NRMA Insurance has been fined $479,500 by the New South Wales regulator after pricing errors led to customers being overcharged on compulsory third-party (CTP) insurance, the green slip required to register a vehicle in NSW. The State Insurance Regulatory Authority (SIRA) imposed eight civil penalties on Insurance Australia Limited, which trades as NRMA Insurance, and the insurer is refunding affected customers.
The address-data error behind the largest overcharge
The most serious of the eight matters involved an address-data error that caused incorrect rating districts to be applied, producing premiums inconsistent with the insurer's approved pricing. SIRA estimated that about 41,564 policies were affected, with customer overcharges totalling $12.17 million.
SIRA described it as the most serious matter for which NRMA Insurance was penalised, citing the substantial affected population, significant estimated customer detriment and failures in core pricing and data controls. The regulator said the departure from the premiums filed with the Authority also affected the integrity of the regulated premium framework.
That matters beyond the individual refunds: CTP premiums in NSW are set within a regulated framework, so an insurer charging outside its filed rates undermines the system the regulator uses to keep green slip pricing consistent across the market.

The other seven matters
Across the eight matters, NRMA Insurance was found to have breached requirements of the Motor Accident Injuries Act 2017, the Motor Accident Guidelines and its insurer licence.
SIRA found the insurer underpaid cancellation refunds by an estimated $118,421. It also failed to apply a discount to eligible customers, resulting in estimated overcharges of almost $662,000, and incorrect risk-state mapping led to estimated overcharges of $70,320.
SIRA said the issues exposed significant weaknesses in NRMA Insurance's pricing, data and system controls, resulting in incorrect premiums, customer overcharges and under-refunds. The regulator noted that NRMA Insurance cooperated throughout the investigation and is undertaking remediation for affected motorists, including refunds for identified overcharges.

Refunds and who is covered
NRMA Insurance is refunding affected customers, but SIRA has not announced a timetable for when those refunds will be paid, and no total refund figure across all eight matters has been published. The penalties cover CTP policies in NSW only; the sources do not indicate any effect on drivers in other states or territories, and no such impact has been announced.
The fine is the latest in a series against the insurer. SIRA previously fined NRMA Insurance $10,000 in December 2024, announcing the penalty in January 2025, for failing to disclose demerit-point loadings on CTP renewal policies and incorrectly applying those loadings. Insurance Australia Limited was also fined $40 million in 2023 over promised loyalty discounts that were not delivered.
IAL sits within Insurance Australia Group, Australia's largest insurer, which also owns 90 per cent of RACQ Insurance among other brands. For green slip buyers, the practical lesson is to check that the district and discount details on a renewal match their circumstances, since the errors here were corrected only after the regulator stepped in.





