The superannuation myth that could cost you $100,000 before you retire

There is a retirement decision many Australians make in their 50s and early 60s that feels sensible, cautious, and responsible.

It can also be one of the most expensive mistakes in long-term wealth building.

The idea sounds reasonable enough: as retirement gets closer, shift your super into cash or a conservative option so you can protect what you have built. After all, if markets fall, you have less time to recover.

That is the part that makes the decision feel smart.

The problem is that safety and lower returns often travel together. And over the final stretch before retirement, that trade-off can become far more costly than people expect.

What actually hurts returns

The biggest damage usually does not come from a market fall on its own.

It comes from what happens next.

When investors switch to cash after markets have already fallen, they often lock in the decline. Then, because confidence usually returns slowly, many stay defensive while markets recover. That means they can miss part of the rebound, which is often where a large share of long-term returns is earned.

That is the trap.

Market downturns feel dangerous in the moment. Yet for long-term investors, the bigger risk is often responding emotionally and giving up years of future compounding.

Why the final decade matters so much

One of the most misunderstood parts of retirement planning is how powerful the last 10 years before retirement can be.

By that stage, many people have built meaningful super balances. Even modest percentage returns on a larger base can add up quickly. That means the final decade is not just about preservation. It is still a major growth phase.

For example, a $400,000 super balance growing at 9% a year for 10 years would become roughly $947,000, even without extra contributions.

If that same balance grew at 4% a year instead, it would reach about $592,000.

That is a gap of more than $350,000.

This is why moving to low-growth settings too early can have such a lasting impact. It is not simply about avoiding losses. It is about what you give up in return.

The market downturn can make this decision more dangerous

A falling market often creates the strongest urge to “play it safe”.

That is understandable. Watching your super balance decline can be uncomfortable, especially when retirement no longer feels far away.

Yet this is exactly when a rushed switch can do the most harm.

If markets are already down, moving to cash may protect you from further short-term falls, but it can also leave you stranded if prices recover sooner than expected. And recoveries rarely wait until investors feel calm again.

In other words, the danger is not just volatility. The danger is making a permanent portfolio decision based on a temporary emotional state.

A downturn does not automatically mean your super strategy is wrong. It may simply mean markets are doing what markets have always done from time to time.

What to focus on instead

That does not mean everyone should stay aggressively invested forever.

Your investment mix should reflect your age, expected retirement date, need for income, other assets, and ability to tolerate fluctuations. There is no one-size-fits-all answer.

However, a change this important should be based on your full financial position, not a scary patch in the headlines.

For many Australians, better questions to ask are:

How much growth do I still need?

How long until I start drawing heavily on my super?

Will I retire all at once, or transition gradually?

Do I have cash or other assets outside super that reduce the need to panic?

Those questions are far more useful than simply asking whether cash feels safer today.

Foolish Takeaway

The myth is not that cash is always bad. It is that conservative automatically means safer.

In reality, switching your super to cash or a low-growth option too early can reduce your long-term retirement outcome by far more than many people realise. Not because you made a reckless decision, but because the decision felt prudent at exactly the wrong time.

Super is still a long-term investment vehicle, even as retirement gets closer.

If you are thinking about changing your investment option, make sure the move fits your timeline and broader plan, not just your nerves on a volatile day.

The post The superannuation myth that could cost you $100,000 before you retire appeared first on The Motley Fool Australia.

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Motley Fool contributor Leigh Gant has no position in any of the stocks mentioned. The Motley Fool Australia’s parent company Motley Fool Holdings Inc. has no position in any of the stocks mentioned. The Motley Fool Australia has no position in any of the stocks mentioned. The Motley Fool has a disclosure policy. This article contains general investment advice only (under AFSL 400691). Authorised by Scott Phillips