Medical and healthcare practices present some of the most technically demanding bookkeeping work in Australia. The GST treatment alone — where a single practice can have GST-free, taxable, and input-taxed supplies running simultaneously — is enough to trip up bookkeepers who are accustomed to simpler business structures. Add contractor doctors, Medicare billing arrangements, PAYG for locums, and practice management software that doesn't always speak clearly to accounting systems, and it becomes clear why this sector warrants specialist attention.
This guide covers the key areas that make healthcare bookkeeping different, and the practical steps for handling them accurately.
GST-free vs taxable supplies: getting the split right
The foundational challenge is GST classification. Under Australian GST law, most medical services are GST-free under Subdivision 38-B of the GST Act — including:
- Services provided by registered medical practitioners (GPs, specialists)
- Nursing, midwifery, and allied health services (physiotherapy, psychology, occupational therapy, podiatry, etc.)
- Dental services
- Optometry services
However, not everything in a healthcare practice is GST-free. Taxable supplies in a medical setting commonly include:
- Cosmetic procedures not medically necessary (e.g., Botox for aesthetic purposes, cosmetic surgery)
- Sale of health products over the counter (vitamins, bandages, pharmaceutical products not on the PBS)
- Practice management software licences billed to doctors
- Room rental to third parties
- Some allied health services not provided by registered practitioners (e.g., certain wellness or nutrition services)
The practical implication: a GP practice with a retail pharmacy section, a cosmetic clinic, and a standard general practice may have three different GST treatments across its revenue streams. These must be separated in the Chart of Accounts and coded correctly to every transaction. A blended approach — lumping all revenue into one account and applying a GST apportionment at BAS time — creates errors and fails to give the tax agent or practice manager the visibility they need.
Medicare bulk billing and direct billing
Bulk billing (where the practice assigns the Medicare benefit directly to Medicare and charges the patient nothing or only the gap) creates a specific bookkeeping treatment:
- The income recorded is the Medicare benefit received, not a higher fee
- The patient pays nothing (or only a disclosed gap fee)
- The Medicare receipt is GST-free income
- Code: FRE (GST-free)
Private billing (where the patient is billed the full fee and then claims Medicare reimbursement themselves) is treated differently:
- The full fee charged to the patient is income, GST-free
- The Medicare reimbursement is received by the patient, not the practice
- The practice receives the patient's payment (full fee or gap)
For practices using HICAPS or Tyro for private health fund claiming, the settlement amounts often net the patient's fund claim against the out-of-pocket — meaning the bank deposit is the gap only, not the gross fee. Bookkeepers must reconcile the gross fee from the practice management system against the net bank deposits to ensure income is not understated.
Contractor vs employee doctors: getting the structure right
The most legally significant distinction in medical practice bookkeeping is whether a doctor is an employee or an independent contractor. The ATO has specific guidance on this, and the consequences of misclassification include unpaid PAYG withholding, unpaid superannuation, and potential STP penalties.
Employed doctors (including salaried GPs and registrars):
- PAYG withholding applies to all wages and salary
- Superannuation guarantee applies (currently 11.5% in 2025–26)
- STP reporting required
- Code wages to the relevant payroll expense account
Contractor doctors (who genuinely operate their own medical practice and are hired by the practice for sessions or rooms):
- Generally paid a share of billings or a session fee
- No PAYG withholding if the contractor has quoted their own ABN and the arrangement is genuinely contractual
- TPAR (Taxable Payments Annual Report) may apply — medical practices are not currently a mandatory TPAR industry, but check ATO updates annually
- If the contractor is deemed to be an employee under the contractor rules (no ABN, no commercial risk, no other clients), PAYG withholding must be applied
Locum doctors are a particular area of risk. Many locums work through their own company or trust, supply an ABN, and receive payment without withholding. However, if a locum is engaged directly without a company structure and does not quote an ABN, the practice must withhold tax at the top marginal rate under the no-ABN withholding rules.
Practice management software integration
Most healthcare practices use dedicated practice management software — Best Practice, Medical Director (Pracsoft), Genie, Nookal, or similar. These systems handle appointment scheduling, billing, Medicare claiming, and clinical records, but their integration with accounting systems is rarely seamless.
Common integration pain points:
- Revenue timing: Practice management software records income on the date of service; accounting systems may record on receipt. Reconcile monthly to ensure no timing gaps.
- Fund receipts vs gross billing: Private health fund and Medicare payments are received days or weeks after service. The receivables ledger must track outstanding claims accurately.
- Write-offs and adjustments: When a Medicare claim is rejected or a fee is reduced, the write-off must be coded correctly — not left as an unreconciled receivable.
- GST on mixed invoices: Some practice management systems do not flag GST treatment per line — the bookkeeper must apply the correct codes during import.
ReconLink's reconciliation is particularly useful here — once the practice management system exports daily or weekly settlement summaries, the imported bank transactions can be matched against those summaries systematically, and any discrepancies surface immediately rather than accumulating over a quarter.
PAYG for practice staff and locums
Beyond doctor arrangements, healthcare practices typically employ a mix of practice managers, nurses, receptionists, and administrative staff. Standard PAYG withholding rules apply to these employees, with one nuance: practice nurses who are also registered health practitioners may be engaged as contractors in some models.
Key checklist for healthcare practice PAYG:
- All PAYG withheld amounts lodged through STP
- Superannuation guarantee paid on time (quarterly at minimum, though monthly is best practice)
- Termination payments (particularly for long-serving practice nurses or managers) handled via the ATO's ETP withholding schedule
- Any salary sacrifice arrangements (common in this sector, particularly for salary-packaging of superannuation) documented and reported correctly
Practical advice for bookkeepers taking on a healthcare client
- Get the client's GST mix in writing — ask them to list every revenue stream and have the tax agent confirm the GST treatment before you begin coding
- Set up separate income accounts for GST-free services, taxable services, and any input-taxed income
- Map the practice management software to the accounting system — build a documented mapping and check it monthly
- Establish a Medicare/health fund receivables reconciliation — outstanding Medicare claims are a material asset; they must be tracked
- Clarify contractor doctor arrangements with the practice principal and their tax agent — do not assume contractor status without seeing the agreement
Healthcare bookkeeping done well is a genuine specialist service. Clients in this sector benefit enormously from bookkeepers who understand the GST rules, the billing mechanics, and the contractor landscape — and are willing to engage proactively with their tax agent when the questions get complex.
This article was last reviewed on 17 November 2026. GST rules for health services and Medicare arrangements may change — always confirm current ATO guidance at ato.gov.au and consult a registered tax agent for specific advice.