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How Insurers Assess Liability Under the Motor Accident Injuries Act 2017 in NSW

Insurers in NSW assess liability under the Motor Accident Injuries Act 2017 by evaluating fault, injury severity, and evidence. Claimants should seek medical attention, report accidents, and document injuries. Legal advice may be needed if insurers dispute liability or refuse benefits. Complete the enquiry form to discuss your case.

Current as at 19 June 2026

How Insurers Assess Liability Under the Motor Accident Injuries Act 2017 in NSW

Insurers in New South Wales assess liability for motor accident claims under the Motor Accident Injuries Act 2017 (MAIA) by determining fault and applying statutory guidelines. This process involves evaluating evidence, comparing injuries to SIRA’s injury severity thresholds, and considering the circumstances of the accident. In Greater Sydney, insurers typically rely on the MAIA’s framework to decide whether a claimant is entitled to benefits like weekly payments, treatment costs, or lump sum damages.

Legal Framework for Liability Assessment

The MAIA governs statutory benefits for injuries caused by motor vehicles. Insurers must assess liability by determining whether the accident involved a motor vehicle and whether the claimant’s injuries meet the legal definition of a 'threshold injury' or higher. Under the MAIA, liability is not solely based on who was at fault but also on whether the injury qualifies for benefits. For example, a claimant must demonstrate that their injury meets the spinal nerve-root criteria outlined in the Motor Accident Guidelines to qualify for certain benefits.

SIRA (State Insurance Regulatory Authority) provides authoritative guidelines for insurers to assess injuries and benefits. These guidelines define what constitutes a 'threshold injury' and outline the minimum requirements for claiming weekly payments or treatment costs. Insurers use these guidelines to ensure consistency in assessing claims, particularly for soft tissue injuries like whiplash.

Key Evidence Insurers Consider

Insurers evaluate several types of evidence to determine liability, including:

  • Accident reports from police or traffic authorities.
  • Witness statements and statements from the claimant.
  • Medical records showing the nature and severity of injuries.
  • Photographs of the accident scene and vehicle damage.
  • Income records to assess the impact of the injury on the claimant’s earnings.

For example, if a pedestrian was hit at a crosswalk, insurers would consider whether the driver was speeding, whether traffic signals were functioning, and whether the pedestrian followed road rules. Medical evidence would also be critical to determine if the injury meets the threshold for benefits.

Time Limits and Dispute Resolution

Claims under the MAIA must be made within specific time frames. For instance, weekly benefits are generally limited to 52 weeks unless the claimant has a whole person impairment rating of 10% or more. Insurers must also consider whether the claimant’s injuries are the 'only injuries' resulting from the accident, as this affects the type and duration of benefits.

If an insurer disputes liability, claimants may need to escalate the matter to SIRA or the NSW Civil and Administrative Tribunal (NCAT). Insurers are required to provide written reasons for their decisions, and claimants have the right to challenge these decisions through formal review processes.

Practical Steps for Claimants

To support a claim, injured persons should:

  1. Seek immediate medical attention to document injuries.
  2. Report the accident to the police and obtain a report.
  3. Notify the insurer of the claim as soon as possible.
  4. Keep detailed records of all medical treatments, expenses, and correspondence.
  5. Consult a legal professional if the insurer disputes liability or refuses to pay benefits.

When to Seek Legal Advice

Insurers may delay or dispute claims, especially if the injury is minor or the claimant’s evidence is incomplete. Legal advice can help claimants understand their rights under the MAIA, challenge incorrect liability assessments, and ensure they receive all available benefits. In cases where the injury involves long-term disability or significant financial impact, independent legal review is particularly valuable.

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

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