If your NDIS plan mentions behaviour support, you may see two very different documents attached to it: an Interim Positive Behaviour Support Plan and a Comprehensive Positive Behaviour Support Plan. They are not interchangeable and they are not two versions of the same thing done twice. An interim plan is a short, practical starting point that gives immediate strategies while a full assessment is still underway, whereas a comprehensive plan is built on a completed Functional Behaviour Assessment (FBA) and sets out a long-term, evidence-based approach. Understanding which one applies to your situation — and when the second should follow the first — helps families and Support Coordinators plan funding, timelines and expectations with far less guesswork.
Key Takeaways
- An interim plan is a stopgap, not a finished assessment. It offers immediate, practical strategies before the full picture is understood.
- A comprehensive plan is built on a completed Functional Behaviour Assessment (FBA). It explains the function of the behaviour, not just how to respond to it.
- Both can involve restrictive practices, but only a comprehensive plan can properly justify and work towards reducing them.
- Timeframes for each are set by the practitioner and the participant’s circumstances, not by EVSS as a blanket rule — always confirm current timeframes with your practitioner or Support Coordinator.
- Whether you need one, the other, or both depends on urgency, complexity and what your NDIS plan funds — this is a clinical decision, not a paperwork formality.
What is an Interim Positive Behaviour Support Plan?
An Interim Positive Behaviour Support Plan is a short-term document a behaviour support practitioner puts in place when a participant needs strategies now, but the full assessment process hasn’t been completed yet. It’s common when a situation is urgent — a new referral, a recent escalation in behaviours of concern, or a family and support team who need something practical to work from immediately rather than waiting weeks for a full clinical picture.
An interim plan is deliberately limited in scope. It typically draws on early observations, information from family, carers or support workers, and any records already available, rather than the structured data-gathering that underpins a full assessment. It sets out reasonable strategies to try in the meantime — proactive approaches, environmental adjustments, and guidance for carers and support workers on how to respond consistently. If you’re weighing up what a behaviour support plan actually covers, an interim plan is best understood as the practical bridge, not the destination.
Because it isn’t grounded in a completed FBA, an interim plan is not intended to be the long-term answer. It’s a working document that a practitioner will review and build on as more information comes in.
What is a Comprehensive Positive Behaviour Support Plan?
A Comprehensive Positive Behaviour Support Plan is the fuller, evidence-based document that follows a completed Functional Behaviour Assessment. The FBA looks at what’s actually driving a behaviour of concern — what happens before it, what happens after it, and what function it serves for the person — rather than just describing the behaviour itself. The comprehensive plan is built directly on those findings.
This means a comprehensive plan can set out proactive strategies matched to the actual function of the behaviour, teach replacement skills that meet the same underlying need in a safer way, and — where restrictive practices are part of a person’s current supports — work towards reducing or eliminating their use over time. It’s a considerably more detailed document than an interim plan, and it’s meant to guide support consistently across home, school, community and other settings. For families wanting the fuller picture of what this process involves, our guide on what a behaviour support practitioner does explains how a practitioner moves from assessment through to plan development.
If you’d like to talk through which pathway fits your situation, our team at Empowering Voices Support Services is on 1300 094 527, Monday to Sunday, 9am–5pm, or you can start a referral directly through our referral page.
Call 1300 094 527 Referral page
Interim vs comprehensive behaviour support plan: the key differences
Put side by side, the interim vs comprehensive behaviour support plan comparison comes down to timing, depth and purpose. An interim plan exists because someone needs support strategies before the clinical picture is complete. A comprehensive plan exists because the clinical picture is complete, and the strategies can now be properly matched to why the behaviour is happening.
An interim plan is built on available information and early observation. A comprehensive plan is built on a completed FBA — structured, evidence-based assessment of triggers, function and context. An interim plan offers general, reasonable strategies to reduce immediate risk. A comprehensive plan offers a tailored strategy set, including skill-building and, where relevant, a genuine restrictive practice reduction pathway. An interim plan is a temporary document intended to be superseded. A comprehensive plan is the plan a support team works from on an ongoing basis, reviewed and updated as circumstances change.
Where restrictive practices are involved, this distinction matters beyond day-to-day support. Reporting, authorisation and safeguarding requirements around restrictive practices sit with the NDIS Quality and Safeguards Commission and relevant state authorisation processes — EVSS’s role is to develop the plan itself, not to determine those separate regulatory obligations. If restrictive practices are part of your situation, it’s worth confirming current requirements directly with your Support Coordinator or the Commission.
