Can an NDIS service agreement be signed electronically?

The more useful question — the one this page is really about — is what the NDIS Quality and Safeguards Commission expects to find in a participant's file, because that is what an audit looks at. The answer is specific, it is written down, and most of what is published about it is either wrong or a paraphrase of a paraphrase.

Everything below is quoted from the instruments themselves, with compilation numbers and dates, so you can check any of it without taking our word for it.

This page describes what the NDIS instruments and the Electronic Transactions Act 1999 (Cth) say, with the operative words quoted so you can check them. It is general information, not legal advice, and it is not a determination that any particular document or signature is valid. Providers with a specific question should get their own advice.

Is a written service agreement actually required?

For most supports, no — and this is the single most commonly misstated fact in this area.

The obligation people are usually thinking of is Practice Standard 20, in the National Disability Insurance Scheme (Provider Registration and Practice Standards) Rules 2018. Here it is in full. Not an extract — the entire standard:

20 Service agreements

Each participant has a clear understanding of the supports they have chosen and how the supports will be provided.

That is the whole of it. One sentence, and it is about the participant's understanding. It does not require a document, it does not require writing, and it does not mention a signature.

There is exactly one place in the NDIS rules where a written service agreement is mandatory, and it is specialist disability accommodation.

The exception: specialist disability accommodation

Section 36 of the National Disability Insurance Scheme (Specialist Disability Accommodation) Rules 2020 is not a documentation guideline. It is a prohibition on delivering the support:

36 Service agreement

(1) A registered provider of supports must not provide specialist disability accommodation to an eligible participant unless:

(a) a written service agreement has been entered into between the registered provider of supports and the eligible participant in relation to the provision of specialist disability accommodation; or

(b) the registered provider of supports:

(i) has worked with the eligible participant to established a written service agreement in relation to the provision of specialist disability accommodation; and

(ii) has provided a copy of the proposed agreement to the eligible participant; and

(iii) provides specialist disability accommodation to the eligible participant in accordance with the terms of the proposed agreement.

Two things worth noticing. The provider "must not provide" the accommodation without it — so this sits alongside the delivery of the support, not alongside the paperwork. And limb (b), the fallback where agreement could not be reached, still requires that a copy of the proposed agreement is provided to the participant. Getting the document to the person is part of the rule in both limbs.

(Subsection (1) is quoted in full and unaltered. The phrase "to established" at (b)(i) is how the provision reads in the registered instrument — we have not corrected it.)

So why does almost every provider sign one anyway?

Because of what an approved quality auditor works from. The Practice Standards say what the outcome is; the National Disability Insurance Scheme (Quality Indicators for NDIS Practice Standards) Guidelines 2018 say what demonstrating it looks like. Indicator 21 sits under Practice Standard 20, and its third paragraph is the one that matters:

(3) Where the service agreement is created in writing, each participant receives a copy of their agreement signed by the participant and the provider. Where this is not practicable, or the participant chooses not to have an agreement, a record is made of the circumstances under which the participant did not receive a copy of their agreement.

Read slowly, that is four separate expectations:

Writing is a choice. "Where the service agreement is created in writing" — conditional. The indicator does not force you into a written agreement outside SDA.

Both parties sign. "signed by the participant and the provider". A participant signature on its own does not meet the indicator. The provider countersigns.

The participant receives a copy. Not "a copy is filed" — received. An agreement signed and stored where the participant never got one misses the indicator even though the signature exists.

Where it doesn't happen, that is recorded. If signing is not practicable, or the participant chooses not to have an agreement, the circumstances are written down. The exception carries its own evidence obligation.

The same three-part pattern — signed by both, copy received, record where not — appears again in Module 5A for supported independent living, at indicator 72E(i). Two separate modules, the same requirement, stated the same way.

This is worth dwelling on because it changes what "done" means. A signature is not the finish line. The finish line is: signed by both parties, a copy in the participant's hands, and a record of what happened either way.

Does the Electronic Transactions Act apply to the NDIS?

Yes, and the reasoning is short enough to check in three steps.

The NDIS Rules are laws of the Commonwealth. They are legislative instruments made under the National Disability Insurance Scheme Act 2013.

The Electronic Transactions Act 1999 (Cth) applies to laws of the Commonwealth. Section 8:

8 Validity of electronic transactions

(1) For the purposes of a law of the Commonwealth, a transaction is not invalid because it took place wholly or partly by means of one or more electronic communications.

And section 10 sets out when an electronic signature satisfies a signature requirement:

10 Signature

(1) If, under a law of the Commonwealth, the signature of a person is required, that requirement is taken to have been met in relation to an electronic communication if:

(a) in all cases—a method is used to identify the person and to indicate the person's intention in respect of the information communicated; and

(b) in all cases—the method used was either:

(i) as reliable as appropriate for the purpose…; or

(ii) proven in fact to have fulfilled the functions described in paragraph (a), by itself or together with further evidence; and

…

(d) …the person to whom the signature is required to be given consents to that requirement being met by way of the use of the method mentioned in paragraph (a).

