Bespoke Legal Group Comments on the New NDIS Funding Determinations
The new NDIS funding determinations introduce a legally and administratively complex framework involving prescribed funding reductions, excluded support subgroups, four subclasses of participant plans and a limited safeguard for certain participants requiring continuous 24-hour disability support.
Bespoke Legal Group considers that the practical consequences of these changes will depend not only on a participant’s disability-related support needs, but also on historical plan information, funding-management arrangements, payment records and the accuracy of data held by the National Disability Insurance Agency (NDIA).
The interaction between the legislative instruments and individual decisions made by the NDIA will require close scrutiny as the new framework is implemented.
Excluded Supports Must Be Considered Individually
The exclusions prescribed by the National Disability Insurance Scheme (Support) Determination 2026 are legally significant. Participants, families, nominees and providers should not assume that every support within an affected funding category will automatically be subject to the applicable percentage reduction.
The effect of the Determination on an individual participant will depend on matters including:
the composition of the participant’s funding;
the individual supports funded under the participant’s current and previous plans;
whether particular supports fall within an excluded subgroup;
how amounts allocated to those supports have been identified; and
the accuracy and completeness of the information recorded by the NDIA.
The headline funding category will not necessarily determine the outcome. It will be necessary to examine the particular support items included in the participant’s plan and the way those items have been recorded and classified.
Bespoke Legal Group comments
The exclusions are a critical part of the new framework. A support should not be treated as subject to a reduction merely because it appears within an affected headline category.
The correct treatment of a participant’s funding will require an examination of the particular supports funded, the applicable exclusions and the records relied upon by the NDIA.
Four Plan Subclasses Add Substantial Complexity
The creation of four separate plan subclasses illustrates the practical complexity of the Support Determination.
The classification of a participant’s plan may depend on more than the participant’s current support needs. Relevant considerations may include:
when the participant’s current plan commenced;
when the source plan commenced;
whether the current plan was made afresh or renewed;
how the relevant funding was managed during 2026;
whether payments were made for particular supports during 2026;
whether amounts were allocated to an excluded subgroup; and
what the NDIA’s records disclose about those matters.
A source plan is the earlier plan from which a renewed plan is derived. The commencement date and contents of that plan may materially affect how the participant’s current plan is treated under the Determination.
Participants should be given sufficient information to understand:
which subclass the NDIA considers applicable;
why that subclass has been selected;
which plan has been treated as the source plan;
which records were relied upon;
which supports have been assigned to an excluded subgroup; and
how the amount attributable to that subgroup was calculated.
Bespoke Legal Group comments
Classification under the Determination should be transparent and capable of verification. Participants should not be expected to infer their subclass from the resulting funding amount.
The NDIA should clearly identify the factual findings, plan history and payment records relied upon when classifying a plan and determining the amount attributable to an excluded subgroup.
The High-Support-Needs Safeguard Is Narrowly Defined
The high-support-needs mechanism established by the National Disability Insurance Scheme (High Support Needs Participants) Determination 2026 provides an important safeguard for certain participants requiring continuous 24-hour disability support.
However, the mechanism is subject to tightly defined eligibility requirements. Access may depend substantially on whether the NDIA’s records show that:
the participant was funded for continuous 24-hour care;
funding was allocated across the specified support groups; and
the applicable monetary threshold was met.
The existence of a participant’s substantial or complex support needs may not, by itself, establish eligibility. The legislative criteria and the NDIA’s records of how the supports were funded will be central to the assessment.
Bespoke Legal Group comments
The high-support-needs pathway is an important protection, but it is not a general hardship mechanism. Its application depends on satisfaction of the specific statutory criteria.
Where eligibility turns on what is recorded in the NDIA’s systems, inaccurate or incomplete historical information may have direct consequences for a participant’s access to the safeguard.
The Variation Methodology Requires Greater Transparency
The methodology for calculating a high-support-needs plan variation is highly technical. It depends on a series of calculations involving matters such as:
historical funded hours;
the reduction in available support hours;
applicable NDIS pricing amounts;
the participant’s daytime supports;
the relevant support item;
support ratios; and
the resulting daily variation amount.
Participants, families, carers and nominees should receive a clear and meaningful explanation of how the methodology has been applied in their particular case. That explanation should identify the source data, assumptions, pricing amounts, ratios and individual calculations used to determine the final variation.
The Determination does not, of itself, make clear whether these calculations will be completed by individual decision-makers, automated systems or a combination of both. If automated or system-assisted processes are used, procedural transparency will be especially important.
At a minimum, affected participants should be informed:
whether automated or system-assisted decision-making was used;
what information was entered into the calculation;
the source of that information;
what assumptions were applied;
how each stage of the methodology was completed; and
how an apparent data or calculation error may be corrected.
Bespoke Legal Group comments
Participants should not be required to reverse-engineer a complex statutory calculation to understand why their funding has changed.
