Online sales growth is picking up pace with September numbers showing expansion across most categories, according to the NAB Online Retail Sales Index.
September was 1.1% higher compared to August and 12.8% higher compared to a year ago, the highest rate since March (13.7%).
ABS data showed growth at comparable traditional retailers in August to be 0.4% higher than July and 2.9% higher than a year ago.
Online sales continue to outpace traditional retail but its growth rate has been slowing gradually.
In dollar terms, the NAB estimates Australians spent $15.9 billion on online retail in the 12 months to September 2014.
This is equivalent to 6.7% of spending at traditional bricks and mortar retailers.
Online sales growth expanded in almost all categories in September.
Key growth areas included Homewares and Appliances (35.8% annual) and Electronic Games and Toys (35.1%), along with improved growth in Groceries and Liquor (12.1%), and Department Stores (11.3%).
More moderate growth was seen in Fashion (6.6%) and Media (4%). Both Personal and Recreational goods (-1.2%) and Daily Deals again contracted (-9.2%).