You have done the sensible thing. The mortgage is nearly gone, there is a decent sum in the bank, and you have deliberately kept it somewhere it cannot fall over. The balance on the statement never goes backwards. That feels like safety — and for money you need in the next year or two, it is.
But if you are in your forties or fifties and that money has to carry you through another thirty or forty years, "it never goes backwards" is only half the story. The number on the statement holds still. What that number buys does not.
What inflation quietly does to a retirement pot
The Consumer Price Index (CPI) is the Australian Bureau of Statistics measure of how much prices change. In the twelve months to the September quarter 2026 it rose 4.3%, with the biggest contributors being housing, up 5.2%, and transport, up 8.7% on the back of higher fuel prices. The underlying measure the Reserve Bank watches most closely, the trimmed mean, was running at 3.6%.
Numbers like that sound small. Spread over a retirement, they are not. Compounding works just as relentlessly against you as it works for you.
Suppose you expect to spend $60,000 a year once you stop working. At 3% inflation — below where we are now — you would need about $80,600 a year to buy the same life in ten years, and about $125,600 a year to buy it in twenty-five. Nothing about your lifestyle has improved. The same groceries, the same power bill, the same car registration simply cost more than twice as much.
That is the real risk most people over 45 are carrying, and it is far quieter than a market crash. A crash is on the news. Inflation just shows up at the checkout.
Why cash can feel safe and still go backwards
Here is the arithmetic that surprises people. The Reserve Bank's cash rate target has been 4.60% since 30 September 2026, and deposit accounts are generally priced at or below it. Say you have $200,000 earning 4.6%. That is $9,200 of interest for the year.
Interest is fully taxable. If you are still working and in the 30% tax bracket — which, for the 2026-27 year, covers taxable income from $45,001 to $135,000 — you will pay 30% plus the 2% Medicare levy on that interest. Tax of about $2,944 leaves you roughly $6,256, or 3.1% after tax.
Now take inflation off. At 4.3%, the purchasing power of that $200,000 fell by about $8,600 over the same year. You earned $6,256 and lost $8,600. You are about $2,300 behind, despite the balance going up and nothing ever appearing to go wrong.
Repeat that for a decade and the damage is real money. Cash protects you from a bad year. It does not protect you from a bad decade.
The part of your income that is already inflation-proofed
It is not all bad news, and this is the piece most people overlook when they worry about prices.
The age pension is indexed. Services Australia adjusts the rates every 20 March and 20 September, so the payment is designed to keep pace with living costs rather than fall behind them. The current maximum is $1,178.70 a fortnight for a single person and $1,777.00 a fortnight for a couple combined, including the pension and energy supplements. That is roughly $30,600 and $46,200 a year respectively.
If you will qualify for a full or part age pension, a meaningful slice of your retirement income already rises with prices automatically. The question then becomes narrower and much easier to answer: how do you protect the part of your income that comes from your own savings?
What "growing" actually means when you are ten to twenty years out
You do not have to choose between a term deposit and a white-knuckle ride. Most sensible retirement plans split the money up by when it is needed.
Money you will spend in the next two or three years belongs somewhere stable. You do not want to be selling shares in a falling market to pay for a new hot water system. Money you will not touch for ten years or more has time to recover from the bad years, and that is the money that needs to grow faster than prices. The rest sits in between.
For a 52-year-old, most of their super is long-term money, even though it rarely feels that way. The balance you will draw on at 80 has nearly thirty years to work. Parking all of it in the most conservative option available locks in the slow loss described above at the exact point in life when you can still afford to ride out a rough patch.
For scale, the Association of Superannuation Funds of Australia estimates a homeowner needs around $630,000 as a single, or $730,000 as a couple, to fund a comfortable retirement — figures it last revised in February 2026. Getting there generally takes growth, not just saving.
If you are behind, or if markets make you nervous
Plenty of people reading this are not sitting on $200,000. If you are starting later with less, inflation matters more, not less, because there is less margin for the money to go backwards.
Three honest things to keep an eye on. First, the gap between what your money earns after tax and what prices are doing — if that gap is negative year after year, nothing else you do will fix it. Second, the fees on your super fund, because a fee is a guaranteed loss in a way that a market fall is not. Third, your own temperament: an investment mix you abandon in the first bad quarter is worse than a slightly more conservative one you can actually stick with.
And if a market fall would genuinely force you to change your plans within the next couple of years, that is a signal to hold more cash, not less. The point is not that growth assets are always right. It is that "safe" deserves a harder look than most of us give it.
If you would like this set out properly — how much you will need, how to turn super into an income, and how to make it last — Retirement Made Simple (6th Edition) by Noel Whittaker walks through it step by step, updated for the current financial year. It is $19.95, available in PDF and EPUB, and you can buy direct from the author.
This article is general information only and doesn't take account of your personal circumstances. Figures are current at time of writing and change each financial year. Consider seeking advice before acting.