How Can We Help You?


Are you a start-up business or an entrepreneurial venture? We offer a New Entrepreneurs Package that will meet all your compliance and business advisory needs.

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After your business journey has begun, where to next? We can provide you with advice and guidance on how to plan for growth.

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Large companies require governance to maintain healthy operations. Today, we service large businesses with their tax and management accounting needs, coupled with regular business advisory services as a standard package.

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We're Your Team

Semmens & Co. will be on the journey with you. Whether you are a start-up or a large company, we will become a valued member of your team. We can provide guidance and advice at every stage of your journey, from tax to management accounting, to ensure that you achieve your business goals. Click through to learn more about our team.

Team Profiles

We Do Things Differently

Located in Essendon, Semmens & Co is a family-owned accounting firm, servicing businesses and their families. We are experts in taxation and management accounting and, we aim to provide your business with advice and guidance when you need it. We are dedicated to servicing businesses, focusing on administration of corporate structures, as well as providing compliance services to Directors, their families and business partners. Our clients are family-owned businesses like ourselves, with multiple entities within the corporate structure, high net worth individuals and self-managed superannuation funds. We use technology to make our business more efficient and offer a fully paperless process - and we pride ourselves on fully automated, digital systems. We offer fixed fee monthly billing with direct debit and credit card payment options. We are members of Chartered Accountants Australia and New Zealand, the Tax Practitioners Board, National Tax and Accountants Association and Australian Institute of Project Management.

Our vision


Let's Meet and Greet

Call and introduce yourself. From there we will organise to meet with you, to gain an understanding of your business goals, individual needs and circumstances.


Let's Engage

We will provide an engagement pack, which clearly defines the services you need from us, as well as the annual cost and payment options.


Let's Do Business

We will be in contact regularly, proactively following up on all your business and individual taxation, compliance and reporting needs.


Let's Continue to Improve

Our standard package includes 2 free bi-annual business advisory meetings. The aim is to assess your progress regularly and provide you with actionable recommendations. We aim to work with you to maintain or grow your business over time.

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a Call Today

Thoughts From Our Principals

Mark Semmens

Mark is a Chartered Accountant with a wealth of experience in accounting and taxation. Mark is a Member of Chartered Accountants Australia and New Zealand, the Tax Practitioners Board and the National Tax and Accountants Association.

Mark's blogs
Daniela Semmens

Daniela Semmens is a Co-Director of Semmens & Co. and joined the company as General Manager in 2017. Daniela is an Affiliate Member of Chartered Accountants Australia and New Zealand and also a Member of the Australian Institute of Project Management.

Daniela's blogs

Contact Us Today

For any enquiries into our team or our services please contact Semmens & Co. via email at or call us on 03 8320 0320

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