Australians have $18bn in 'lost' super Australians are missing out on more than $18 billion in "lost" superannuation sitting in unused accounts across the country, a survey says. Forty-seven per cent of Australians are likely to have superannuation sitting in old accounts, the survey from Westpac said. It found 38 per cent of Australian consumers don't know whether they have lost super, while 57 per cent have never searched for it. "Lost" superannuation are contributions sitting in dormant accounts and accounts set up by a previous employer, Westpac says. It said there was currently $18.1 billion worth of lost super in accounts across the country. The ACT has the most lost super per person ($2912), followed by the Northern Territory ($2845) and Western Australia ($2731), the bank said. Tasmania has the least lost super per person at $2412. Westpac head of superannuation, Deanne Stewart, said Australians needed to stay on top of the issue. "Superannuation is a subject that most people tend to avoid, particularly when it comes to lost super, where Australians seem to be disengaged," she said in a statement.