Register For Our Mailing List

Register to receive our free weekly newsletter including editorials.

Home / 86

Set yourself to benefit from compounding

Recently I wrote that a person aged 25 and earning $35,000 a year may accumulate $4 million in superannuation at age 65 just by relying on the employer compulsory contribution.

This resulted a flood of emails asking if I had made a mistake in the calculations as the outcome seemed too good to be true.

There was no mistake – it was just compound interest doing its work. To put it simply, how much you will have at the end of a given period depends on the time the money is invested and the rate you can achieve. If the term is short, the rate matters little, but as time lengthens it matters enormously.

To get an estimate of how much a 25-year-old could expect at age 65 we need to make certain assumptions. They are the rate of growth of salary, inflation, and a reasonable earning rate. In the example, I assumed inflation was 3% per annum, wages growth was 4% per annum, and the rate of return was inflation plus 7% (historically reasonable but perhaps a tad optimistic now). This gives a nominal return of 10% per annum. I also assumed the employer contribution would rise to 12% by 2020.

An important step for understanding the buying power of the $4 million is to convert those future dollars to today’s dollars. If inflation was 3% per annum, $4 million in 40 years would have a value of just $1,212,000 in today’s dollars. Yes, still a hefty sum, but doesn't sound nearly as much as $4 million.

Massive impact of term and earning rate

The big lesson here is the way the rate and the duration of the investment dramatically affect the end balance. Suppose a person invested $1,000 a month towards their retirement. If they started at 25 they would have $6.3 million at age 65 if they could achieve 10% per annum. However, the final sum would be just $2 million if they only achieved 6% per annum.

If a person waited until they were 45 to start the programme, and still managed to invest $1,000 a month they may have $760,000 at 10% and $462,000 at 6%. Because the term is much shorter the lower earning rate does not have such a dramatic effect.

The importance of getting the best return on your superannuation is particularly important now that employer contributions are not going to increase as fast as originally planned.  Recently the media have been focusing on the effect a reduction in the employer contribution would have on their final balance, but it’s small bikkies in the scheme of things. For a person earning $80,000 a year the net employer contribution after the 15% entry tax would be $6,460 at 9.5% of salary and $8,160 at 12% of salary. The difference is just $1700 a year.

Engage with your super early

I regularly receive emails from young people whose superannuation is all in the capital stable or balanced area. This is inappropriate for anybody under 50. To make matters worse the majority of SMSFs have no exposure to international funds at all. Obviously the trustees have never bothered to check out funds like Magellan (Global Fund) and Platinum (International Fund), which have strong track records of delivering good returns.

A major finding of the Cooper Review into superannuation was that 80% of Australians were ‘disengaged with their super’. If you find yourselves in that 80%, my advice to you is to start to get engaged. You've just seen how a small difference in the rate of return or starting earlier can make a huge difference to the amount you will have when you retire.

 

Noel Whittaker is the author of Making Money Made Simple and numerous other books on personal finance. His advice is general in nature and readers should seek their own professional advice before making any financial decisions. His website is www.noelwhittaker.com.au.

 

  •   31 October 2014
  • 1
  •      
  •   
1 Comments
Ramani
October 31, 2014

That humanity needs to be reminded time and again about compound interest is a telling commentary on our collective ability to ignore the basics. Like gravity, compounding works its impact in an agnostic way - just as Noel points out the merits of compounding when you are a saver, the downside when you are a borrower and allow interest to accumulate is equally relentless. The disengaged, the negligent, the downright careless and the unfortunates fallen on hard times find this to their personal and family cost.

We have successfully transformed our inability into extreme forms of reaction, including pejoratives such as 'usury'.

On the practical side, deposit-takers and lenders have arrogated to themselves the mathematical consequences of compounding: thus a five year compounded deposit boasts of a stellar equivalent simple interest rate achieved, forgetting that each interest instalment has also been deposited till residual maturity. Equally, the interest 'saved' by borrower by increasing the frequency of repayment is often advertised almost as if the lender is doing a favour. It would help to remember that the ultimate saving of interest is achieved by making the principal or duration zero: don't borrow, or repay on the date of borrowing!

