Tax Strategies for Medical Practitioners: The Complete Guide for Doctors, GPs & Allied Health Professionals in Australia

Medical practitioners earn among the highest incomes in Australia — which means tax planning isn't optional, it's essential. A GP earning $300,000 or a specialist billing $500,000+ will pay radically different amounts of tax depending entirely on how their affairs are structured. The difference between a well-planned and an unplanned tax position over a 20-year career can easily exceed half a million dollars.

At the same time, the medical industry faces some of the most complex tax rules in Australia — in particular the Personal Services Income (PSI) legislation, which severely limits the tax strategies available to solo practitioners. Understanding where you stand with PSI is the critical first step before any other planning.

Part 1: Personal Services Income (PSI) — The Foundation of Medical Tax Planning

PSI legislation is the single most important concept for any medical practitioner to understand. If your income is classified as PSI and you're operating through a company or trust, the ATO can effectively ignore that structure and tax the income as if it were earned personally at your marginal rate.

Income is classified as Personal Services Income if more than 50% of the income is a reward for your personal skills, knowledge, or effort — rather than from a business with genuine business characteristics. For most solo practitioners (a GP doing patient consultations, a physiotherapist treating patients), the income is clearly PSI.

The Four Tests

If your income is PSI, you can still escape the PSI rules and structure your income through an entity — but only if you pass the Results Test or at least two of the three Business Tests:

Part 2: Income Splitting — What's Possible and What's Not

Income splitting (diverting part of your income to a spouse or family member in a lower tax bracket) is one of the most sought-after strategies for high-earning practitioners. Here's the reality:

When Income Splitting Is Possible

• Your income is NOT PSI — you've passed the business tests and operate through a genuine business entity. The entity can then distribute income to family members on lower tax rates.
• Your spouse provides genuine, valued services — if your spouse performs real administrative or clinical support work for your practice, paying them an arm's-length salary is entirely legitimate and deductible.
• Service trust arrangements — a carefully structured service trust can earn income from your main practice entity by genuinely providing administrative, management, or support services at arm's-length rates.
• Super contributions to spouse — contributing to your spouse's superannuation (using the spouse contributions tax offset, or through their employer contributions) is a legitimate income-splitting strategy over the long term.

When Income Splitting Is NOT Possible

• Your income is PSI — if you're a solo practitioner and don't pass the business tests, any attempt to route income through a trust or company will be unwound by the PSI rules
• Paying a non-working spouse a "salary" — paying your spouse for work they don't actually perform attracts ATO attention and potential penalties
• Inflating service fees — if your practice pays a related service trust well above market rates for administrative services, the ATO will deem the excess as non-arm's-length

Part 3: Optimal Practice Structure

The right structure for a medical practitioner depends on your income level, whether PSI rules apply, your family situation, and long-term goals. Here's a comparison:

Part 4: Superannuation — The Most Powerful Tool for Medical Practitioners

High-income practitioners often focus obsessively on income splitting strategies while underutilising the most straightforward and powerful tool available: maximising superannuation contributions.

A specialist earning $500,000 who salary sacrifices the full concessional cap of $30,000 saves approximately $9,600 per year compared to receiving that money as salary (at the 47% rate minus the 30% Division 293 rate). Over a 20-year career, with investment earnings, that compounds to a very significant difference.

Key strategies for medical practitioners:

• Max concessional contributions — salary sacrifice or personal deductible contributions to reach the $30,000 cap
• Use carry-forward provisions — if you had low contributions in training years (common for doctors), you may have accumulated substantial unused cap space
• Establish an SMSF — allows you to invest in commercial premises (e.g., your own clinic) within super, creating both an asset protection and rent-deduction benefit
• Equalise with spouse — if your spouse has significantly less super, contribute to equalise balances for maximum tax-free retirement income
• Downsizer contributions — if you're 55+ and plan to sell your home, up to $300,000 each ($600,000 per couple) can go into super tax-free

Part 5: Work-Related Deductions for Medical Practitioners

Beyond structural strategies, medical practitioners have a wide range of genuinely claimable deductions:

Part 6: GST on Medical Services

Medical services provided by a registered health professional are generally GST-free under the Health Goods and Services exemption (Division 38-B of the GST Act). This means:

• You do not charge GST on patient consultations, procedures, or treatments
• You cannot claim GST credits on purchases made for GST-free services
• For mixed-supply practices (e.g., cosmetic procedures that are not medically necessary, selling supplements, providing non-health services), GST may apply to the non-exempt portion
• Allied health professionals need to carefully assess which of their services are GST-free vs taxable

A physiotherapist who provides treatment sessions (GST-free) but also sells branded supplements at reception faces a mixed-supply issue requiring careful GST apportionment. Getting this wrong leads to BAS errors and ATO interest.

Part 7: CGT on Practice Sales — Small Business Concessions

When a medical practitioner sells their practice, the goodwill component is typically the largest element of the sale price — and it's subject to Capital Gains Tax. However, if you've operated the practice through an appropriate structure, you may qualify for the Small Business CGT Concessions:

• 15-year Exemption — if you've owned the asset for at least 15 years and are 55+, the entire capital gain may be exempt
• 50% Active Asset Reduction — a 50% reduction on the taxable gain for business assets
• Retirement Exemption — up to $500,000 lifetime limit can be excluded if contributed to super or kept for retirement
• Rollover — deferring the gain by rolling proceeds into a replacement asset

Eligibility requires meeting the basic conditions — including that you are a small business entity (turnover under $10 million) or your net assets don't exceed $6 million. Planning a practice sale well in advance — ideally 12–24 months before — dramatically increases the concessions available.

Part 8: Locum Income — Special Considerations

Many practitioners work as locums alongside their main practice role. Locum income introduces specific complexity:

• Locum income from a single locum agency or hospital is often treated as employment — PSI rules may attribute this income back personally regardless of structure
• Working across multiple hospitals/clinics as a genuine independent contractor may satisfy the Unrelated Clients Test, allowing a company structure
• Locums who use the same ABN and entity for both locum and private practice need to assess whether PSI rules apply to the total income mix
• Locum agencies typically don't withhold PAYG, so tax planning and quarterly PAYG instalments are essential to avoid a large tax debt at lodgement time

Part 9: Negative Gearing for Doctors — Property as a Tax Strategy

High-income practitioners are among the most frequent users of negative gearing — borrowing to invest in property where rental income is less than holding costs. The net loss offsets their taxable income at the highest marginal rate.

At a 47% marginal rate, a $20,000 negatively geared loss reduces tax by approximately $9,400. However, negative gearing should never be a primary driver of an investment decision — the underlying asset must also have genuine long-term growth prospects. We strongly recommend modelling negative gearing in the context of your overall income, borrowing capacity, and retirement timeline.

Part 10: Common Mistakes Medical Practitioners Make