Tax Planning for Doctors: Strategies to Manage Your Tax Effectively

Most doctors do their tax planning in the last week of June, if they do it at all. By then, the financial year is already locked in. Real tax planning for doctors happens across the year, not in a scramble before 30 June. If you have not read the basics yet, our tax guide for doctors covers PAYG, deductions and Medicare levy. It starts from the ground up. This guide goes further. It tackles the strategies that matter once your income has grown and stabilised.

Direct answer: Tax planning for doctors means structuring income correctly, timing income and expenses deliberately, and managing superannuation contributions before thresholds like Division 293 catch you by surprise. It works best as an ongoing process throughout the financial year, not a single decision made at tax time.

Income structuring: PAYG vs company or trust

Structuring your income through a company or trust only helps if the structure reflects how you actually earn money. After all, the ATO's personal services income (PSI) rules exist for a reason. Consequently, they stop practitioners from splitting income through a structure. That matters when the income is really a reward for their own skill and effort.

In December 2025, the ATO released PCG 2025/5. This compliance guideline sharpens its focus on exactly this issue for medical and allied health professionals. It clarifies an important distinction. Passing a personal services business (PSB) test does help. For example, the unrelated clients test exempts you from the specific PSI attribution rules.

However, it does not protect you from Part IVA. That is the general anti-avoidance provision. The ATO uses it when a structure's main purpose looks like reducing tax, rather than running a genuine business.

In practice, this means a structure only holds up if it reflects a real business. Specifically, multiple unrelated referral sources support a genuine structure. So does owning your own equipment and holding commercial service agreements. A company set up purely to reduce your marginal tax rate is a different story, though. If the income still depends entirely on your personal skill, it is exactly the arrangement the ATO now watches more closely.

Planning for multiple income streams before the year ends

Doctors juggling hospital PAYG, private billing and locum shifts often only see the full picture at tax time. By then, unfortunately, it is too late to do anything useful with it. Forecasting your combined income partway through the year changes that. It lets you adjust quarterly PAYG instalments, plan super contributions, and avoid an unpleasant surprise in October.

Consider a specialist who picks up extra locum shifts mid-year. They might tip into a higher tax bracket without noticing. Reviewing your income position at the end of each quarter catches this early. A once-a-year review does not. That quarterly habit could mean adjusting instalments or timing a large expense. It could also mean bringing forward a super contribution before the cap resets.

Timing income and expenses

Small, deliberate timing decisions can shift when you pay tax. However, they do not always change how much you ultimately owe. Say you are close to a higher tax bracket this year, but expect lower income next year. For instance, bringing forward a deductible expense into the higher-income year usually makes more sense than waiting. CPD fees and equipment purchases are common examples.

The same logic works in reverse for income. For example, consider a specialist finishing a private billing engagement in June. They might reasonably issue the invoice in early July instead. This only works, though, if the timing reflects a genuine business decision. An artificial delay designed purely to shift tax will not hold up. The ATO looks at substance here, not just the date on the invoice.

Superannuation strategy as your income grows

Superannuation is one of the few areas where doctors can genuinely reduce their tax bill through active planning. Ultimately, that beats simply recording what already happened after the fact. The concessional (before-tax) contributions cap sits at $30,000 for the 2025-26 income year. It covers employer contributions, salary sacrifice and personal deductible contributions combined.

Was your total super balance under $500,000 at the end of the previous financial year? If so, you have another option. You can carry forward unused concessional cap space from the last 5 years. This is particularly useful for doctors who took time off for study or parental leave. Similarly, it also helps those coming out of lower-earning training years who now have higher income to shelter.

Division 293 tax becomes the bigger issue as income rises. It adds an extra 15% tax on concessional contributions. This applies once your income plus those contributions exceeds $250,000. Many specialists cross that threshold once they combine hospital and private billing income. Division 293 does not mean you should stop contributing to super, though. It simply means the contribution needs planning. Ideally, that planning happens before 30 June, not as a surprise assessment months later.

Private practice tax planning throughout the financial year

Once private billing becomes a meaningful part of your income, tax planning needs to change shape. Specifically, it should move from an annual event to a quarterly habit instead. This includes reviewing GST registration once turnover approaches $75,000. It also means keeping service trust or company fee arrangements properly documented.

Checking that quarterly PAYG instalments still reflect your actual income matters too.

Service trust arrangements need documentation that matches the fees actually charged. A template signed once and forgotten will not do. An outdated service agreement, one nobody has reviewed in years, is one of the more common issues the ATO raises.

That holds true regardless of whether the underlying numbers sit within its indicative benchmarks. Reviewing the structure annually, alongside your tax return, closes this gap before it becomes a problem.

Common mistakes in tax planning

The most common mistake is treating tax planning as a once-a-year event. Indeed, by the time June arrives, most of the year's decisions are already locked in.

Structuring income through a company or trust without a genuine business behind it is another frequent issue. This matters even more now, since PCG 2025/5 has sharpened ATO scrutiny in this exact area. Doctors also commonly under-plan for Division 293. They treat it as an unexpected bill, rather than a known threshold they could plan around months in advance.

Finally, many doctors leave super contributions until the last week of June. That timing misses the chance to use carry-forward concessional cap space. It also misses the chance to spread contributions more effectively across the year.

When planning gets specific to your situation

General strategies only go so far once your income comes from more than one source. Likewise, the same applies once a company or trust enters the picture. A specialist accountant who works with doctors regularly can model your actual combined income. They can also tell you whether your structure would hold up under PCG 2025/5. From there, they can time your super contributions against your real numbers, rather than a rule of thumb. You can start that conversation on the accountants for doctors page.

Information current as of August 2026. Tax rates, thresholds and ATO compliance guidance are subject to change, and strategies suited to your situation depend on individual circumstances. This is general information, not personal financial or tax advice.