Why GST-Free Doesn't Mean GST-Unregistered
The most common misunderstanding about dental practice GST is the belief that because most services are GST-free, the practice does not need to worry about GST at all. This is incorrect. Your dental practice is registered for GST, which means you still lodge a BAS each quarter, still report your total supplies (including the GST-free portion at label G1), and still claim all the GST you have paid on practice expenses as input tax credits at label 1B.
The key legislative provision is Division 38-B of the A New Tax System (Goods and Services Tax) Act 1999. This division creates the GST-free status for health services including clinical dental treatment carried out by or under the supervision of a registered dental practitioner.
GST Treatment by Dental Service Type
| Service or Product | GST Status | Reason | Xero Tax Code |
|---|---|---|---|
| Examinations and preventive | GST-Free | Division 38-B clinical dental treatment | FRE or BAS Excluded |
| Fillings, RCT, extractions | GST-Free | Clinical treatment by registered practitioner | FRE or BAS Excluded |
| Crowns, bridges, implants | GST-Free | Clinically necessary prosthodontic work | FRE or BAS Excluded |
| Orthodontic treatment | GST-Free | Division 38-B clinical dental treatment | FRE or BAS Excluded |
| Teeth whitening (clinical) | GST-Free | Supervised clinical procedure | FRE or BAS Excluded |
| Retail oral care products | Taxable (10% GST) | Not clinical treatment; retail supply | GST on Sales |
| Purely cosmetic procedures | Taxable (10% GST) | Not clinically necessary; not MBS listed | GST on Sales |
| Medicolegal / expert reports | Taxable (10% GST) | Professional service, not clinical treatment | GST on Sales |
| Laboratory fees on-charged | Context-specific | If part of bundled clinical service: GST-free; if separate supply: may be taxable | Seek advice |
| Dental equipment (purchased) | Full ITC claimable | Business input regardless of GST-free services | GST on Purchases |
Source: ATO: GST and Health Services. Always verify with your accountant or BAS agent for specific service types.
Quarterly BAS Checklist for Dental Practices
| BAS Label | What to Include | Common Errors |
|---|---|---|
| G1 — Total sales | All income including GST-free clinical fees + taxable retail + GST-free amount | Excluding GST-free income; under-reporting total supplies |
| G3 — GST-free sales | Clinical dental services with no GST component | Including taxable items here; Xero tax code errors |
| 1A — GST on sales | GST collected on retail products and taxable services only | Inflated by clinical income posted to wrong tax code |
| 1B — GST credits | All GST paid on business purchases: equipment, supplies, rent, software | Missing ITC on large equipment purchases; expenses posted without GST code |
| W1 — Gross wages | Total gross wages paid before tax in the quarter | Missing associate payments; super not excluded |
| W2 — PAYG withheld | Tax withheld from employee wages in the quarter | Discrepancy with STP data reported to ATO |
| T1 — PAYG instalment | Pre-paid tax on business income if in instalment system | Not reviewing whether variation is appropriate |
Watch: Dental Practice GST and BAS Explained
Read the full video transcript
GST treatment for dental practices is one of the more nuanced areas of bookkeeping in the health sector, and getting it wrong creates problems on both the BAS and in the annual accounts. Today I want to explain which dental services are GST-free, which are taxable, what this means for your input tax credits, and how to set up Xero correctly so your BAS figures are always accurate.
Under Division 38-B of the GST Act 1999, clinical dental treatment by or under the supervision of a registered dental practitioner is GST-free. This covers examinations, preventive care, fillings, root canals, extractions, crowns, bridges, orthodontics, implants, periodontal treatment, and clinical teeth whitening. You do not charge GST on these services.
However, not everything a dental practice does is GST-free. Retail oral care products sold at the desk, purely cosmetic procedures that are not clinically necessary and not MBS-listed, and medicolegal reports all attract GST at ten percent. Even though most of your income is GST-free, your practice is still registered for GST and can claim full input tax credits on all business expenses. Your equipment, fit-out, software, accounting fees, electricity, and rent all carry GST, and all of those credits are claimable on your BAS.
In Xero, GST-free clinical services should use the FRE or BAS Excluded tax code. Retail product sales should use the GST on Sales code. All practice expenses with GST should use the GST on Purchases code so the 1B credits are captured correctly. If your bookkeeper has set clinical services to a taxable code, your BAS will overstate the GST you have collected. True Tally helps dental practices across Victoria set up correct GST configuration and prepare accurate BAS lodgements each quarter. Book a free call at truetally.com.au or call 0468 159 950.
Last updated July 2026
Frequently Asked Questions
Is dental treatment GST-free in Australia?
Yes. Clinical dental treatment is GST-free under Division 38-B of the GST Act. This includes most procedures performed by or under the supervision of a registered dental practitioner. Retail products and medicolegal work are taxable.
Can a dental practice claim input tax credits?
Yes. Being registered for GST entitles the practice to claim full input tax credits on all business expenses regardless of the GST-free nature of the clinical services.
Is cosmetic dentistry GST-free?
Purely cosmetic procedures that are not clinically necessary and not MBS-listed may not qualify for the GST-free exemption. Clinical procedures that also have aesthetic outcomes are generally GST-free. Seek specific advice for your procedure mix.
Dental practice BAS lodgement and Xero setup
True Tally lodges BAS for dental practices across Victoria as a registered BAS agent. We review GST tax code setup, claim all eligible input tax credits, and lodge on time with extended agent deadlines. Book a free 20-minute call.
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