Understand PBS

Interim vs Comprehensive Behaviour Support Plans

An interim behaviour support plan and a comprehensive behaviour support plan are two stages of the same process. An interim plan puts safe, sensible strategies in place quickly when there's an immediate need, while a comprehensive plan follows a fuller assessment and reflects a deeper understanding of the person.

Both are developed by a behaviour support practitioner under the NDIS, and many participants begin with an interim plan and progress to a comprehensive one as more is learned. The aim throughout is the same: to improve quality of life and reduce the need for behaviours of concern.

Who this is for

Participants, families, and support coordinators who want to understand the difference between an interim and a comprehensive behaviour support plan and how the two fit together.

  1. 1 Interim plan
  2. 2 Comprehensive plan
Many participants begin with an interim plan for immediate needs and move to a comprehensive plan as the assessment deepens.

What an interim behaviour support plan is

An interim behaviour support plan is a shorter, faster plan put in place when there's an immediate need, particularly where there's a risk to the participant or the people around them. Rather than waiting for a full assessment to be completed, it sets out safe, evidence-informed strategies that can be used straight away.

An interim plan draws on what's already known about the person: information from family, support workers, existing reports, and early conversations with the practitioner. It is practical by design: enough to keep people safe and steady the situation while the deeper work of a comprehensive assessment gets under way.

  • Developed relatively quickly when there's an immediate or urgent need
  • Based on information already available, not a completed full assessment
  • Focuses on safety and clear, usable response strategies
  • Documents any restrictive practices already in use, with a plan to review them
  • Acts as a bridge to the comprehensive plan

What a comprehensive behaviour support plan is

A comprehensive behaviour support plan is developed after a fuller assessment, usually including a functional behaviour assessment that looks closely at what happens before and after a behaviour, what the behaviour seems to be communicating, and the conditions that make it more or less likely.

Because it rests on a deeper understanding of the person, a comprehensive plan can go beyond keeping things safe in the moment. It sets out proactive strategies to improve quality of life, build skills and communication, and adjust the environment, alongside clear response strategies for when behaviours do occur. It is reviewed and adjusted over time as circumstances change.

  • Built on a functional behaviour assessment and broader information gathering
  • Includes proactive, preventative, and response strategies
  • Aims to improve quality of life, not only to manage incidents
  • Sets out a clear plan to reduce and remove any restrictive practices
  • Reviewed and updated over time as things change

How they compare at a glance

The simplest way to think about it: an interim plan is about acting safely now with what's known, and a comprehensive plan is about understanding deeply and planning for the longer term. They're not competing options. They're two points on the same path.

An interim plan tends to be developed quickly and is narrower in scope, leaning on existing information and focusing on immediate safety. A comprehensive plan takes longer to develop because it follows a fuller assessment, and it is broader, covering prevention, skill-building, environment, and review as well as response.

  • Timing: interim is put in place quickly; comprehensive follows a fuller assessment
  • Basis: interim uses existing information; comprehensive is built on a functional assessment
  • Scope: interim is focused on immediate safety; comprehensive is broader and longer-term
  • Both are written by a behaviour support practitioner and meant to be used every day
Interim and comprehensive behaviour support plans at a glance
FeatureInterim planComprehensive plan
When it's usedWhen there's an immediate or urgent need and it isn't safe to waitOnce a fuller assessment can be completed
What it's based onInformation already available: family, support workers, existing reports, early conversationsA functional behaviour assessment and broader information gathering
Typical detailFocused and practical: safety and clear response strategiesBroader, covering proactive, preventative, and response strategies plus skill-building
Timeframe framingDeveloped relatively quickly to steady the situationTakes longer because it follows a fuller assessment
ReviewA bridge to the comprehensive plan; reviewed as understanding growsReviewed and updated over time as circumstances change

How participants move from interim to comprehensive

In practice, the two plans often work in sequence. When something needs to change right away, a practitioner can develop an interim plan so the participant and their team aren't left without guidance. In the background, the practitioner gathers information, observes, and talks with the people who know the person well.

As that understanding builds, the interim plan is replaced by a comprehensive plan that reflects what's been learned. The exact timeframe depends on the person, their situation, and how quickly information can be gathered. There's no single fixed schedule. The goal is simply to make sure the person is supported safely from day one while the fuller picture comes together.

Frequently asked questions

What is the main difference between an interim and a comprehensive plan?

An interim plan is developed quickly to put safe strategies in place when there's an immediate need, based on what's already known. A comprehensive plan follows a fuller assessment, including a functional behaviour assessment, and reflects a deeper understanding of the person. It is broader in scope and reviewed over time.

Do you always need an interim plan first?

Not always. An interim plan is most useful when there's an immediate or urgent need and it isn't safe to wait for a full assessment. Where there's no immediate risk, a practitioner may move straight into the assessment that leads to a comprehensive plan. Your practitioner can advise what fits the situation.

How long does it take to move from an interim to a comprehensive plan?

It varies. The time depends on the person, their circumstances, and how quickly information can be gathered through assessment and observation, so there's no single fixed timeframe. The interim plan keeps the participant supported safely while the comprehensive plan is developed.

Are restrictive practices covered in both kinds of plan?

Yes. If restrictive practices are being used, they should be documented in whichever plan is current, along with a clear goal of reducing and ultimately removing them. Reducing the use of restrictive practices is a central aim of behaviour support throughout the process.

Who develops these plans?

Both interim and comprehensive behaviour support plans are written by behaviour support practitioners considered suitable by the NDIS Quality and Safeguards Commission. The practitioner works closely with the participant, their family, and their support team so the plan reflects real life.

Sources

Last reviewed June 2026.

Not sure which plan you need?

Whether there's an immediate need for an interim plan or you're ready for a full assessment, we can talk through what fits the situation and what happens next. No pressure, just a clear conversation.

We aim to respond within about one business day.