Overall online retail sales for the full year rose 6.2 per cent to $17.4 billion.
NAB said sales increased across all retail categories compared with July 2014 except specials on `daily deals’ websites, which fell 25.2 per cent year on year.
Electronic games and toys recorded the highest amount of growth at 19.2 per cent; followed by media items, 13.9 per cent; homewares and appliances, 11.7 per cent; fashion, 8.6 per cent; and personal and recreational goods, 4.3 per cent.
Department and variety stores saw much slower growth than the prior month, reporting 1.9 per cent growth.
Online sales now make up around seven per cent of traditional retail spending.