Accountants in Onkaparinga, South Australia
The Onkaparinga council area in South Australia has 89 registered accountants across 21 suburbs. Choose a suburb below to find a accountant or accounting services near you.
Suburbs in Onkaparinga
Other areas in Onkaparinga
Smaller suburbs with one or two listed accountants.
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Automate your AP with PulsifyThe business landscape in Onkaparinga
Onkaparinga is home to 10,428 actively trading businesses (ABS, June 2025). 6,743 are non-employing sole traders and 3,685 employ staff. That works out to roughly one tax agent for every 117 businesses across the 89 tax agents listed here.
By sector, Onkaparinga has 2,760 in construction, 651 in manufacturing, 566 in transport & warehousing. These are the businesses that carry the most accounts payable volume: subcontractor invoices, supplier bills and progress claims that a tax agent or bookkeeping system has to code, match and reconcile every week.
Business counts: ABS Counts of Australian Businesses (CABEE), Regional Statistics by LGA 2025. Practitioner counts: Tax Practitioners Board public register.
What does a registered tax agent do?
In Australia, anyone who provides tax agent services for a fee (preparing or lodging income tax returns, giving tax advice, or dealing with the ATO on your behalf) must be registered as a tax agent with the Tax Practitioners Board. Most accountants in public practice hold tax agent registration. Registration means they meet qualification, experience and professional-conduct requirements, and carry professional indemnity insurance.
Where this data comes from
Every listing in this directory is sourced directly from the Tax Practitioners Board public register, the Australian Government register of registered tax agents and BAS agents. We publish it under the register's CC BY 4.0 licence. We do not add, edit or sell practitioner details.
This is a snapshot of 62,555 practitioners, current as at 1 July 2026. Registrations change daily, and the Tax Practitioners Board register is the authoritative source. Confirm any practitioner's registration on the TPB register before engaging them.
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