Australia Independent NDIS Support Worker & Allied Health Sole Trader Guide: ABN Invoice, 0% GST-Free (s 38-38) & ATO 88c/km Deductions (2025–26)

Short answer: Under A New Tax System (Goods and Services Tax) Act 1999 (s 38-38 Disability Support and s 38-10 Allied Health) and ITAA 1997 (s 8-1 and Div 28), this australia ndis support worker sole trader abn invoice gst guide covers three critical rules: most written-agreement NDIS supports and recognized allied health services are GST-free (0% GST), meaning a GST-registered sole trader charges $0 GST while claiming 100% of Label 1B GST credits on car, fuel, iPad, and insurance costs; client-to-client travel is deductible at 88 cents/km; and every $100 missed costs $32 to $47.

⚡ Instant Australia NDIS Support Worker & Allied Health Sole Trader ABN Invoice + ATO Toolkit ($0/Mo — 100% Unlimited): Generate plan-manager-ready NDIS line-item invoices (0% GST-free + ABN + participant NDIS number) and 88c/km travel logs in the Free Australian ABN Invoice & Tax Generator (or click 🔗 Embed / CSV Template), email mert@usekeelapp.com for Free .keel Data Setup, explore the AU/NZ Sole Trader & Tradie App Store Edition and Consultant & Freelancer Invoice Edition, or Download Keel on the App Store ($0/mo Core — 100% Unlimited) (au-nz-tradies).

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Why do Plan Managers reject independent NDIS support worker invoices—and how does s 38-38 GST-Free status give you cash BAS refunds?

Over 150,000 independent disability support workers, occupational therapists (OTs), speech pathologists, physiotherapists, exercise physiologists, psychology/counselling practitioners, and support coordinators operate as ABN sole traders across Sydney, Melbourne, Brisbane, Perth, and Adelaide—either billing Plan-Managed and Self-Managed NDIS participants directly or working through platforms like Mable.

Two mistakes cost independent NDIS and allied health sole traders thousands of dollars every year under Australian Taxation Office (ATO) rules:

1. Missing Mandatory NDIS Plan-Manager Fields (48-Hour Payment Delay vs Rejection): Plan managers (My Plan Manager, Plan Partners, NIB Thrive, Leap in!) use automated optical scanners. If your PDF invoice is missing your 11-digit ABN, the participant’s full name and NDIS number, the exact NDIS Support Catalogue item number (e.g., 01_011_0107_1_1 Assistance with Self-Care Activities — Standard Weekday Daytime), the date and hours delivered, or a clear $0.00 GST (GST-Free) line, the invoice is automatically quarantined.
2. The s 38-38 GST-Free Cash Refund Advantage (Label 1B on Simpler BAS): Under GST Act section 38-38 (and section 38-10 for listed allied health professions), NDIS supports are GST-free (0%) when four conditions are met: (a) the participant has an active NDIS plan in effect; (b) the support is of a kind determined by the Disability Services Minister; (c) it is reasonable and necessary in the participant’s plan; and (d) it is made under a written Service Agreement stating the support is a reasonable and necessary support specified in the participant’s plan.
   • Because GST-free supplies still count toward the $75,000 GST turnover threshold and are not input-taxed, once you register for GST (voluntarily under $75,000 or mandatorily at $75,000+), you charge 0% GST on your NDIS invoices (Label 1A = $0), yet claim 100% of the 1/11th GST (Label 1B) you paid on fuel, car servicing, iPads, Mable platform fees, and insurance—receiving a quarterly cash refund from the ATO!
3. Evaluability Hypothesis (Hsee, 1996) & Loss Aversion ($\lambda \approx 2.25$): At the 30% + 2% Medicare Levy (32%) or 37% + 2% (39%) Australian resident tax bracket, every $100 in unrecorded client-to-client kms, Worker Screening renewals, or PPE dockets costs you $32.00 to $39.00 in extra ATO income tax (plus $9.09 in lost Label 1B GST credits if GST-registered!).

See how Simpler BAS works in Australia How to Do a BAS and Australia ATO Tax Invoice Requirements.

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Which NDIS invoice fields and ATO tax deductions apply to support workers and allied health sole traders in 2025–26?

