How much will groceries cost you in retirement?

New research has revealed Kiwis are underestimating how much it will cost to fill their supermarket trolleys in retirement.

Just 11 per cent of people surveyed by the Commission for Financial Capability correctly estimated a couple would need between $250,000 and $300,000 to pay for basic groceries over a 30 year retirement.

More than 70 per cent believed it would cost less than that.

The research is being highlighted by the commission as part of Money Week which kicks off today.

David Boyle, group manager investor education at the Commission for Financial Capability, said it was hard for people to picture what groceries were going to cost over such a long time frame.

“People know what they are buying on a day to day basis but to look at it over 30 years – it’s just a lot harder to visualise.”

But he said Kiwis were living longer and many could expect to spend 20 to 30 years in retirement.

A man who was 65 years old now could expect to live to an average age of 86 while for women it was 88 but average life expectancies were increasing at a rate of around one year for every five years a person had until age 65.

That could mean a 20 year old female today would live to an average age of 97 leaving them to pay for 32 years in retirement if they stopped working at 65.

But the good news was that people also underestimated how much they could have in KiwiSaver if they started saving at a young age.

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An individual who joins KiwiSaver at the age of 18 and contributes 3 per cent from an average salary of $65,000 through their working lifetime could have between $300,000 to $400,000 by 65.

Of those surveyed 69 per cent believed they would have under $300,000 at retirement with 28 per cent estimating they would save under $100,000.

“KiwiSaver makes it easier for us to save for our futures, the trick is to work out what we need to do to make sure our income lasts as long as we do once we stop working,” Boyle said.

The commission will also launch a new online tool on its money website to help people plan for their retirement this week.

More than 70 public events are planned around the country for Money Week which is now in its fifth year.

This year’s theme is Show Me The Money and looks at how the costs of everyday items can add up over 30 years of retirement.

Check out for events in your area.