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- This another of my go-to charts I use when helping advisers explain the importance of inflation and asset allocation to clients.
- Inflation is the largest destroyer of wealth for investors – even greater than fraud, theft, fees, active management, and taxes, but it often receives the least attention.
- Past generations of retirees didn’t need to worry about inflation or asset allocation because retirement lasted only a few short years.
- But for today’s investors and retirees facing several decades in retirement, inflation protection and asset allocation are now critical.
- Even with central banks' so-called 'low' inflation targets - we will still lose HALF of our wealth and spending power due to inflation during retirement.
- Worse still, if inflation over the next few decades is like it was in the last few ‘low-inflation’ decades, then we will lose up to TWO THIRDS of our wealth and spending power due to inflation.
In my last article, I looked at the destructive effects of inflation in Australia - through different inflationary eras, and from different starting points in the past. See -
That illustrated that even in the so-called ‘low’ inflation 2000s and 2010s inflation still managed to destroy one third to one half of the value of our money.
Today’s story looks at the future impacts on wealth and incomes at different average rates of inflation.
Even at very low levels, inflation is still a big destroyer of wealth and living standards over time. It is the power of compounding in reverse. Even low annual inflation compounds into massive destruction of wealth over time.
Long-term investors must always be vigilant and protect their wealth and incomes from inflation, not just in times of ‘high’ inflation.
Today’s chart shows the impact of inflation on the future purchasing power of money over time, at different rates of inflation.
Obviously the higher the rate of inflation, the greater the destruction of real purchasing power of money – the steeper the downward curve from the starting point.

However, what is not as obvious is the fact that even so-called ‘low’ inflation rates still have very serious destructive effects on the purchasing power of money over time.
RBA’s inflation targets are still very destructive
Even if future inflation in Australia can be contained within the RBA’s target range of 2-3% per year on average, your money will still lose half of its purchasing power over 30 years (highlighted in the red box) if we don’t invest in assets that at least keep pace with inflation.
The power of Compounding in reverse
The second key lesson from this chart is that the longer we need the money to last, the more of it is eaten away by inflation, and therefore the more important it is to invest in ‘growth’ assets that offer some inflation protection.
Previous generations didn’t need to worry about inflation – But we do!
In previous generations, time in retirement was relatively short. Most ‘bread-winners’ had working lives of 40 years or more (from their late teens to retirement in their 50s and even early 60s). For them, ‘retirement’ was usually only for half a dozen years or so, if that. Inflation, and even high inflation, did not have much time to work its destructive damage on their savings, and most people lived off the age pension, which was indexed to inflation.
Times have changed. These days a large proportion of the population live well into their 90s, or even past 100, and life expectancy is increasing even further with advances in medicine and nutrition. Retirement funds now need to last several decades, and so it is much more important that the funds are invested in growth assets to keep pace with inflation for several decades.
Asset allocation, and investing in assets that can at least keep pace with inflation is more important than it has ever been in the past.
‘Growth’ -v- ‘Defensive’ assets
There are many types of assets used in long term investment portfolios, but they fall into two main groups – ‘Growth’ and ‘Defensive’ assets.
The main types of ‘growth’ assets are equity (ownership) interests in businesses (eg in the form shares in listed or unlisted companies), or real estate (residential, commercial offices, retail shops, etc). A diversified mix of companies can often offer a decent hedge against inflation, and are able to achieve revenues, profits, dividends, and capital values rising with inflation, and often ahead of inflation.
In the case of property, well located and managed properties (especially a diversified mix) can also see their rents and capital values rise with inflation, depending on their location, supply & demand for tenants, etc. The main downside with ‘growth’ assets is that the income (dividends, rent), and also their capital values, can suffer big falls in business/credit cycles, especially in broad economic recessions.
‘Defensive’ = Debt
On the other hand, ‘defensive’ assets are essentially debts lent to different types of borrowers:
- debt funds lent to governments (in the form of treasury bonds, notes, and bills),
- debt funds lent to businesses (corporate bonds, notes),
- debt funds lent to banks (bank deposits, bills, notes, hybrids), and
- debt funds lent to property owners and developers (mortgages, debentures). Most ‘private credit’ funds are non-bank lenders lending mainly to property developers that can't get loans from the banks.
In essence, with ‘defensive assets’ you are a lender, and your ‘asset’ is a debt owed by a borrower, but with ‘growth assets’ you are a part-owner of the business or property.
(There are also many other types of assets and products with all sorts of fancy labels, but their underlying assets are just combinations of ‘equity’ or ‘debt’ interests outlined above, hidden behind complex structures, and usually riddled with extra layers of fees, leverage, derivatives, and counterparty risks.)
‘Defensive’ assets are most exposed to value destruction via inflation
These ‘defensive’ (debt) assets have traditionally been favourites with retirees because they offer the advantages of regular, relatively reliable income (until one day it unilaterally cuts repayments or stops paying altogether), and usually relatively stable capital values (until one day it suddenly ‘freezes’ and you can’t get your money back).
Another downside of ‘defensive’ (debt) investments is that their returns are almost always entirely in the form of fully taxable interest income.
The biggest downside of ‘defensive’ (debt) investments is that the repayments and capital values have no protection from the inflation decay illustrated on the above chart. People investing for periods of more than a few years (which includes almost all retirees) still need high quality, diversified ‘growth’ assets (equity/ownership interests) in their portfolios to have the best chance of withstanding the wealth-destroying effects of inflation.
For the impact of inflation on wealth and incomes in Australia over the long term, see:
Inflation has a huge impact on portfolio returns and investor outcomes. See -
My latest webinar for IFPA (Institute for Financial Professionals Australia) – which always features the latest on inflation and interest rates -
‘Till next time – safe, inflation-beating investing!