Few tax issues have caused Australian medical practices more anxiety than payroll tax on contractor GPs, and the position now differs sharply depending on which state you practise in. The core problem is the same everywhere: state “relevant contract” rules can treat payments a practice makes to contractor doctors as taxable wages, even where the doctor runs their own business, following a series of tribunal decisions. But the responses have diverged, from Queensland’s full legislated exemption for contractor GPs to bulk-billing-based exemptions elsewhere, various amnesties for past periods, and Western Australia’s separate non-harmonised regime. A multi-doctor practice with $2.5 million of contractor GP payments sitting on top of $900,000 of staff wages can face a six-figure payroll tax bill if those contractor payments are caught and no exemption applies. This guide sets out the state-by-state position as at mid-2026 and what practices need to do. It is general information only. Payroll tax on medical contractors is complex, state-specific and still moving, so confirm your practice’s position with an adviser who tracks the rulings in your state.
Published: July 2026
Payroll tax is a state tax on taxable wages above a threshold. Each state’s Act contains “relevant contract” provisions that can deem payments under certain contracts to be wages, even when the worker is engaged as a contractor rather than an employee. For medical practices, the concern is the common model where a practice provides rooms, administration and billing to doctors who operate as independent contractors, collecting patient and Medicare fees on their behalf and remitting the balance after a service fee.
A run of state revenue rulings and tribunal decisions took the position that, in many such arrangements, the payments flowing to the contractor doctors could be caught as “wages” for payroll tax. That created potentially large historical and ongoing liabilities for practices that had never treated these payments as wages. The issue is not limited to GPs. Allied health and specialist practices using similar service-entity models can face the same relevant-contract analysis, even where GP-specific exemptions do not apply.
For general payroll tax mechanics, thresholds and grouping, see payroll tax in Australia and the state-by-state payroll tax thresholds and rates guide. Use the payroll tax threshold calculator to sanity-check whether aggregate wages (including any deemed contractor wages) put the practice over the line.
Under a typical service model, the practice entity provides facilities and admin. The doctor bills through the practice or under arrangements where fees flow through practice systems. After a service fee, the balance is paid to the doctor. From a commercial perspective, the doctor may be running a genuine independent practice. From a payroll tax perspective, the payments can still be relevant-contract wages unless an exemption or a different factual arrangement (such as patients paying the doctor directly) takes them out of the net.
The rulings were originally more aligned across the harmonised states, then each state went its own way with amnesties, exemptions and amendments, which is why the map is now patchy. Underneath it all, the arrangement between practice and doctor still matters: a genuine, well-structured independent-contractor relationship, with the doctor billing patients directly where possible, is treated differently from one where the practice effectively pays the doctor as if they were on a wage roster under another name.
Queensland has gone furthest. Following amendments to its Payroll Tax Act, Queensland provides a full exemption for wages paid by GP practices to contracted GPs, and its ruling clarifies that patient fees paid directly to practitioners are not liable. This goes beyond the relief offered elsewhere, and Queensland also ran an amnesty covering past periods. The result is the most practice-friendly position in the country for contractor GPs. Queensland’s general payroll tax threshold sits around $1.3 million of Australian taxable wages, with rates around 4.75% (and a higher rate above a large-wage band), so once contractor payments are exempt, many practices fall back under the ordinary staff-wage analysis.
Victoria, New South Wales and South Australia have legislated narrower, bulk-billing-based exemptions rather than a blanket contractor exemption. Broadly, from 1 July 2024 or 1 July 2025 (depending on the state), wages for GP services that are fully funded (bulk billed) are exempt, with the exempt proportion tied to the practice’s bulk-billing rate, so a practice that bulk bills more shelters more of its GP wages. These states also provided relief or amnesty for past periods (for example, Victoria’s ex gratia relief for periods up to 30 June 2024, and South Australia’s amnesty for periods up to 30 June 2024 for practices that registered). Practices in these states generally must report their GP wages and claim the bulk-billing exemption through the annual reconciliation.
New South Wales payroll tax still uses a $1.2 million annual threshold and a 5.45% rate on the excess in recent years. That means any contractor GP payments that remain taxable after the bulk-billing exemption can push a practice over the line quickly.
A Sydney GP practice has $800,000 of employee wages (nurses, reception, practice manager) and $1.8 million of contractor GP payments. Without any GP exemption, taxable wages could be treated as about $2.6 million. Excess over a $1.2 million threshold is $1.4 million. At 5.45%, that is roughly $76,300 of annual payroll tax before grouping or other adjustments.
If the bulk-billing exemption shelters 60% of the GP wages, taxable GP wages fall to $720,000. Total taxable wages become $800,000 + $720,000 = $1.52 million. Excess over threshold is $320,000, and payroll tax is about $17,440. The bulk-billing rate is not a soft statistic for the practice manager’s dashboard. It is a dollar input into the annual reconciliation. Practices that do not track bulk-billing share cannot claim the exemption cleanly.
The ACT offered an amnesty for practices bulk billing a threshold share of patients, and subsequently relaxed the qualifying target, easing access to relief. Practices in the ACT should confirm current registration and ongoing conditions with ACT Revenue.