A data-dependent methodology creates several possible sources of error, including inaccurate NDIA records, incorrect factual assumptions, human error and the incorrect operation of an automated process.
The consequences are particularly serious where an error affects funding for a participant who requires continuous 24-hour support. Transparent implementation, effective quality assurance and accessible correction processes will be essential.
NDIA Record Accuracy May Determine Substantive Outcomes
Under the new framework, the accuracy of NDIA records is not merely an administrative concern. It may directly affect:
the subclass assigned to a participant’s plan;
the identification of a source plan;
the treatment of particular supports;
the amount attributed to an excluded subgroup;
eligibility for the high-support-needs mechanism; and
the calculation of any plan variation.
Participants should begin reviewing relevant records well before a plan reassessment. Obtaining historical information, reconciling payment records and correcting inaccurate data may take considerable time.
A participant should maintain a clear written record showing:
what information was held by the NDIA;
which information was inaccurate, incomplete or out of date;
when correction was requested;
what supporting evidence was provided;
whether the NDIA accepted or rejected the requested correction; and
whether the corrected information was considered when the relevant decision was made.
Relevant supporting material may include current and previous plans, plan-management statements, provider invoices, payment histories, service agreements, rosters of care, support-worker timesheets and medical or allied-health reports.
Bespoke Legal Group comments
Participants should not wait until a reassessment decision has been made before investigating the accuracy of the records on which that decision may depend.
A clear documentary history will be important where there is a dispute about plan classification, excluded supports, historical funding arrangements or eligibility under the high-support-needs provisions.
Review Rights Will Be a Central Legal Issue
Review rights are likely to be among the most significant legal issues arising from the new arrangements.
Participants will need sufficient information to determine:
what decision has been made;
how their plan has been classified;
whether an exclusion was applied;
whether the high-support-needs provisions were considered;
what records and calculations were relied upon; and
whether the resulting decision is capable of review.
A critical distinction must be drawn between:
a challenge to the validity, interpretation or legal operation of a legislative instrument; and
a challenge to an individual administrative decision made by the NDIA when applying that instrument.
The available review mechanism may differ depending on the nature of the dispute. For example, a dispute may concern:
the accuracy of personal information held by the NDIA;
the classification of a support;
the subclass assigned to a plan;
a finding about the relevant source plan;
the calculation of an excluded amount;
eligibility for the high-support-needs safeguard;
the calculation of a plan variation; or
the legal effect of the Determination itself.
Participants will therefore need clear reasons identifying the statutory basis of the decision, the relevant findings of fact and the calculation applied.
Bespoke Legal Group comments
Meaningful review rights depend on participants being able to identify what was decided and why. A participant cannot effectively scrutinise or challenge a decision if the NDIA does not disclose the classification, source data, assumptions and calculations that produced the outcome.
It will be essential to distinguish between the operation of the legislative instrument and the individual administrative steps taken by the NDIA when implementing it.
Potential Effect on Social and Community Participation
A central concern is the effect that substantial funding reductions may have on participants who rely on social and community participation supports to maintain:
independence and personal autonomy;
relationships and informal support networks;
access to community activities;
participation in education or employment-related activities; and
connection with the broader community.
The practical consequences cannot be assessed solely by reference to the percentage reduction. The effect on each participant will depend on the composition of their plan, the supports treated as excluded, the applicable subclass, the accuracy of the NDIA’s records and whether any safeguard or variation mechanism applies.
Key Questions for Affected Participants
The principal legal and factual questions arising under the new framework include:
How was the applicable percentage reduction calculated?
Which supports were treated as subject to the reduction?
Which supports were included within an excluded subgroup?
How was the amount attributable to the excluded subgroup determined?
Which subclass was assigned to the participant’s plan, and why?
Which earlier plan was treated as the source plan?
Were the participant’s historical funding and payment records accurately recorded?
Does the participant satisfy the high-support-needs criteria?
How was any plan-variation amount calculated?
Were automated or system-assisted processes used?
What reasons and supporting records have been provided?
Which individual decisions are capable of review?
Conclusion
The new NDIS funding determinations create a framework in which historical plan information, funding-management arrangements and NDIA records may materially affect a participant’s funding outcome.
Bespoke Legal Group considers that transparency, record accuracy and access to intelligible reasons will be fundamental to the lawful and fair operation of the new arrangements. Participants should be able to understand how their plan has been classified, which supports have been included or excluded, how any reduction or variation has been calculated and what mechanisms are available to correct or challenge an erroneous decision.
The relationship between the legislative instruments, NDIA records and individual administrative decisions will require careful examination as the first reassessments, variations and review decisions under the new framework emerge.
This article provides general information about the legislative framework as at 6 October 2026. It does not address the circumstances of any particular participant or plan. Its content is current at the date of publication. It is not legal advice and is not tailored to meet your individual needs. You should obtain specialist advice based on your specific circumstances before taking any action concerning the matters discussed in this article
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