Use this 2025–26 ATO compliance matrix to claim every legitimate sole trader deduction while avoiding audit red flags:

NDIS Support Worker / Allied Health Expense	ATO Tax Return / Simpler BAS Treatment	2025–26 Statutory Rule (ITAA 1997 & TR 95/15)	Cash Tax Saved per A$1,000 (32% Bracket + 1/11th GST Credit)
Driving between Participant A and Participant B + transporting participants in your car (5,000 km)	Business Car Expenses (Cents per km or 12-Week Logbook)	88 cents per km (2025–26 rate, up to 5,000 km = A$4,400 without fuel receipts) OR Logbook % of all fuel, rego, comprehensive business insurance, servicing & depreciation	A$1,408 tax saved on 5,000 km (A$4,400 × 32%)
NDIS Worker Screening Check, Working With Children (WWCC), Police Check, First Aid & CPR / Manual Handling courses	Other Business Expenses (100% deductible)	Ongoing renewal of Worker Screening, WWCC, AHPRA registration, and annual CPR/First Aid updates are 100% deductible (initial pre-commencement background checks before starting business are capital)	A$320 income tax saved
Public Liability ($10M–$20M) & Professional Indemnity / Malpractice Insurance (BizCover, Aon, Guild)	Insurance Expenses (100% deductible)	100% deductible in the year paid	A$320 income tax saved
Platform service fees (Mable 10% fee, accounting software)	Contract / Commission / Fee Expenses	Always report gross participant billings as income and deduct the 10% platform fee + claim the 1/11th GST credit on Label 1B	A$320 tax + A$90.91 GST credit
iPad, laptop, therapy kit, sensory toys, massage table, blood-pressure monitor (< A$20,000)	Instant Asset Write-Off (Small Business Pool)	100% immediate write-off for eligible assets costing under A$20,000 first used or installed ready for use in 2025–26	A$320 tax + A$90.91 GST credit
PPE (nitrile gloves, masks, hand sanitiser, aprons) & compulsory non-slip safety shoes	Protective Clothing & Supplies	100% deductible under TR 2003/16 when required for personal care, hygiene, or hoist/manual-handling safety (ordinary gym activewear or plain street clothes are not deductible)	A$320 tax + A$90.91 GST credit
Home office for shift progress notes, clinical case notes & NDIS invoicing	Home Office Expenses	70 cents per hour (2025–26 ATO Revised Fixed Rate method) or actual business % of power, internet & phone	A$224 tax saved on 1,000 hrs (A$700 deduction)

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How do you bill NDIS Provider Travel (Time vs Non-Labour Kilometres) on your invoice?

Under the NDIS Pricing Arrangements and Price Limits (PAPL), billing for travel requires separating Provider Travel — Time from Provider Travel — Non-Labour Costs (Kilometres) on two distinct invoice lines:

1. Line 1 — Core / Capacity Building Support Delivered:
   • Example: 01_011_0107_1_1 — Assistance with Self-Care Activities (Standard Weekday Daytime: 07/11/2026, 09:00–13:00, 4.0 hrs @ $67.56/hr) — $270.24 (GST-Free)
2. Line 2 — Provider Travel (Time, capped by MMM zone):
   • Up to 30 minutes in Metro/Regional areas (MMM 1–3) or 60 minutes in Remote areas (MMM 4–5) travelling directly to the participant (must be agreed in the Service Agreement).
3. Line 3 — Provider Travel — Non-Labour Costs (Activity-Based Transport / Kilometres):
   • Use the dedicated NDIS transport support code (such as 01_799_0107_1_1 or 04_590_0125_6_1 for community participation kilometres, typically billed at $0.97/km per Service Agreement) when driving a participant to appointments or community activities.
   • Important ATO Tax Rule: Any per-kilometre reimbursement ($0.97/km) paid to you by an NDIS participant or Plan Manager must be included in your assessable business income on your tax return—and you then offset it by claiming your 88 cents/km (2025–26) or 12-week logbook deduction!

Check the full vehicle rules in Australia Car Expenses Cents per Km and Australia ATO Car Logbook Guide.

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How does the ATO Personal Services Income (PSI) rule apply if 80%+ of your income comes from one client or agency?

If you work under an ABN as an independent support worker or allied health contractor, check the ATO Personal Services Income (PSI) rules:

• If you support multiple independent NDIS participants, advertise your services publicly (or on Mable/local directories), and maintain your own $10M+ Public Liability & Professional Indemnity policy, you typically pass the Unrelated Clients Test and operate as a Personal Services Business (PSB).
• However, if 80% or more of your ABN income comes from a single labour-hire agency or single NDIS provider where you simply work rostered shifts at an hourly rate without supplying equipment or rectifying defects, PSI rules may restrict certain home-occupancy or spouse-payment deductions (though your client-to-client car travel, insurances, and Worker Screening fees remain deductible).

