NDIS invoicing requirements for allied health providers

An NDIS invoice that comes back unpaid is rarely about the clinical work. It is a missing participant number, a support item that does not match the plan, a service date outside the plan period, or an invoice sent to the wrong organisation. Each one is small. Together they are why some allied health practices wait weeks for money they earned on the day.

The requirements are not complicated once you sort them by who is paying. This guide sets out the fields every NDIS invoice should carry, what changes with each management type, the shape of the GST rules, and the date mistake that catches out careful practices. For current detail, check the NDIS pricing schedule (from 2026-27 the maximum prices are set in it by the Minister), the NDIA's Pricing Arrangements and Price Limits guidance, and the NDIA's own pages for providers. They change; this post does not.

The fields every NDIS invoice should carry

Whichever way a plan is managed, a good NDIS invoice lets a stranger answer four questions at a glance: who was supported, by whom, with what, and when. In practice that means:

• Your business details: business name, ABN and contact details, plus your NDIS registration number if you are registered.
• The participant: full name and NDIS number. A name alone is not enough when a plan manager looks after two participants with the same surname.
• An invoice number and the date of issue.
• Each support as its own line: the support item number from the current NDIS pricing schedule, a plain description, the date of service, the quantity (hours or units) and the unit price.
• The GST treatment of each line, and the total.
• How to pay you: bank details or PayID, and your payment terms.

Add the practitioner's name where it helps the payer match the service, and any reference the plan manager has asked you to quote. Our earlier post on what NDIS plan managers need on an invoice goes deeper on which of these causes the most rejections.

What changes with each management type

An NDIS plan is agency-managed, plan-managed or self-managed, and different parts of one participant's plan can be managed in different ways. Each type has its own route to payment, so confirm which applies at intake rather than finding out when an invoice bounces.

Agency-managed (NDIA-managed). Only registered providers can deliver supports funded this way. You do not send an invoice to the participant or the NDIA. You make a payment request through the NDIS provider portal, one at a time or as a bulk upload file. You still need records that support every claim: the date, the support delivered, its duration, and your agreement with the participant.

Plan-managed. The invoice is addressed to the plan manager, who pays you from the participant's plan. The participant is still named as the person who received the support; they are the patient, not the payer. Under the current rules unregistered providers can generally work with plan-managed participants, but the price limits still apply. Registration settings are under reform, so check where you stand with the NDIS Quality and Safeguards Commission.

Self-managed. The invoice goes to the participant, or to their nominee or representative, who pays you and claims from their plan. Self-managed participants have the most choice about which providers they use, but your invoice should still carry the full set of fields above, because they need it to make their own claim and keep their own records.

GST: the shape of the rule

Supports delivered to an NDIS participant are often GST-free, but not automatically. In broad terms, the ATO describes four conditions: the participant has a plan in effect, the support is a reasonable and necessary support in that plan, there is a written agreement with the participant or their representative that identifies the supply as one of those supports, and the support is of a kind covered by the Minister's GST-free determination for NDIS supports. Equipment and consumables you on-sell can be treated differently from therapy time.

That is the shape, not advice. Confirm how GST applies to your supports with the ATO or your accountant, then set the treatment per service so every invoice tells the truth without anyone deciding it line by line.

Service date versus invoice date

The date of service is the day the support was delivered. The invoice date is the day you issued the invoice. They are often weeks apart, especially for practices that bill fortnightly or monthly, and the difference matters. Payers check the service date against the plan period and the funds available. A support delivered after a plan ended is not covered by the next plan just because the invoice was raised while it was active.

• Print the service date on every line, separate from the invoice date.
• When you put a fortnight or a month onto one invoice, list each visit as its own dated line rather than one total.
• Watch plan end dates. Check a participant whose plan is due for reassessment before you book past the end date, not after.
• Claim promptly. Old claims are the hardest to fix, and the NDIA sets an outer time limit for payment requests and checks late claims more closely; confirm the current rules with the NDIA.

Cancellations and travel have their own rules

Short-notice cancellations and provider travel can be claimable, but only under the conditions in the NDIA's pricing guidance, and only where your service agreement with the participant provides for them. Each is claimed in its own way, within its own limit. Treat them as separate lines, using the items the current pricing schedule lists for them (it now lists separate cancellation and provider travel items for therapy supports), never as extras folded into the session fee.

How AspireOS sets this up

In AspireOS, each patient's funding card records the NDIS details your invoices need, including how the plan is managed, with the plan manager linked as a contact. Each service in your price book carries its own price, item code, cancellation code and travel rules per funder, and GST, GST-free or BAS-excluded can be set per service. You enter your own support item numbers and price limits: AspireOS keeps no copy of the NDIS pricing schedule and does not update prices for you. Your limits then act as caps on the invoice.

Completing a visit drafts its invoice, and nothing is sent until a person reviews it. The branded PDF tax invoice prints your ABN, the participant's NDIS number, the plan manager and the dates of service, and plan- and self-managed invoices are emailed to the right payer. For agency-managed participants, the NDIS upload tab in Finances builds the bulk payment file and flags problems first; you then upload it in the NDIS portal yourself. The NDIS providers page and the full feature list cover the rest.

You can start free, enter your own services and item codes, and raise a test invoice to see exactly how it reads before a plan manager does.