Australian doctors can earn income as a PAYG employee, sole trader (ABN), through a company, or via a partnership. Each structure carries different tax obligations, super rules, and borrowing implications. The right choice depends heavily on your career stage and how your practice is set up.
Key Takeaways
- PAYG is right for most interns, residents, and registrars: clean, verifiable, and well-treated by lenders
- Moving to sole trader or ABN means taking over your own tax instalments, GST, and super contributions
- A company structure makes sense at higher income levels but adds compliance costs that need to be weighed against savings
- Lenders treat PAYG, ABN, and company income differently: structure affects your borrowing capacity directly
- Transitioning between structures mid-career is common but creates real financial risks if not planned ahead
Quick Answer
Australian doctors can earn income as a PAYG employee, sole trader (ABN), through a company, or via a partnership. Each structure carries different tax obligations, super rules, and borrowing implications. The right choice depends heavily on your career stage and how your practice is set up.
The Four Main Income Structures for Doctors
Most Australian doctors will move through at least two or three of these structures across their careers. Understanding what each one means for your tax, super, and borrowing capacity is the first step to making informed decisions.
PAYG Employee This is the default for interns, residents, and registrars. Your employer withholds tax, pays super on your behalf, and you receive a group certificate at year end. Simple, clean, and exactly right for early career. Lenders love it because your income is easy to verify.
Sole Trader / ABN Contractor Common for locums and doctors doing ad hoc work outside their main role. You invoice for services using your ABN, collect GST if turnover exceeds $75,000, and pay tax on net profit. You are also responsible for your own super contributions. Banks treat this income differently: they typically want two years of tax returns to confirm it is stable.
Company Structure Established GPs and specialists often move income through a company (Pty Ltd), particularly where there is significant profit to retain at the 25% company tax rate. A company can also employ family members, hold assets, and separate personal liability from business risk. It adds complexity and compliance costs, but at higher income levels the tax savings usually outweigh those.
Partnership / Practice Structure Common in group GP practices. Each partner draws a share of practice profits, often with a mix of base drawings and profit distribution. Service entities (a separate trust or company that charges the practice for admin, facilities, or equipment) are frequently layered on top, particularly for specialist practices. This structure requires specialist accounting and careful setup to withstand ATO scrutiny.
How Your Structure Affects Tax, Super, and Borrowing
Tax As a PAYG employee, your marginal tax rate applies to every dollar. A sole trader is in the same boat. A company caps tax at 25% (base rate entity) on retained profits, which becomes useful once you are earning well above $180,000 and do not need all the cash personally right now. Trusts add another layer of flexibility by distributing income to lower-income beneficiaries, but the ATO has tightened rules here significantly.
See our tax guide for doctors and healthcare professionals for more detail on how these play out in practice.
Super PAYG employees have super paid by their employer at 11.5% (2024-25 rate). Sole traders, company directors, and partners need to fund their own super contributions. This is one of the most common gaps we see: doctors move to contracting or private practice, forget to set up a payment schedule, and lose years of concessional contributions.
Borrowing Capacity Lenders assess income differently depending on structure. PAYG income is straightforward. ABN or sole trader income requires two years of tax returns, and lenders typically average the two years or use the lower figure. Company income requires additional documentation, especially if you are leaving profit in the company rather than drawing a salary. Some lenders do not count retained company profit as income at all.
If you are a registrar thinking about your first property purchase, your PAYG status actually works in your favour. Read more in our registrar to consultant financial transition guide.
Moving Between Structures: What Actually Changes
The shift from PAYG registrar to private practice GP or specialist is where most financial mistakes happen. Take James, a GP who transitions from a hospital salary to a mixed billing practice with an ABN. His income looks similar on paper. But suddenly he is responsible for his own tax instalments, GST registration, super contributions, and possibly payroll tax if he takes on staff.
The cash flow shock is real. No more withholding tax means a bigger tax bill at year end if you have not set aside quarterly PAYG instalments. No employer super means an extra 11.5% you need to fund yourself to maintain the same retirement savings pace.
A company setup can smooth some of this out: paying yourself a salary from the company gives you predictable withholding and employer super contributions again. But getting the structure wrong from the start costs more to fix later.
Locum doctors face a specific version of this challenge: high income, variable months, no employer benefits. We cover the locum-specific planning questions in detail here: locum work in Australia: income planning.
Common Mistakes When Transitioning Structures
Forgetting PAYG instalments. Once you stop being a PAYG employee, the ATO will eventually put you on quarterly tax instalments, but not immediately. Doctors in their first year of contracting often get a large surprise tax bill.
Under-contributing to super. Moving to ABN or company means no automatic employer contributions. Many doctors realise three years later they have barely touched their super.
Setting up a company before the income justifies it. A company has real compliance costs: accountant fees, ASIC fees, separate bank accounts, payroll processing. For a doctor doing occasional locum shifts, a sole trader structure is often sufficient.
Not separating personal and business finances. Mixing personal spending with business accounts makes accounting harder and more expensive, and creates tax headaches down the track.
Choosing a structure based on what a colleague did. James and Sarah might look like they are in similar positions, but their asset situations, family structure, practice setup, and risk appetite are different. Structure advice needs to be specific.
Key Takeaways
- PAYG is right for most interns, residents, and registrars: clean, verifiable, and well-treated by lenders
- Moving to sole trader or ABN means taking over your own tax instalments, GST, and super contributions
- A company structure makes sense at higher income levels but adds compliance costs that need to be weighed against savings
- Lenders treat PAYG, ABN, and company income differently: structure affects your borrowing capacity directly
- Transitioning between structures mid-career is common but creates real financial risks if not planned ahead
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