TAX • 18 SEPTEMBER 2025 • 5 MIN READ
Navigating GST as an NDIS provider

SECTIONS
Understanding when NDIS services are GST-free
When does GST apply? (the important exceptions)
Managing mixed supplies
The $75,000 question: GST registration
Claiming GST on business expenses
Common pitfalls (and how to avoid them)
Key compliance tips for NDIS Providers
Get clarity and confidence in your NDIS Business
As an NDIS provider, your focus is on delivering essential support to participants. However, while you’re managing the needs of your clients, you also have to navigate the complexities of business administration. One of the most common challenges is understanding your obligations around Goods and Services Tax (GST).
The rules can seem confusing, but getting them right is crucial for your compliance and cash flow. In this guide, we'll explain how GST applies to NDIS services, how it impacts your business, and what you need to know to operate with confidence.
Understanding when NDIS services are GST-free
To ensure support remains accessible and affordable, many NDIS services are classified as GST-free under Australian tax law. This means you don’t add GST to your invoices for these services.
However, for a service to qualify as GST-free, four conditions must be met:
1. The participant must have an active NDIS plan
Your client’s plan must be current and approved by the National Disability Insurance Agency (NDIA).
2. The support must be ‘reasonable and necessary’
The service you provide must be specified in the participant’s NDIS plan as 'reasonable and necessary' support. Any support supplied beyond the amount or scope outlined in the plan is not GST-free.
3. There is a written agreement
You must have a written agreement with the participant or their representative (like a plan manager or guardian). This doesn't have to be a single formal document - it can be a combination of letters, invoices, and electronic communications that show an obligation for you to supply the support.
4. The supply is covered by one of the tables in the official 2021 government determination
The service you provide must be listed in ‘A New Tax System (Goods and Services Tax) (GST-free Supply - National Disability Insurance Scheme Supports) Determination 2021’.
Examples of GST-free support
- Core support e.g. assistance with daily personal activities, household tasks, and community participation
- Capacity building e.g. therapeutic supports, behavioural support, and skills development
- Capital support e.g. home modifications and assistive technology
- Other support e.g. plan management, interpreting services, and specialist disability accommodation
When does GST apply? (the important exceptions)
While it’s important to understand when a supply is GST-free, it’s equally important to recognise when GST does apply.
GST generally applies when:
- One or more GST-free criteria are not met
- Services supplied are not directly connected to a specific participant's plan
- Goods or services fall outside the scope of the NDIS (e.g. general lifestyle services or non-essential add-ons)
- Services are supplied to an organisation rather than directly to an NDIS participant
Managing mixed supplies
Many NDIS providers offer a combination of GST-free and taxable goods or services, known as mixed supplies. This can make compliance tricky.
Having a system that correctly handles both is crucial to avoid errors in invoicing and reporting. Here are a few tips for navigating mixed-supply invoicing:
- Itemise GST-free and taxable items separately and clearly
- Use accurate descriptions, referencing the participant's NDIS plan or the determination category of your service (where possible)
- Be cautious of bundling taxable items with GST-free services. In some situations, ‘incidental’ items may be GST-free as part of supplying the service, but strict ATO rules apply
- Keep clear records. Your accounting system should track GST-free and taxable supplies separately for accurate reporting on yur
The $75,000 question: GST registration
In Australia, you’re required to register for GST if your annual turnover from taxable supplies is $75,000 or more.
Since GST-free income doesn’t count towards this threshold, you could earn $200,000 in total revenue but not be required to register (provided less than $75,000 comes from taxable goods or services).
So the real question becomes, should you register anyway?
If you want to claim back GST on eligible business expenses, then you’ll need to register. You can’t claim GST on business purchases unless you’re officially registered for GST with the Australian Tax Office.
Claiming GST on business expenses
Even if all or most of your services are GST-free, you’re still likely paying GST on expenses like office supplies, equipment, vehicle expenses, contractor or sub-contractor fees.
If you’re registered for GST, you can claim these amounts back as GST credits on your Business Activity Statement (BAS).
For some NDIS providers, voluntary GST registration can be financially worthwhile even if your taxable turnover is below the $75,000 threshold.
Common pitfalls (and how to avoid them)
Even with the best intentions, it’s easy to make mistakes when it comes to GST. We've put together a few common pitfalls and how to stay on the right side of compliance.
1. Charging GST in error
If you incorrectly charge GST on a GST-free service, you’re still required to remit that amount to the ATO. To fix this, you must issue a corrected, GST-free invoice and refund the GST portion to the participant or their plan manager.
2. Assuming all NDIS income is GST-Free
Always check that the four conditions for a GST-free supply are met for each service and participant. Even minor changes in circumstances could alter the GST status.
3. Missing or incorrectly claiming GST credits
Providers who aren’t required to register for GST often miss out on GST credits. It's worth reviewing whether voluntary registration could benefit your business.
On the flip side, incorrect GST claims are common. To stay compliant, always keep detailed receipts and ensure claims relate to legitimate business expenses.
Key compliance tips for NDIS Providers
While our other article on NDIS compliance provides a much more detailed overview of financial compliance beyond GST, here are a few short tips to get you started.
- Keep meticulous records: maintain clear evidence of written agreements and records of how your services align with each client's NDIS plan.
- Use accounting software: use a system that can handle different GST codes for simpler invoicing and BAS reporting
- Issue compliant invoices: clearly state your ABN, the services provided, and GST amounts (if any)
- Stay updated: regularly review ATO guidance, as rules can change.
- Seek professional advice: when in doubt, getting expert help is the safest option.
Get clarity and confidence in your NDIS Business
Navigating GST in the NDIS space isn’t just about ticking boxes. It’s also about keeping your finances in order so you can focus on delivering essential services to your clients.
By understanding when services are GST-free, managing mixed supplies, and maintaining accurate records, you’re well on your way to staying compliant and minimising risks.
The rules can be complex, but you don't have to manage them alone. If you need assistance with your NDIS accounting and navigating GST requirements, we’re here to help. Book a call or get in touch for a free consultation.
Vanessa Atzeni
Lead Accountant
With over 25 years of experience, I'm dedicated to providing top-notch business advisory and taxation services to clients. Outside of work, I find joy in travel, hiking and listening to music.
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