The ATO has advised that it has obtained data that identifies credit and debit card sales made by Australian businesses in the 2011-12 financial year from various banks including: Commonwealth Bank of Australia; St George Bank; American Express Australia Limited; Diners Club Australia; Westpac Banking Corporation; Australia and New Zealand Banking Group Limited; National Australia Bank Limited; and Bendigo and Adelaide Bank Limited. The ATO said the data will be matched against taxpayer records to identify those taxpayers who deliberately under-report or omit income.