The short answer
- Each line needs a date, support item, times or quantity, and a price within the current limit.
- A short service note per session explains what was done and links it to your goals.
- A signed or confirmed record of delivery is the strongest proof a plan manager can see.
- Travel and cancellation charges need a reason and must be allowed in your service agreement.
- You can ask for the service record before approving payment — it is your funding.
Step by step
- 1
Check the basics on every invoice
Your name and NDIS number, the provider’s business name and ABN, an invoice number and date, and for each line the date delivered, the support item and its name, the times or quantity and the unit price.
- 2
Look for the “why” behind each line
A line that just says “support provided” is hard to approve. A good service note says what was done, for how long, and how it relates to your plan goals.
- 3
Confirm the service actually happened
A simple sign-off at the end of each session — by you or your nominee — is the clearest proof. Once signed, that record should not be changed. If a session did not happen as listed, say so before the invoice is paid.
- 4
Query anything that does not match
If the item, time or price looks wrong, ask the provider to explain or correct it. Your plan manager can hold payment while it is sorted, and you can make a complaint if it is not fixed.
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Common follow-up questions
Why do NDIS invoices get knocked back?
The most common reasons are a support item that does not match what was delivered, vague descriptions with no times or service notes, a price above the current limit or the wrong rate for the time of day, dates outside the plan, travel or cancellation charges with no reason, and no proof the participant received the service.
Do I have to sign something after each support session?
It is not a single national form, but a signed or confirmed record of each session is good practice and the clearest proof for your plan manager. Many providers ask you or your nominee to confirm the date, times and what was done. You can ask your provider to set this up.
Can my plan manager refuse to pay an invoice?
A plan manager can hold or query an invoice that is unclear, outside your plan, above the price limit, or that you have not agreed to. They pay on your behalf, so they need to be satisfied the support was delivered and matches your plan. If you disagree, talk to them and the provider first.