And the NDIS is not on the exclusion list. Section 7A of the Act lets regulations switch it off for named Commonwealth laws, and Schedule 1 of the Electronic Transactions Regulations 2020 is that list. We searched the current compilation — Compilation No. 7, 1 November 2025 — for "disability", "NDIS" and "National Disability". There are no matches. The Corporations Act is on that list. The Bills of Exchange Act is on that list. The NDIS is not.

That last step is the one nobody else does, and it is the difference between "electronic signatures are legal in Australia" — true but unhelpful — and a statement about your documents specifically.

What makes an electronic signature good enough?

Section 10 is deliberately technology-neutral. There is no approved vendor, no required certificate type, no mandated cryptography. A method qualifies if it identifies the person, shows they intended to sign, and is either reliable enough for the purpose or "proven in fact… together with further evidence."

That last limb is the interesting one for anyone facing an audit, because it is an invitation to keep evidence. A signature on its own is a mark. A signature with a record of who opened the document, when, what they consented to, what they saw, and what they did is a mark you can stand behind two years later when the person who arranged it has left.

In practice that means three things are worth having attached to any NDIS agreement you sign electronically:

• A consent step — section 10(1)(d) makes the signer's consent to the electronic method an element of the provision, so a logged consent step is answering the statute rather than decorating the process.
• An audit trail — the sequence of events, timestamped, in an order that cannot be quietly rearranged afterwards.
• A tamper-evident final document — so the version in the file can be shown to be the version that was signed.

What this looks like in a participant file

Putting the instruments together, a file that satisfies indicator 21(3) shows four things, and they are all documentary:

The third row is the one paper handles worst. A countersigned agreement in a filing cabinet proves the signature. It does not, by itself, show that the participant ever received their copy. When a document is signed through a signing platform, the delivery of the completed copy to every party is part of the same event record as the signatures.

Who signs when the participant doesn't sign personally?

This comes up constantly and it is worth being precise, because two different things get run together.

The NDIS Act provides for nominees. Section 78 says what a plan nominee may do:

78 Actions of plan nominee on behalf of participant

(1) Any act that may be done by a participant under, or for the purposes of, this Act that relates to:

(a) the preparation, variation, reassessment or replacement of the participant's plan; or

(b) the management of the funding for supports under the participant's plan; or

(c) withdrawing as a participant under section 29A;

may be done by the participant's plan nominee…

Note what that provision is about: acts under the Act, concerning the participant's plan and its funding. A service agreement is a contract between the participant and the provider. It is not, on the face of section 78, one of the acts listed there.

Authority for one person to enter a contract on behalf of another ordinarily comes from somewhere else — from the person themselves, from a power of attorney, or from a State or Territory guardianship or administration order. Which of those applies is a question about the individual, and it is not one this page can answer.

What is worth saying generally is that section 80 puts a duty on any nominee to "ascertain the wishes of the participant and to act in a manner that promotes the personal and social wellbeing of the participant" — and that supported decision-making, where the participant signs with support rather than being signed for, is the arrangement the scheme is built around.

Whatever the arrangement, the practical point for the file is the same: it should be clear who signed, in what capacity, and on what basis. A signature block that captures a name and a role, and an event record showing which email address opened and signed the document, answers that question years later. A scanned signature on a printed page usually does not.

The other signature: consent

Service agreements get the attention, but indicator 14, under the information management standard, describes a second document with its own signature expectation:

(1) Each participant's consent is obtained to collect, use and retain their information or to disclose their information (including assessments) to other parties, including details of the purpose of collection, use and disclosure…

(2) Each participant is informed of how their information is stored and used, and when and how each participant can access or correct their information, and withdraw or amend their prior consent.

Two implications. Consent is a distinct record from the service agreement — the file needs both. And because participants must be told how to withdraw or amend consent, consent is not a once-ever event: changing it is a normal thing that happens, and it produces another document.

The matching Practice Standard adds that each participant's information must be "easily accessible to the participant" — which is another way of saying the participant should be able to lay hands on their own copy without asking you for it.

How Siggy handles NDIS agreements

Siggy is Australian-owned and hosted electronic signature software. For NDIS agreements specifically, the parts that matter line up with the indicators rather than with a feature list:

The annual price reset is worth calling out. When rates change, agreements have to be re-agreed across the whole participant list inside the same window. That is one template and one send, not a hundred separate documents.

Templates are available on Professional and above; bulk send is on Business. The free plan is $0 for 5 envelopes a month with no credit card, which is enough to run a real agreement end to end and see what comes back.