Why Your Industry Super Fund Default Investment Option Could Be Costing You Thousands

If you have superannuation in Australia — and the vast majority of working Australians do — there is a very good chance you have never questioned the investment option your money sits in. You joined a fund, the default option was selected for you, and life moved on. It is completely understandable. But it could be one of the most expensive financial oversights of your life.

This article breaks down what is happening inside many of Australia’s largest industry super funds, why the industry super fund default investment option often is not the best choice for members, and what you can do about it.

What is a default super investment option?

When you join a superannuation fund and do not actively choose where your contributions are invested, your money is placed in the fund’s default investment option. For most large industry funds, this is typically a ‘Balanced’ option — a diversified portfolio spread across growth and defensive assets, usually in a ratio of around 70 to 80 percent growth and 20 to 30 percent defensive.

The default is designed to suit the broadest possible range of members. In theory, it is a sensible starting point. In practice, for many members, it is where their money stays for decades without a second thought.

The problem with the default: a real example

Let’s use AustralianSuper, Australia’s largest super fund, to illustrate the issue. Their default Balanced option has returned approximately 6.59% per year over the past five years. That is not a bad result in isolation. But sitting right alongside it, available to every member, is their Index Diversified option.

Over the same five-year period, the Index Diversified option returned approximately 7.28% per year — nearly 0.7% higher annually. And it carries a management fee of just 0.06%, compared to 0.39% for the Balanced option. Transaction costs on the Balanced option run roughly eight times higher than the Index Diversified.

That means members in the default option are paying significantly more in fees and receiving lower returns. A worse outcome on both measures simultaneously.

This is not unique to AustralianSuper. Similar patterns appear when you look at Hostplus, Australian Retirement Trust, and most of the major industry superannuation funds operating in Australia today.

Why does this matter so much?

Superannuation is a long game. Most Australians will have their money invested in super for 40 years or more. Over that kind of time horizon, even seemingly small differences in annual returns and fees compound into staggering amounts.

Consider the impact of 0.7% per year in additional returns, combined with meaningfully lower fees, applied over four decades to a growing super balance. The difference can easily run into tens of thousands of dollars. For many people approaching retirement on the Mornington Peninsula and across Victoria, it could represent hundreds of thousands of dollars — the difference between a comfortable retirement and a constrained one.

This is not an abstract calculation. It is real money that belongs to real members.

Why isn’t the better option the default?

This is the question worth asking — and one that industry super funds have not answered clearly.

One argument is that index-based options carry different risk characteristics and may not suit every member equally. The AustralianSuper Index Diversified option, for example, has a 70/30 growth to defensive split rather than the 75/25 split of the Balanced option, making it arguably slightly more conservative. Different risk profile, different product.

But the performance and fee differential has been consistent not just over five years, but over 10 and 20 years. The evidence is compelling, and many financial professionals believe members deserve a clearer conversation about the options available to them inside their own fund.

What should you actually do?

The first thing to understand is that the right investment option for you depends on your individual circumstances. Your age, how close you are to retirement, your risk tolerance, your other assets, and your broader financial goals all factor into what is appropriate.

If you are in your 30s or 40s, a high growth or high growth index option may actually be more suitable than either of the options discussed here. If you are approaching or in retirement, a more conservative allocation might make sense. There is no universal answer.

What this article is encouraging you to do is this: do not simply accept the default. Log in to your super fund’s member portal and look at the investment options available to you. Compare the returns over 5, 10, and where available, 20 years. Look at the fees. Understand what you are actually in and what else is on offer within the same fund.

The information is there. Most people just have never looked.

When to seek personal advice

If you are unsure what investment option is right for your situation, or if you are getting closer to retirement and want to make sure your superannuation strategy is working as hard as possible for you, speaking with a qualified financial planner is the most sensible step.

A Certified Financial Planner can review your entire financial picture — not just your super investment option — and help you make an informed, personalised decision. This is particularly important for pre-retirees and retirees, where the stakes are highest and the time to recover from poor decisions is shortest.

At Advice Loop, we work with retirees and pre-retirees across the Mornington Peninsula and Melbourne to help them understand their superannuation, optimise their investment strategy, and build a retirement plan that actually reflects their life. We see firsthand how much of a difference a well-chosen super investment option can make to long-term outcomes.

The bottom line

Australia’s superannuation system is genuinely one of the best retirement savings frameworks in the world. But it only works well for you if you engage with it. The industry super fund default investment option is often a reasonable starting point, but for many members it is not the optimal long-term choice — and the evidence from the funds themselves supports that.

Take the time to look at your options. Compare the numbers within your own fund. And if you want help understanding what is right for your situation, reach out to a financial planner who can give you advice based on your actual circumstances.

Your retirement is too important to leave on default.