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How SIRA Assesses NSW CTP Claims: A Practical Guide to Understanding the Rules

SIRA assesses NSW CTP claims based on injury severity, medical evidence, and legal definitions. Understanding threshold injuries, weekly benefits, and required documentation helps injured road users prepare their case. Contact the enquiry form for tailored advice.

Current as at 19 June 2026

How SIRA Assesses NSW CTP Claims

If you've been injured in a motor vehicle accident in New South Wales, the New South Wales Compensation Authority (SIRA) determines your entitlements under the Compulsory Third Party (CTP) scheme. SIRA uses specific guidelines to evaluate claims, focusing on injury severity, medical evidence, and legal definitions. Understanding these rules helps injured road users prepare their case.

Key SIRA Guidelines for Assessing Claims

SIRA assesses claims based on the Motor Accident Guidelines and the Motor Accident Injuries Act 2017. Key factors include:

  • Threshold injuries: SIRA defines threshold injuries as soft tissue injuries with neurological signs, such as spinal nerve-root injuries. A spinal nerve-root injury producing neurological signs (other than radiculopathy) may still qualify as a threshold injury. Radiculopathy requires specific clinical signs under the guidelines.
  • Whole person impairment: For claims involving long-term or permanent impairment, SIRA uses the whole person impairment (WPI) assessment. This involves a medical practitioner’s report detailing the injury’s impact on daily life.
  • Weekly income payments: If your injury prevents you from working, SIRA calculates weekly income payments based on your pre-accident earnings. This applies only if your injury meets the threshold injury definition.
  • Treatment and care benefits: SIRA covers reasonable medical treatment costs, including physiotherapy, specialist consultations, and medications. Documentation of treatment plans and invoices is essential.

Evidence Required to Support a CTP Claim

SIRA requires specific evidence to support your claim. Key documents include:

  • Medical records: Detailed reports from medical practitioners confirming your injury and its link to the accident.
  • Accident report: A report from the police or a registered witness describing the incident.
  • Witness statements: Statements from witnesses confirming the accident’s circumstances.
  • Income records: Proof of your pre-accident earnings to calculate weekly income payments.
  • Insurance correspondence: Copies of all communication with the at-fault driver’s insurer.

Time Limits and Dispute Options

You have 52 weeks from the accident date to claim weekly benefits for threshold injuries. After this period, benefits are generally limited unless your injury meets the whole person impairment threshold. If your claim is disputed, you may:

  • Request a review by SIRA.
  • Seek independent medical opinion to challenge the assessment.
  • Consult a legal professional to explore further options.

When to Seek Legal Advice

SIRA’s guidelines are complex, and claimants may struggle to meet all requirements. For example, if your injury involves a spinal nerve-root injury without radiculopathy, you must provide clinical evidence to satisfy the threshold injury definition. A legal professional can help you:

  • Navigate SIRA’s assessment criteria.
  • Challenge a disputed claim.
  • Ensure all required documentation is submitted.

Example: Soft Tissue Injury Assessment

Consider a scenario where a pedestrian sustains a soft tissue injury after being hit by a car. SIRA would assess whether the injury meets the threshold injury definition. If the injury involves a spinal nerve-root injury with neurological signs (e.g., tingling or numbness), it may qualify for benefits. However, if the injury lacks clinical signs, it may not meet the threshold, and benefits could be limited.

Next Steps

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

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