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Worked example: 2025–26 ATO tax return + Simpler BAS refund for an independent NDIS support worker earning A$82,000

Suppose a GST-registered independent NDIS support worker in Brisbane bills A$82,000 (0% GST-Free under s 38-38) across 5 plan-managed and self-managed participants:

• Gross Assessable Business Income (Item P8): A$82,000 (Label G1 = A$82,000, Label 1A GST on Sales = A$0)
• Allowable Business Deductions (A$14,890 ex-GST) + Label 1B Cash BAS Refunds (A$890):
  • Participant-to-Participant & Community Transport Driving (5,000 km × 88c/km): A$4,400
  • Mable Platform Fees (A$5,200 ex-GST + A$520 GST refunded on BAS): A$5,200
  • iPad Pro & Sensory/Mobility Aid Kit under A$20,000 Instant Asset Write-Off (A$1,850 ex-GST + A$185 GST refunded): A$1,850
  • Public Liability & Indemnity Insurance, First Aid/CPR, Worker Screening & PPE (A$2,460 + A$185 GST): A$2,460
  • Home Office Progress-Note Administration (1,400 hrs × 70c/hr): A$980
• Total ATO Income Tax + Medicare Levy + BAS Refund Benefit: A$5,655 in combined cash tax savings and quarterly BAS refunds!

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Frequently asked questions

Do independent NDIS support workers charge 10% GST on invoices? Usually no (0% GST-Free), provided you have a written Service Agreement with the participant confirming the support is a reasonable and necessary support specified in their active NDIS plan and the service is listed in the GST-Free Supply (National Disability Insurance Scheme Supports) Determination under GST Act section 38-38 (or is a recognized allied health service under section 38-10). Always mark those lines GST-Free ($0.00 GST).

Should I register for GST voluntarily if my NDIS turnover is under $75,000? Often yes! Because NDIS supports under s 38-38 are GST-free (0%) rather than input-taxed, registering for GST voluntarily means you still charge your NDIS participants 0% GST, but you can file a quarterly Simpler BAS to claim back 100% of the 1/11th GST (Label 1B) you paid on fuel, car servicing, tyres, iPads, phones, and Mable fees—turning your BAS into a cash refund every quarter.

What happens if my NDIS invoice is missing my 11-digit ABN? Under the Taxation Administration Act 1953 (Schedule 1, s 12-190), a business or Plan Manager paying an invoice over A$75 (excluding GST) that does not display a valid 11-digit ABN is legally required to withhold 47% (No-ABN Withholding)—or freeze payment until a compliant ABN invoice is supplied.

Can I claim driving from my home to my first NDIS participant of the day? Under ATO Ruling TR 95/15 and ITAA 1997 Div 28, travel from your home to your first client’s house is non-deductible private commuting unless you are required to transport bulky therapy/mobility equipment (like a portable massage table, hoist, or large sensory/physio kit) that cannot be stored at the client’s site, OR you are an itinerant worker shifting between multiple workplaces daily under TR 95/34. However, every kilometre driven directly from Participant A’s home to Participant B’s home, and every kilometre transporting a participant in the community, is 100% deductible at 88 cents/km (2025–26).

Can I deduct coffees or meals bought for myself while accompanying an NDIS participant on a community outing? No. Under Section 8-1 of the Income Tax Assessment Act 1997, the ATO strictly classifies food, coffee, and drink consumed by a support worker during a regular daytime shift (even when sitting at a café or restaurant alongside a participant during a community access outing) as a private non-deductible living expense—unless you are travelling overnight away from home for work.

How do I create NDIS line-item invoices and track 88c/km participant trips on iPhone? Download Keel on the App Store ($0/mo Core — 100% Unlimited)—no trial clock, no credit card, and no bank login required (you are completely free to keep using your current spreadsheets, or email mert@usekeelapp.com and we will set up your NDIS support codes, participant list, and expense records in .keel format for 100% Free!).

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Last verified November 7, 2026 against ATO NDIS & Health Industry GST Guidance (GST Act 1999 s 38-38 & s 38-10), ITAA 1997 s 8-1 & Div 28 (88c/km 2025–26), and NDIS Pricing Arrangements and Price Limits.