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by billadmin · Apr 14, 2026

NDIS Invoice Requirements

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Mastering the NDIS Invoice: A Simple Guide to Getting Paid

Creating your first invoice can feel a bit like learning a new language. When you add the specific rules of the National Disability Insurance Scheme (NDIS) into the mix, it's easy to feel overwhelmed.

Whether you are a sole trader providing gardening services or a therapist starting your own practice, getting your invoice right is the difference between being paid in days or waiting weeks while you fix paperwork errors.

Here is a simple breakdown of what needs to be on your NDIS invoice and, more importantly, why.

1. The Basics: Standard Tax Invoice Requirements

Even before we look at the NDIS, the Australian Taxation Office (ATO) has rules for what makes a document a "Tax Invoice." If you are registered for GST, these are non-negotiable:

  • The words "Tax Invoice": This must be clearly visible at the top.
  • Your Business Name and ABN: This identifies who is providing the service.
  • The Date of Issue: When you created the invoice.
  • A Unique Invoice Number: This is vital for your own records and the NDIS.
  • A Brief Description: What did you provide? (e.g., "Mowing and edge trimming").
  • The GST Amount: Most NDIS services are GST-free, but if you charge GST it must be shown.

2. The NDIS Must-Haves

The NDIS has its own set of "identity" requirements to ensure the funding comes from the right person's budget.

  • The Participant's Full Name and NDIS Number: Matches the invoice to the correct person.
  • Date of Service: Date ranges are allowed however using specific dates is recommended. Cannot invoice in advance!
  • NDIS Support Item Number: The specific code from the NDIS Support Catalogue.
  • Quantity and Hourly Rate: Show how many hours and your rate per hour.
  • Appropriate Qualifications: Include registration numbers and professional memberships.

Highly Recommended – Best Practice

  • Supplier address: Crucial for the customer to verify who you are.
  • Your Contact Details (postal address, email, phone) so they can talk to you about the invoice and how to pay it.
  • Your Customer's Information: Customer Name or business address and ABN - required if the invoice is over $1000.
  • Payment Details: Account name, BSB and account number, So they can pay you.

3. Why Accuracy Matters

If a single digit is wrong in an NDIS number or a Support Item code, the system will often "bounce" the claim automatically. Furthermore, the NDIS sets Price Caps. If you accidentally charge above the cap, the invoice will be rejected.

A smiling woman in a white shirt, sitting at a neat, organized desk with a calculator. Create Your First Invoice

You can edit, duplicate and make as many other invoices as you want for 30 days completely free of charge. Give it a try? There's nothing to lose.

Making it Easy with Billability

If you've never created an invoice before, you don't have to do it manually. Tools like Billability are designed specifically for people in your position. You can use Billability now for free - no credit card required.

  • Includes the full NDIS Catalogue: Search for a service, and it pulls the correct item number and current price cap.
  • Automates the boring stuff: Handles invoice number increments and payment tracking.
  • Ensures Compliance: Guides you through the required fields so nothing is missed.

A Few Recommendations

Always Add The Line Item

Some providers leave the item code out because they are unsure which category the funds should be drawn from. This is technically not legal. No-one is allowed to modify your invoice once you have sent it, so many plan managers will reject it. Use our item code finder and pick the item that closely aligns to your service.

One Line Per Session

Avoid sending one invoice per month with a single line and date range. You risk providing the whole month for free if the plan runs out of funds. It's also hard for your participant to understand or confirm charges. Always make a new line for each time you provided services and avoid date ranges.

Summary Checklist

  1. 1 Is it titled "Tax Invoice"?
  2. 2 Does it have your ABN and the participant's NDIS number?
  3. 3 Is there a unique invoice number?
  4. 4 Does the price per hour stay within the NDIS Price Cap?
  5. 5 Are your bank details (BSB and Account Number) clear?