Legal Advice

Permanent Impairment Threshold in NSW CTP Claims: How It Affects Eligibility

Under NSW law, a 10% whole person impairment threshold determines eligibility for certain CTP benefits. Medical assessments evaluate whether an injury meets this standard, and claims for compensation must meet specific criteria. Injured road users should seek medical attention, document their injuries, and consult a solicitor if they have questions about their eligibility.

Current as at 19 June 2026

Permanent Impairment Threshold and NSW CTP Scheme Eligibility

Under New South Wales law, a claimant must suffer a permanent impairment of at least 10% whole person impairment (WPI) to qualify for certain benefits under the Compulsory Third Party (CTP) scheme. This threshold determines whether a person is eligible for compensation for injuries sustained in a motor vehicle accident. The Motor Accident Injuries Act 2017 (MAIA) and SIRA guidelines define how medical assessments evaluate whether an injury meets this standard.

How Medical Assessments Determine Eligibility

To assess whether an injury meets the 10% WPI threshold, a medical practitioner must evaluate the long-term impact of the injury. This involves:

  • Reviewing clinical evidence such as imaging, test results, and treatment records
  • Assessing functional limitations affecting daily activities
  • Applying the Motor Accident Guidelines, which outline specific criteria for different impairments
  • Providing a written report detailing the percentage of whole person impairment

The assessment must demonstrate that the injury will have a lasting effect, not just a temporary condition. For example, a broken arm that heals fully without lasting impact would not meet the threshold, but a spinal injury causing chronic pain and mobility issues might.

What Happens if an Injury Doesn't Meet the Threshold?

If a claimant's injury does not meet the 10% WPI threshold, they may still be eligible for certain benefits under the CTP scheme. These include:

  • Treatment and care benefits for injuries requiring medical attention
  • Weekly income payments for time lost from work
  • Rehabilitation support to help return to work

However, they would not be eligible for compensation for permanent impairment or loss of income. Claims for these benefits must be made within 52 weeks of the accident, as specified in the MAIA.

Practical Steps for Claimants

To support a CTP claim, injured road users should:

  • Seek immediate medical attention to document the injury
  • Keep all medical records, treatment plans, and correspondence
  • Obtain a formal impairment assessment from a registered medical practitioner
  • Notify the at-fault driver's insurer within 52 weeks of the accident

Claims for compensation for permanent impairment must meet the 10% WPI threshold, while other benefits are available for a wider range of injuries.

When to Seek Legal Advice

The rules around the 10% WPI threshold can be complex, especially when combined with other factors such as:

  • Multiple injuries from a single accident
  • Injuries that do not immediately meet the threshold but may worsen over time
  • Claims involving both CTP benefits and workers' compensation

Legal advice should be sought if there are disputes about the medical assessment, if the claimant is unsure about their eligibility, or if the insurer is refusing to pay benefits. A solicitor can help ensure all claim requirements are met and that the claimant understands their rights under the CTP scheme.

Next Steps

CTP entitlements depend on the date of the accident, the nature of the injury, and the evidence provided. To request contact about your circumstances, complete the quick, no obligation enquiry form.

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