationships, real conversations, and honest advice.
Merredith joined RBA in 2009 and is our go-to Client Manager, first on the line when clients need help. She specialises in MYOB, having worked with it since the ’90s, and regularly trains business owners and bookkeepers on the system to feel confident and in control of their finances.
She thrives on variety, with experience across primary production, hospitality, legal, and medical sectors. Whether it’s buying, selling, restructuring, or sorting out the books, Merredith’s steady approach and deep sense of responsibility make her a trusted advisor. She loves yoga, walking with friends, laughing hard, and visiting family back in Perth.
Qualifications and Memberships
Michelle kicked off her accounting career in the Philippines before moving to Darwin in 2006, where she began working with Glen, first at Horwath, then here at RBA Chartered Accountants. She’s a Certified Practicing Accountant (Australia & Philippines), a Certified Internal Auditor (International), and holds a Certificate IV in Training and Assessment.
Michelle loves solving problems and helping clients reach their goals. Her work keeps her challenged and engaged, balancing the consistency of annual compliance, with the variety of unique client needs.
Her expertise covers everything from financial statements and tax returns for SMEs, to BAS lodgements, managed fund distributions, and mastering a range of accounting software (she’s a whiz with Microsoft Office).
Qualifications and Memberships
Originally from Castlemaine, Victoria, Donna set off on an Aussie road trip with her now-husband over two decades ago and never made it past Darwin. She’s proudly called the Territory home ever since.
With over 25 years in public practice and senior roles across Moore Australia, PKF, and 16 years with Deloitte, Donna is known for her attention to detail and she’s a self-confessed perfectionist (in the best way).
Donna’s career started at reception and grew through every level of accounting. That journey has shaped her love for mentoring, she’s always ready to guide the next generation of accountants.
She holds a Master of Business Administration with majors in Professional Accounting and International Business Law, is a Chartered Accountant, and brings a wealth of experience across industries. Donna loves the variety of public practice and takes pride in forming relationships with clients, helping them strengthen and grow their businesses.
When she’s not reviewing reports or mentoring team members, you’ll find her at outdoor bootcamps, socialising between squats, or keeping up with her busy teenagers.
Qualifications and Memberships
Tricia is the backbone of the administration team here at RBA Chartered Accountants and has excelled since starting with us in 2012. She is passionate about providing exceptional support and ensuring smooth daily functions within the office.
She filters work as it comes into the office to ensure our accountants have everything they need to get compliance work done. She provides accounts payable and payroll processing for various clients. She is the first port of call for ASIC, ATO, the smiling face at reception and the efficient manager of the phone traffic. Outside the office she is a staunch Adelaide Crows supporter.
