A third of people don't know what type of fund their KiwiSaver money is in, according to a survey by the country's largest provider.

ANZ Bank, which looks after around a 25 per cent share of the $16.5 billion savings scheme, surveyed 1041 people aged 15-64 years between August and October as part of its quarterly Retirement Savings Confidence Barometer.

It found that 33 per cent did not know whether their money was in a conservative, balanced or growth fund. Conservative funds have more money in cash and fixed interest investments while growth funds are tilted towards property and share investments which tend to perform better over the longer term.

Five per cent said they intended to live entirely on New Zealand Superannuation which currently pays $357.42 for a single living alone and $549.88 for a couple.