It offers insurance products, such as car, home and contents, CTP, boat, caravan, travel, business, public liability and workers compensation and life, primarily in the state of New South Wales and the Australian Capital Territory.

[3][4] On 1 July 2001, Suncorp acquired AMP's Australian general insurance interests, including GIO.

On 1 July 2013, as part of a Federal Court of Australia approved internal re-organisation, the Suncorp's Australian general insurance businesses were transferred to one underwriter, AAI Limited.

The insurance policy in this case included provision for all liability incurred by the [insured] in respect of the death or bodily injury to any person caused by or arising out of the use of the motor vehicle.The Court held that "arising out of" allowed for wider and less immediate interpretation of responsibility than the words "caused by".

[6] GIO was naming rights sponsor of Australian Touring Car Championship team Bob Forbes Racing from 1989 until 1993.