Western Australia sits outside the harmonised approach. The WA Government has indicated that its threshold means most GPs fall below the payroll tax line and that it does not intend to change its provisions in the same way as the eastern states, but practices must still ensure their contractor arrangements are genuine, because WA’s rules differ from the harmonised states and cannot be read across from them.
Tasmania and the Northern Territory have not issued GP-specific relief of the same breadth, though both remain within the broader payroll tax framework (Tasmania within the harmonisation agreement, the NT with its own threshold settings). Future change is possible. Practices should not assume silence means permanent safety.
The practical takeaway: the exemption you rely on in one state may not exist in the next, so a practice operating across state lines is managing several different regimes at once, and a practice relying on a bulk-billing exemption must actually track and evidence its bulk-billing proportion to claim it.
Regardless of state, four actions matter.
A Victorian practice with $1.4 million of annual contractor GP payments for three prior years never registered for the available relief pathway and never treated the payments as wages. If those payments are later assessed as taxable wages, three years of tax at roughly 5% on $1.4 million each year is about $210,000, before interest and penalties. Voluntary engagement and professional support usually land better than silent discovery, but the only clean position is knowing which periods were covered by relief and which were not.
Medical contractor payroll tax is not only a legal question. It is a bookkeeping and reporting question. Practices need clear coding of contractor GP payments versus employee wages, bulk-billing metrics that finance can reconcile, lodgement-ready annual reconciliations, and service agreements that match how money actually flows. That is why bookkeeping for medical practices and embedded finance services matter here: the exemption is only as good as the records that support it.
Superannuation, GST and the doctors’ own entities sit beside the payroll tax question. A change made for payroll tax reasons (for example, shifting to direct patient billing) can have consequences for GST administration, cashflow timing and the doctors’ personal structures. Coordinated advice beats a single-tax fix that creates three new problems.
Do medical practices pay payroll tax on contractor GPs?
It depends on the state. Queensland provides a full exemption for contractor GP wages in defined circumstances; Victoria, NSW and SA exempt GP wages tied to bulk-billed (fully funded) services in proportion to the practice’s bulk-billing rate; WA sits outside the harmonised approach; and other jurisdictions may have no GP-specific ruling. The relevant-contract rules can otherwise treat contractor payments as taxable wages.
Why did contractor GP payments become a payroll tax issue?
Because state “relevant contract” provisions can deem payments under certain contracts to be wages, and a run of rulings and tribunal decisions took the view that the common model, where a practice bills on behalf of contractor doctors and remits the balance, could be caught, creating historical and ongoing liabilities.
What is Queensland’s position?
Queensland legislated a full exemption for wages paid by GP practices to contracted GPs, going beyond other states, and clarified that patient fees paid directly to practitioners are not liable. It also ran an amnesty for past periods. It is the most practice-friendly position for contractor GPs.
What is the bulk-billing exemption in Victoria, NSW and SA?
An exemption for GP wages relating to fully funded (bulk billed) services, with the exempt proportion tied to the practice’s bulk-billing rate, so a higher bulk-billing share shelters more GP wages. It generally applies from 1 July 2024 or 1 July 2025 depending on the state and must be claimed through the annual reconciliation with evidence.
Is Western Australia different?
Yes. WA is outside the harmonised approach and has indicated its threshold settings mean many GP arrangements fall below the payroll tax line, with a different legislative path from the eastern states. WA’s rules still require genuine contractor analysis and cannot simply be read across from other states’ exemptions.
How can a practice reduce its payroll tax exposure?
By ensuring service agreements reflect a genuine independent-contractor relationship, arranging for doctors to bill patients directly where possible (direct patient payments generally fall outside the net), claiming the applicable state exemption correctly, tracking the bulk-billing proportion where that drives the exemption, and checking grouping across related entities.
Can state revenue offices review past periods?
Yes. Where amnesties applied to historical periods, a practice’s position depends on whether it registered and met conditions, and revenue offices can review historical liabilities. A practice unsure of its past exposure should assess it deliberately rather than assume it has passed.
Does this only affect GPs?
GP-specific exemptions are the headline story, but relevant-contract rules can affect other medical and allied health service models. If the practice collects fees and remits to practitioners under service agreements, the arrangement should be reviewed even where a GP exemption does not apply.
How does grouping change the answer?
Related entities share one payroll tax threshold. A network of clinics or a service entity plus trading entities can be one group for payroll tax even if each entity looks sub-threshold alone. Map related entities before concluding you are safely under.
Is this tax advice?
No. Medical contractor payroll tax is complex, differs by state and continues to change. This is general information only. The specific position for your practice should be confirmed with an adviser who tracks the rulings and legislation in your state.
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We review and check this guide periodically. At the time of writing (July 2026), all information was current. Scale Suite is a registered BAS Agent, not a licensed tax advisor or financial advisor. This content is general information only and does not constitute professional tax, financial, or legal advice. Some details may change over time.
Scale Suite is a Sydney-based provider of outsourced finance and HR services for Australian SMEs. We deliver bookkeeping, financial reporting, payroll processing, fractional CFO support, recruitment, employee onboarding, people and culture support, and fractional HR oversight, all as a fully embedded team that works inside your business.
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