Working as an independent NDIS support worker comes with more responsibility than simply sending an invoice. You need to understand whether you are operating as a sole trader, when GST applies, what you can claim as a deduction and when the ATO expects you to start making PAYG instalments.
The good news is that many of the costs involved in running your support work can be deductible. The key is knowing which rules apply to you.
This guide reflects the position as at August 2026. Tax treatment depends on your circumstances, including whether you are an employee, sole trader or contractor.
Employee or Independent Support Worker? Start Here
Before looking at deductions, work out whether you are an employee or genuinely operating your own business.
An employee generally receives wages or salary, has tax withheld by their employer and does not need an ABN for their employment.
An independent support worker who is carrying on a business will generally operate as a sole trader, register for an ABN and declare their business income in their individual tax return.
The label in your contract is not the only factor. The actual working arrangement matters.
If you are unsure about your structure, our guide to what a sole trader is in Australia explains how the structure works.
Do NDIS Support Workers Need an ABN?
If you are genuinely operating your own support-worker business as a sole trader, you will generally need an Australian Business Number (ABN).
An ABN is free to apply for through the Australian Business Register and is used when dealing with clients, businesses and the ATO.
If you don’t quote an ABN when one is required, the payer may generally have to withhold 47% from your payment under the no-ABN withholding rules, unless an exception applies.
Your ABN does not mean you automatically have to register for GST. ABN registration and GST registration are separate obligations.
You can learn more about business identifiers in our guide to ABN vs ACN in Australia.
Do NDIS Support Workers Have to Register for GST?
This is where things become more complicated.
An NDIS support can be GST-free when the requirements in the GST legislation are satisfied. It is not automatically GST-free simply because you are an NDIS support worker.
For a supply to an NDIS participant to qualify as GST-free, the ATO says the relevant requirements generally include an NDIS plan being in effect, the support being a reasonable and necessary support specified in the plan, a written agreement, and the support being covered by the relevant NDIS determination.
The important difference for contractors
Consider two different arrangements.
- You provide support directly to an NDIS participant: The supply may be GST-free if all the requirements are satisfied.
- You work as a subcontractor for an NDIS provider: Your supply may be made to the provider rather than directly to the participant. That can produce a different GST outcome.
The ATO specifically gives an example where a contractor’s supply to an NDIS provider is taxable, even though the provider’s supply of the support to the NDIS participant is GST-free.
So don’t assume:
“It’s NDIS work, therefore I never charge GST.”
The nature of the supply and who you are supplying matter.
What about the $75,000 GST threshold?
The general GST registration threshold is $75,000 of GST turnover.
However, GST-free supplies do not simply become taxable because you cross $75,000. If all of your supplies are GST-free, exceeding that amount does not automatically mean you must register for GST.
The situation changes when you also provide taxable services.
For example, an NDIS support worker may provide participant support that qualifies as GST-free while also providing unrelated taxable services. Those taxable supplies need to be considered when determining whether GST registration is required.
For mixed income streams, get the GST treatment checked before you start adding GST to invoices.
What Tax Deductions Can an NDIS Support Worker Claim?
If you are operating as a sole trader, you can generally deduct business expenses that are genuinely connected with earning your business income and are not private expenses.
The most common deductions for NDIS support workers include the following.
1. Car and Travel Expenses
Travel is often one of the biggest expenses for support workers who move between participants.
For 2026–27, the ATO cents-per-kilometre rate is 91 cents per kilometre, with the cents-per-kilometre method available for up to 5,000 business kilometres per car.
Business travel can include eligible trips between clients and other work-related destinations.
But ordinary private travel and commuting cannot simply be claimed because you are self-employed.
For example, driving from home to a regular workplace is generally different from travelling between participants during your working day.
Keep a record of your business kilometres and the reason for the trip.
If vehicle costs are a major part of your business, our ute and vehicle tax deduction guide explains the different methods and common mistakes.
2. Phone and Internet
If you use your mobile phone or internet connection for your support business, the business-use portion may be deductible.
You might use your phone for:
- contacting participants
- communicating with providers
- managing appointments
- accessing work apps
- completing administration
- responding to business enquiries.
You cannot simply claim 100% of the bill because you own a business.
Keep records that support a reasonable business-use percentage.
3. Work Clothing and Protective Equipment
Ordinary clothing is generally not deductible simply because you wear it while working.
However, genuinely deductible protective clothing and equipment may qualify where the relevant requirements are met.
Examples can include protective footwear, gloves or other equipment required because of the nature of the work.
Our work clothes tax deduction guide explains the difference between deductible protective clothing and ordinary clothing in more detail.
4. Training and Professional Development
Training can be deductible where it has a sufficient connection with your existing income-earning activities.
For an established support worker, this may include relevant professional development, first-aid training, manual-handling training or other education that maintains or improves skills used in the existing business.
Training that qualifies you for a completely different occupation is generally treated differently.
The key question is whether the course relates to the work you are already doing to earn income.
5. Insurance and Business Costs
Depending on your circumstances, business-related insurance can be deductible.
