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If you think youre paying too much tax and would like a long-term relationship with a trusted accountant then our accounting practice is ideal for you. We can proactively provide you with proven strategies for both tax minimisation and increased after tax cash flow. OBrien & Co service clients Australia wide from Parafield Airport; we not only prepare financials and tax returns but also provide strategic tax advice to professionals, executives, business owners, medical professionals, UK expats and investors all around Australia as well as providing services to non-residents holding various Australian Investments. For more details, contact us .

O'Brien & Co Questions

The O'Brien & Co annual revenue was $4 million in 2026.

O'Brien & Co is based in Parafield, South Australia.

The NAICS codes for O'Brien & Co are [541, 54, 5412, 54121].

The SIC codes for O'Brien & Co are [87, 872].

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