Banks are complaining that a tax break for bank deposits is too complex and unlikely to trigger a meaningful change in saving habits.
In July, the government introduced a 50 per cent tax discount on interest earnings of up to $500, a measure it says will benefit up to 5.7 million Australians and support bank funding.
The policy goes part of the way to implementing the Henry review's call for a 40 per cent cut in taxes changed on interest - which is taxed at the top rate paid by a taxpayer.