There’s a number on your super statement that most people skip right past. It’s not your balance, not your return, not your employer contribution. It’s the fee line. And over the course of your working life, that one number might matter more than all the others combined.

Let’s make it real. Take two people, both 30 years old, both with $50,000 in super. One pays 1% in annual fees. The other pays 2.5%. That’s a difference of $750 a year on a $50,000 balance. Hardly seems worth worrying about.

Fast-forward to age 65. The person paying 1% retires with roughly $336,000. The person paying 2.5% retires with $255,000. That’s $81,000 less — not because they earned less, not because the market was worse, but because their fund charged more.

And the gap only gets wider at higher balances. If you’ve got $500,000 in super and you’re paying 1.5% instead of 0.75%, you’ll end up with $92,700 less at retirement. That’s a year and a half of living expenses, vanished into fees.

Here’s what makes it insidious: you never see a bill. There’s no invoice. The fee just gets deducted before your return is reported. So when your fund tells you “we returned 8% this year,” what they actually mean is “we returned 8% after we took our cut.” You never see the gross number. You never see what you’re missing.

At our practice, we use Dimensional and Vanguard funds specifically because their total cost sits around 0.78%. That’s in the lowest quartile of the industry. We’re not chasing the cheapest option at all costs — we’re choosing funds where the evidence shows the fee structure doesn’t drag on long-term outcomes.

The one thing you can absolutely control in investing is what you pay. You can’t control the market. You can’t control inflation. But you can control your costs.

The Australian government has tried to help. The Your Future, Your Super reforms put pressure on underperforming funds, and the annual performance test has already forced several high-fee funds to close or merge. But the onus is still on you to check.

Three things you can do right now: Log into your super fund’s website. Find the fee section. Write down the total annual cost as a percentage of your balance. If it’s above 1%, it’s worth a conversation. If it’s above 1.5%, it’s urgent.

Your super fund’s job is to grow your money. Not to quietly shrink it.