On 1 December 2017, the Motor Accident Injuries Act 2017 (NSW) came into operation, replacing the long-standing Motor Accidents Compensation Act 1999 (MACA) for accidents occurring on or after that date. The new statute fundamentally restructured the Compulsory Third Party (CTP) scheme, layering a defined-benefits entitlement (available to virtually all injured persons regardless of fault) on top of a narrowed common-law damages track restricted to non-threshold injuries with sufficient permanent impairment.
The reform was driven by what the State Insurance Regulatory Authority (SIRA) and the NSW government characterised as systemic problems in the MACA scheme: disproportionate scheme spend on minor whiplash claims, long lead times to damages settlement, and high legal costs as a percentage of total benefits paid. The plaintiff bar and accident victim advocacy groups argued the reform stripped access to fair common-law damages from a wide swathe of legitimately injured people.
In 2022, amendments dropped the politically charged label “minor injury” in favour of “threshold injury” — a cosmetic change that did not alter the underlying legal effect. The 2017 framework otherwise remains intact and now governs all NSW motor vehicle accident claims, with disputes determined by the Personal Injury Commission established in 2021 to consolidate workers compensation and motor accidents jurisdiction.
All injured persons (including at-fault drivers) receive statutory benefits for up to 26 weeks. Not-at-fault non-threshold claimants continue beyond 26 weeks. Common-law damages are available only for non-threshold injuries; non-economic loss damages additionally require WPI greater than 10%. Disputes are decided by the Personal Injury Commission applying SIRA guidelines.
Before reform: the MACA 1999 regime
The Motor Accidents Compensation Act 1999operated as a fault-based tort scheme with limited statutory accident benefits. Most compensation flowed through common-law damages claims against the at-fault driver's CTP insurer, with entitlement subject to proof of negligence. The 1999 Act introduced a 10% WPI threshold for general damages (non-economic loss) but otherwise left tort entitlements largely intact.
By the mid-2010s, the MACA scheme was widely criticised for slow throughput (median time-to-resolution was several years), high transaction costs, and a heavy concentration of payouts in minor whiplash claims relative to severe injury. SIRA scheme reviews underpinned the case for structural reform.
The MAIA 2017 framework
The MAIA 2017 establishes a hybrid scheme. Part 3 creates statutory benefits — weekly payments, treatment expenses, domestic and commercial attendant care — payable regardless of fault for the first 26 weeks. After 26 weeks, entitlement narrows to claimants who are not mostly at fault and whose injuries are not threshold injuries, with continued benefits up to retirement age subject to step-downs.
Part 4 preserves a common-law damages action against the at- fault driver (insured by the CTP insurer) but restricts it to non-threshold injuries. Non-economic loss damages further require WPI greater than 10%, with the assessment process administered through the Personal Injury Commission.
Statutory benefits
| Benefit | Threshold injury | Non-threshold injury (not at fault) |
|---|---|---|
| Weekly payments (first 13 wk) | 95% of pre-accident weekly earnings | 95% of PAWE |
| Weekly payments (14-78 wk) | 80-85% (capped) | 80-85% (capped) |
| Weekly payments (78-260 wk) | Not available | Continuing, subject to WPI/work capacity |
| Treatment and care | Up to 52 weeks | Reasonable and necessary, ongoing |
| Common-law damages | Not available | Available (NEL requires WPI > 10%) |
Pre-Accident Weekly Earnings (PAWE) is calculated from earnings in the 12 months before the accident. Step-downs at 13, 78, 130, and 260 weeks reduce the percentage payable. Treatment expenses include medical, hospital, rehabilitation, and (where reasonably necessary) home and vehicle modifications.
The threshold injury definition
A threshold injury is defined in section 1.6 of the MAIA as either a soft tissue injury (an injury to tissue connecting, supporting, or surrounding other body structures, including muscles, tendons, ligaments, and menisci, but excluding nerve damage and complete or partial rupture of certain structures) or a minor psychological or psychiatric injury (a psychological or psychiatric injury that is not a recognised psychiatric illness). Specific exclusions — for example, injuries to the spinal nerve roots — operate to elevate the injury above threshold even where the dominant pathology is soft tissue.
Disputes about whether an injury is a threshold injury are medical assessment mattersdetermined by an independent medical assessor under the PIC framework. The assessor's certificate is binding, subject to limited review for procedural fairness or jurisdictional error.
Common-law damages above the threshold
For non-threshold injuries, the claimant may pursue common-law damages against the at-fault driver, recovered from the CTP insurer. Available heads include:
- Past and future economic loss — uncapped, subject to the statutory cap on weekly earnings (currently around AUD $5,500/week, indexed)
- Non-economic loss (general damages) — available only if WPI exceeds 10%; assessed under the SIRA Permanent Impairment Guidelines
- Past and future treatment — to the extent not covered by statutory benefits
- Domestic assistance — for gratuitous care meeting the Griffiths v Kerkemeyer threshold
The interaction between the statutory benefits track and the common-law damages claim is governed by detailed offset and refund rules — broadly, statutory benefits paid are deducted from any subsequent damages award to prevent double recovery.
The Personal Injury Commission
The Personal Injury Commission (PIC), established by the Personal Injury Commission Act 2020 (NSW) and operating from 1 March 2021, consolidated the former Workers Compensation Commission and motor accident dispute resolution into a single tribunal. The PIC decides medical assessment matters, miscellaneous claims assessments (entitlement, contributory negligence, damages quantum where parties cannot settle), and damages claims that proceed to assessment.
PIC decisions are subject to limited judicial review by the NSW Supreme Court on jurisdictional or natural-justice grounds. There is no general appeal on the merits.
Comparison to other Australian schemes
Compared to Victoria's TAC scheme, NSW is more generous on statutory benefits in the early weeks but uses a lower 10% WPI gate for non-economic loss against Victoria's 30% serious-injury test. Compared to Queensland's CTP scheme, NSW is more restrictive on common-law access (Queensland retains a more traditional tort layer with no soft-tissue threshold). Western Australia and South Australia each operate variants with different mixes of catastrophic-injury lifetime care and tort.
Related reading
- The Victoria TAC scheme
- Comparative no-fault schemes
- NSW personal injury overview
- No-fault insurance schemes compared
Frequently asked questions
What is a threshold injury under the NSW MAIA?
Can I claim pain and suffering in NSW?
How long do statutory benefits last?
What happens if I am at fault for the accident?
Who decides disputes under the MAIA?
How is whole person impairment assessed?
What about pre-existing conditions?
How does NSW compare to Victoria and Queensland?
Sources
- Motor Accident Injuries Act 2017 (NSW)
- Motor Accident Injuries Regulation 2020 (NSW)
- Personal Injury Commission Act 2020 (NSW)
- SIRA Motor Accident Permanent Impairment Guidelines (current edition)
- SIRA — annual scheme performance reports
- NSW Government — MAIA 2017 second reading speech and explanatory memorandum
- Personal Injury Commission — published case decisions and procedural directions