An interim plan buys time to respond safely; a comprehensive plan explains why the behaviour is happening in the first place.
When each plan applies
An interim plan is typically the starting point when there’s urgency — a new referral where support can’t wait, a recent change in behaviours of concern, or a gap while a full assessment is being scheduled and completed. It gives carers and support workers something concrete to follow while the deeper assessment work happens in parallel.
A comprehensive plan follows once the Functional Behaviour Assessment is complete. In many cases, that means a person moves from an interim plan to a comprehensive plan as part of one continuous process, rather than starting again from scratch. Whether an interim plan is needed at all, and how quickly a comprehensive plan can follow, depends on the individual’s circumstances, the complexity of the presenting behaviours, and the practitioner’s clinical judgement — this isn’t something that can be reduced to a fixed timeframe applied to everyone. If you’re trying to work out whether your situation calls for one plan or a staged approach through both, our article on who needs a behaviour support plan is a useful starting point.
What this means for funding and your NDIS plan
Whether interim and comprehensive behaviour support work is funded, and how much, is determined by NDIS plan funding and the participant’s approved supports — not by EVSS. Support Coordinators and families are best placed to check current funded hours and categories directly with the NDIA or their plan manager before support begins, since funding rules and individual plan allocations can differ from person to person.
What EVSS can offer is clarity on the process itself: what an interim plan involves, what a comprehensive plan involves, and how our positive behaviour support practitioners work with a participant, their family and their broader support team through both stages. If you’re newer to how NDIS behaviour support fits together more broadly, who positive behaviour support is for is a good companion read.
If you’re not sure whether your current plan supports an interim assessment, a full FBA, or both, that’s a conversation worth having early — with your Support Coordinator, or directly with our team.
Frequently Asked Questions
Do I always need an interim plan before a comprehensive plan?
Not necessarily. Some participants move straight to a comprehensive assessment if there’s no immediate urgency requiring interim strategies. Whether an interim plan is needed first depends on the individual situation and is a decision your practitioner will make with you.
How long does an interim plan stay in place?
This depends on the participant’s circumstances and the practitioner’s clinical judgement, rather than a fixed rule that applies to everyone. Your practitioner or Support Coordinator can confirm the expected timeframe for your specific situation.
What is a Functional Behaviour Assessment (FBA)?
An FBA is the structured assessment process a practitioner uses to understand what’s triggering a behaviour of concern and what function it serves for the person, rather than just describing the behaviour itself. It’s the foundation a Comprehensive Positive Behaviour Support Plan is built on.
Can a comprehensive plan help reduce restrictive practices?
A comprehensive plan, grounded in a completed FBA, can work towards reducing or eliminating restrictive practices over time as part of its strategies. Separate reporting and authorisation requirements around restrictive practices sit with the NDIS Quality and Safeguards Commission and relevant state processes.
Who decides whether I need behaviour support at all?
That’s a clinical decision made in consultation with a qualified behaviour support practitioner, alongside the participant, their family and often their Support Coordinator. EVSS can explain the process and provide the assessment and planning, but funding eligibility and plan approval sit with the NDIA.
Does EVSS deliver behaviour support across all of Sydney?
EVSS currently delivers behaviour support, along with occupational therapy, speech therapy and early childhood intervention, across Penrith, Blacktown, Campbelltown and The Hills, with coverage in surrounding areas. Contact us to confirm coverage for your specific location.
Making sense of interim and comprehensive plans together
The interim vs comprehensive behaviour support plan question isn’t really about picking one over the other — for many participants, it’s about understanding how the two work together as stages in the same process. An interim plan responds to what’s needed right now. A comprehensive plan, built on a completed FBA, addresses why the behaviour is happening and sets a longer-term direction for support.
Getting this sequence right matters, because strategies that aren’t grounded in a proper understanding of the behaviour’s function tend to manage symptoms rather than genuinely support the person. That’s why the assessment stage isn’t a formality to rush through — it’s what makes the comprehensive plan actually useful.
If you’re a family member, carer or Support Coordinator trying to work out where your participant currently sits in this process, or what the next step should look like, our behaviour support team can talk through the options with you.
To discuss an interim or comprehensive plan for someone in your care, reach Empowering Voices Support Services on 1300 094 527, Monday to Sunday, 9am–5pm, or begin a referral via our referral page.
Call 1300 094 527 Referral page