Something many find revealing is compound growth is more natural than simple rate of growth. If we accept that something will grow by a set percentage at a defined frequency, it must follow that the new growth will also grow likewise. Simple rate of growth denies further growth to the new offshoot, and is hence artificial. Think of a small plant, and this will dawn on us.

 

Leave a Comment:

RELATED ARTICLES

Let’s talk more about compounding and the Rule of 72

Survival is the only success

A steady road to getting rich

banner

Most viewed in recent weeks

Testamentary trusts post-budget: Estate planning, tax reform and the ‘death tax’ debate

Proposed Budget changes to taxation are casting new uncertainty over testamentary trusts, prompting closer scrutiny of estate planning structures and the real implications of reforms still taking shape.

High quality businesses are on sale

Beneath the dominance of the ASX's largest stocks, much of the market has been left behind. High-quality companies are now trading at levels rarely seen, offering opportunities for investors willing to look deeper.

Meg on SMSFs: The CGT changes don’t impact super but what about Div 296 tax decisions?

New CGT rules could tip the scales in the super vs non-super debate. For those facing the Division 296 tax, the case for withdrawing has gotten more complex. A "comparison rate" tool may help assess decisions.

The strange effect of the 30% minimum capital gains tax

The 30% minimum tax on capital gains sits at the heart of the budget's proposed reforms. Yet the mechanics reveal anomalies that introduce unexpected distortions that raise questions about its design.

Ranking three common retirement strategies

The defining challenge of retirement isn't just about building wealth, it's about converting your lifetime savings into sustainable income. A holistic understanding of different strategies can improve long-term outcomes.

Welcome to Firstlinks Edition 667 with weekend update

The downfall of the giant and three lessons for investors.

  • 18 June 2026

Latest Updates

Planning

Does your will qualify for the discretionary testamentary trust exemption?

Treasury has confirmed the exemption many families were hoping for. But buried in the fine print are two conditions that could leave some wills on the wrong side of the exemption, despite years of careful planning.

Lithium's latest drop and what it means for ASX investors

Lithium's latest sell-off has punished ASX miners as prices remain hostage to shifting expectations. The key challenge is navigating a market prone to extreme volatility despite a strong case for the long-term demand outlook.

Investment strategies

CGT reform and fund turnover: who really feels the impact?

The implications of CGT reform are far and wide. As the 50% discount gives way to inflation indexation, turnover and return profiles may become critical drivers of after-tax performance. Some strategies face a far greater hit.

Superannuation

Super was built for a very different Australia

Our retirement system was built around assumptions that no longer hold. Lower homeownership, longer lifespans and changing expectations are exposing cracks that policymakers and super funds need to address.

Retirement

Retirement in reality - 4 months in

Many people spend years planning financially for retirement but little time preparing for what comes next. Four months in, here are the surprising lessons I've learnt on finding purpose, social connection and healthy habits.

Investment strategies

After the Budget, Australia needs its own definition of quality

As tax reforms reshape investment incentives, investors should rethink what quality investing means in the uniquely concentrated Australian market, where traditional frameworks may not translate as effectively.

Datacenters are the new shale oil

Why are tech giants pouring billions into datacentres when the economics look questionable? The most dangerous words in investing may be: "everyone else is doing it". Today's AI boom has striking parallels with the shale bust.

Sponsors

Alliances

© 2026 Morningstar, Inc. All rights reserved.

Disclaimer
The data, research and opinions provided here are for information purposes; are not an offer to buy or sell a security; and are not warranted to be correct, complete or accurate. Morningstar, its affiliates, and third-party content providers are not responsible for any investment decisions, damages or losses resulting from, or related to, the data and analyses or their use. To the extent any content is general advice, it has been prepared for clients of Morningstar Australasia Pty Ltd (ABN: 95 090 665 544, AFSL: 240892), without reference to your financial objectives, situation or needs. For more information refer to our Financial Services Guide. You should consider the advice in light of these matters and if applicable, the relevant Product Disclosure Statement before making any decision to invest. Past performance does not necessarily indicate a financial product’s future performance. To obtain advice tailored to your situation, contact a professional financial adviser. Articles are current as at date of publication.
This website contains information and opinions provided by third parties. Inclusion of this information does not necessarily represent Morningstar’s positions, strategies or opinions and should not be considered an endorsement by Morningstar.