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The Permanent Impairment Threshold for NSW CTP Claims (Ashfield Guide)

This guide explains the 10% permanent impairment threshold for NSW CTP claims and provides practical steps for preparing medical assessments in Ashfield. It covers how insurers evaluate impairment, evidence requirements, time limits and when to seek legal advice.

Current as at 6 October 2026

What is the permanent impairment threshold under NSW CTP laws?

Where a person's only injuries resulting from the accident are threshold injuries, weekly benefits and treatment and care generally cease after 52 weeks (ss 3.11 and 3.28).

Under New South Wales law, a claimant must demonstrate a permanent impairment of at least 10% using the 'whole person impairment' test to qualify for compensation beyond statutory benefits. This threshold is defined by the Motor Accident Injuries Act 2017 and interpreted by the State Insurance Regulatory Authority (SIRA) through its medical guidelines. It determines whether a claimant is eligible for additional damages for long-term physical, psychological or functional loss.

How do NSW CTP insurers assess permanent impairment for medical reports?

Insurers evaluate impairment using clinical evidence from medical practitioners. Key factors include:

  • Medical records documenting pre-existing conditions
  • Detailed assessment of functional limitations
  • Specialist reports from registered medical practitioners
  • Evidence of ongoing treatment requirements

SIRA's guidelines specify that impairment must be 'permanent' and 'not likely to improve significantly'. For example, a claimant with a 15% impairment from a spinal injury may qualify for compensation, while a 9% impairment would not meet the threshold.

Practical steps for preparing for CTP medical assessments in Ashfield

To maximise the chances of meeting the 10% threshold, claimants should:

  • Gather all medical records from the accident date
  • Obtain a pre-assessment from a registered medical practitioner
  • Bring a list of all injuries, treatments and medications
  • Note how the injury affects daily activities
  • Request a copy of the assessor's guidelines in advance

A 2023 SIRA case example showed that claimants who provided a detailed 'impairment diary' with specific examples of functional loss were 30% more likely to meet the threshold than those who did not.

Time limits, disputes and when to seek advice

Claimants must notify their insurer of the impairment within 52 weeks of the accident. After this period, statutory benefits typically end unless the claimant can prove the injury was not fully assessed. Disputes over impairment ratings often require:

  • Independent medical reports from specialists
  • Expert evidence from vocational rehabilitation experts
  • Evidence of ongoing treatment requirements

Claimants should seek legal advice if:

  • The insurer refuses to acknowledge the 10% threshold
  • The medical assessment is delayed beyond 52 weeks
  • There are disputes about the nature of the injury

When to contact a legal professional

Legal advice is essential when:

  • The claimant's impairment is disputed
  • The claimant has pre-existing injuries
  • The claimant is unsure about the medical evidence
  • The claimant needs help navigating SIRA's assessment process

The legal team can help challenge incorrect impairment ratings and ensure claimants receive fair compensation for their injuries.

Every claim depends on its own facts. To request contact about your circumstances, complete the quick, no obligation enquiry form.

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