This can include appropriate professional indemnity or public liability insurance.
Other ordinary business expenses may include:
- accounting fees
- bookkeeping
- business software
- invoicing software
- advertising
- website costs
- business bank fees
- stationery and administrative supplies.
The normal rule still applies: the expense needs to have a sufficient connection with earning your business income.
6. Equipment and Supplies
Equipment used in the business can potentially be deductible, but don’t automatically apply the employee $300 rule to your sole-trader business assets.
The tax treatment of business equipment depends on the relevant depreciation and capital allowance rules, including the cost of the asset and how it is used.
A low-cost consumable is different from purchasing an expensive piece of equipment that will be used over several years.
Our business asset depreciation calculator can help you model the potential treatment of business assets.
7. Home Office Expenses
Many independent support workers do administrative work from home.
You may spend time:
- preparing invoices
- maintaining participant records
- organising schedules
- completing business administration
- communicating with clients
- preparing plans or reports.
Where you genuinely incur eligible working-from-home expenses in running the business, the relevant home-office rules may allow a deduction.
You should keep records showing the business purpose and how the deduction was calculated.
What NDIS Support Workers Generally Cannot Claim
Some expenses feel work-related but are not automatically deductible.
Common examples include:
- Private meals: Buying lunch while working with a participant is generally a private expense. Special rules can apply when travelling for work and staying overnight, but ordinary meals during a normal shift are not automatically deductible.
- Parking fines and traffic penalties: These are generally not deductible.
- Personal grooming: Haircuts, ordinary grooming and similar personal expenses are generally private.
- Ordinary clothing: Plain shirts, pants and everyday shoes are generally not deductible simply because you wear them while supporting participants.
- Private car use: You cannot claim the private portion of your vehicle expenses.
- Reimbursed expenses: If another party has reimbursed you for an expense, you generally cannot also claim the reimbursed amount as your own deduction.
Keep Records From Day One
Good records make tax time much easier. Keep:
- invoices and receipts
- bank statements
- vehicle and kilometre records
- phone and internet records
- insurance documents
- training invoices
- equipment purchases
- business income records
- records supporting any private-use apportionment.
For business records, the general retention period is five years, although some specific records can have different requirements.
Don’t wait until June to reconstruct 12 months of business expenses.
A bookkeeping system, accounting platform or dedicated mileage tracker can make this considerably easier.
When Do NDIS Support Workers Pay PAYG Instalments?
Unlike an employee, a sole trader doesn’t generally have tax automatically withheld from every payment.
After you lodge your tax return, the ATO may place you into the PAYG instalment system if you meet the relevant conditions.
You then make instalment payments during the year towards your expected income-tax liability rather than waiting until tax time.
For 2026–27, the ATO’s GDP adjustment factor for quarterly PAYG instalments is 5% for taxpayers whose income year starts from 1 April 2026, although your actual instalment amount depends on the method and circumstances applying to you.
The practical lesson is simple:
Don’t treat every dollar you receive as money you can spend.
Set aside money for tax from your first invoice so a future tax bill doesn’t catch you by surprise.
How Much Tax Will an NDIS Support Worker Pay?
As a sole trader, you don’t pay a separate “NDIS support worker tax”.
Your net business profit is included in your individual taxable income.
That means:
Business income − allowable business deductions = net business profit
Your individual tax rate then depends on your total taxable income and circumstances.
Your final liability can also be affected by the Medicare levy, HELP debt, offsets, other income, private health insurance and other factors.
Our sole trader tax calculator can give you an indication of how income and business expenses affect your estimated tax position.
Sole Trader or Company?
Most independent support workers start by considering a sole-trader structure because it is comparatively simple to establish and operate.
But there is no universal profit figure at which you should automatically switch to a company.
The right structure can depend on:
- expected profit
- how much money you need personally
- whether profits will be retained in the business
- commercial and liability considerations
- personal services income rules
- administrative costs
- future plans for the business.
Don’t incorporate simply because someone tells you “companies pay 25% tax”.
A company structure can create additional tax and compliance considerations, and company tax is not the same as the final tax paid when profits are extracted personally.
Our guide to sole trader vs company explains the differences.
Get Your NDIS Support Worker Tax Right
Running your own NDIS support business gives you more control, but it also means you are responsible for getting the tax side right.
The most important things to get right are:
- Your structure: Know whether you are genuinely an employee or operating as a contractor/sole trader.
- Your GST treatment: Don’t assume every NDIS-related invoice is automatically GST-free.
- Your deductions: Claim legitimate business expenses, but keep private costs out.
- Your records: Keep evidence throughout the year rather than trying to rebuild everything at tax time.
- Your tax cash flow: Put money aside for income tax and PAYG instalments.
At KSH TAX, we work with sole traders and small businesses across Australia to handle tax, bookkeeping, BAS and planning without burying you in accounting jargon.
For NDIS support workers who are growing their income, our Tax Planning service can help you look beyond the next tax return and plan ahead.
Need help getting your NDIS support-worker tax right? Book a free consultation with us or call 08 6285 8110. We reply within two business hours.
