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Business Details
21 Years
experience
Trusted Accounting and Financial Services in Port Adelaide
Established in 2005 by Sam Mansfield, Opus Tax & Business Services has built a reputation for meticulous attention to detail, technical expertise, and exceptional client service. With over 11 years of prior experience in a chartered accounting partnership, Sam identified a need for high-quality, client-focused accounting solutions in Port Adelaide. The practice has since grown through a commitment to understanding client needs and delivering reliable, efficient services. Our team of accountants and financial advisors shares this vision, offering a comprehensive range of accounting, taxation, and financial planning services. We specialise in income tax, capital gains tax, GST, payroll tax, and superannuation management, alongside business advisory services for company establishment and financial projections. Opus Financial Services was launched to complement our accounting offerings, providing tailored financial planning, including retirement strategies, risk management, and Centrelink liaison services.

Our Certified Financial Planners bring decades of combined experience, ensuring clients receive expert advice aligned with their personal and business goals. We prioritise ongoing professional development to stay ahead of regulatory changes, enabling us to provide proactive, informed guidance. Our Centrelink liaison service, with nine years of proven success, simplifies complex entitlement processes for clients. By maintaining strong relationships with external professionals, we ensure clients receive holistic support for insurance, estate planning, and financing needs. Our focus remains on helping clients achieve their financial objectives through integrity, expertise, and a personalised approach.
Services
Accounting Services Taxation Advice Superannuation Management Financial Planning Centrelink Liaison
Details
  • Year established: 2005
Highlights and features
  • We offer comprehensive accounting and financial services under one roof
  • Our team includes Certified Financial Planners with decades of experience
  • We provide tailored Centrelink liaison services with nine years of expertise
  • We prioritise ongoing professional development to ensure regulatory compliance
  • We maintain partnerships with external professionals for holistic client support
Associations and certifications
  • Finplan Advice Pty Ltd
Services
Accounting Services
We provide end-to-end accounting solutions including financial reporting, business advisory, and compliance management. Our services cater to individuals, sole traders, companies, and trusts. We ensure accurate record-keeping and strategic financial guidance to support business growth.
Taxation Advice
Our team offers comprehensive tax services covering income tax, GST, payroll tax, and capital gains tax. We specialise in tax planning, business structure advice, and lodgement preparation. We help clients navigate complex tax regulations while optimising their financial position.
Superannuation Management
We assist with self-managed superannuation funds (SMSFs), contribution strategies, and retirement income planning. Our experts provide tailored advice to maximise retirement savings. We ensure compliance with regulatory requirements while optimising long-term financial security.
Financial Planning
Our Certified Financial Planners offer retirement strategies, risk management, and investment advice. We develop personalised plans to achieve financial goals, including insurance coverage and estate planning. We are accredited through Finplan Advice Pty Ltd to provide holistic financial solutions.
Centrelink Liaison
We manage Centrelink and Department of Veterans Affairs interactions on behalf of clients. Our service includes entitlement analysis, application completion, and ongoing correspondence. With nine years of experience, we simplify complex processes to ensure clients receive their correct benefits.
People
Sam Mansfield
Founder
Sam Mansfield established Opus Tax & Business Services in 2005 after 11 years in a chartered accounting partnership. He has grown the practice through a focus on technical excellence and client service. His leadership drives the team's commitment to delivering reliable accounting solutions.
Keiran McPhee
Certified Financial Planner
With 20 years' experience at AMP and BT, Keiran specialises in retirement planning and risk management. He holds a Graduate Diploma in Financial Planning and was a national adviser award finalist. His expertise ensures clients receive strategic financial advice aligned with their goals.
Robert Steventon
Certified Financial Planner
Robert has worked in financial services since 1988, providing technical support and client advice. He focuses on retirement strategies, investment planning, and risk management. His broad knowledge complements the team's approach to holistic financial solutions.
Questions
What accounting services do you offer?
We provide bookkeeping, financial reporting, tax compliance, business advisory, and SMSF management for individuals and businesses.
Do you specialise in small business accounting?
Yes, we work with sole traders, partnerships, and companies on tax planning, business structure, and financial management.
What financial planning services are available?
Our Certified Financial Planners offer retirement strategies, risk management, investment advice, and estate planning solutions.
How does your Centrelink liaison service work?
We handle Centrelink applications, correspondence, and updates to ensure clients receive correct entitlements for nine years.
Are you qualified to provide tax advice?
Our team includes chartered accountants and tax specialists with ongoing professional development in Australian tax law.
Reviews (1)
Cameron Talbot
Sep 28, 2020 Report
Been using the services of Opus for about 7 years now. absolutely outstanding knowledge and ability when it comes to accounting services. they know the ins and outs of anything tax and are always well upto date with the latest changes thus not letting you miss out on deductions or over claiming and leaving you liable to paying back money. The only wizards you need