Mortgage vs Super

Helen Ruddy • October 13, 2022

With interest rates on the rise and investment returns increasingly volatile, Australians with cash to spare may be wondering how to make the most of it. If you have a mortgage, should you make extra repayments or would you be better off in the long run boosting your super?

The answer is, it depends. Your personal circumstances, interest rates, tax and the investment outlook all need to be taken into consideration.

What to consider

Some of the things you need to weigh up before committing your hard-earned cash include:

Your age and years to retirement

The closer you are to retirement and the smaller your mortgage, the more sense it makes to prioritise super. Younger people with a big mortgage, dependent children, and decades until they can access their super have more incentive to pay down housing debt, perhaps building up investments outside super they can access if necessary.

Your mortgage interest rate

This will depend on whether you have a fixed or variable rate, but both are on the rise. As a guide, the average variable mortgage interest rate is currently around 4.5 per cent so any money directed to your mortgage earns an effective return of 4.5 per cent. i

When interest rates were at historic lows, you could earn better returns from super and other investments; but with interest rates rising, the pendulum is swinging back towards repaying the mortgage. The earlier in the term of your loan you make extra repayments, the bigger the savings over the life of the loan. The question then is the amount you can save on your mortgage compared to your potential earnings if you invest in super.

Super fund returns

In the 10 years to 30 June 2022, super funds returned 8.1 per cent a year on average but fell 3.3 per cent in the final 12 months. ii  In the short-term, financial markets can be volatile but the longer your investment horizon, the more time there is to ride out market fluctuations. As your money is locked away until you retire, the combination of time, compound interest and concessional tax rates make super an attractive investment for retirement savings.

Tax

Super is a concessionally taxed retirement savings vehicle, with tax on investment earnings of 15 per cent compared with tax at your marginal rate on investments outside super.

Contributions are taxed at 15 per cent going in, but this is likely to be less than your marginal tax rate if you salary sacrifice into super from your pre-tax income. You may even be able to claim a tax deduction for personal contributions you make up to your annual cap. Once you turn 60 and retire, income from super is generally tax free. By comparison, mortgage interest payments are not tax-deductible.

Personal sense of security

For many people there is an enormous sense of relief and security that comes with having a home fully paid for and being debt-free heading into retirement. As mortgage interest payments are not tax deductible for the family home (as opposed to investment properties), younger borrowers are often encouraged to pay off their mortgage as quickly as possible. But for those close to retirement, it may make sense to put extra savings into super and use their super to repay any outstanding mortgage debt after they retire.

These days, more people are entering retirement with mortgage debt. So whatever your age, your decision will also depend on the size of your outstanding home loan and your super balance. If your mortgage is a major burden, or you have other outstanding debts, then debt repayment is likely a priority.

All things considered

As you can see, working out how to get the most out of your savings is rarely simple and the calculations will be different for everyone. The best course of action will ultimately depend on your personal and financial goals.

Buying a home and saving for retirement are both long-term financial commitments that require regular review. If you would like to discuss your overall investment strategy, give us a call.

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By Nikki Ashurst • November 2, 2026
Many Australians don't know how their super fund has performed or what it invests in. Are you one of them? Here's what to check and why it matters. Do you know how your super fund performed over the last two years? Many Australians don’t and are working towards their financial future without fully understanding one of their most important assets and without a clear plan for how their super may support them in retirement. That's not surprising, as many people view super as something that should run quietly in the background while they're busy with careers, families and everything else that life throws at them. But when you’re not sure what’s happening behind your balance, it’s harder to know whether you’re on track, whether your current approach reflects your goals or what opportunities might be available to help you make the most of what you’ve built so far. Your super isn't sitting in an account, it's invested Super is invested by a fund on your behalf across a mix of assets, with those investments working to grow your balance over time. Those include: Shares Ownership in Australian and international publicly listed companies. Their value can rise and fall, sometimes substantially over short periods but shares can provide capital growth over the long term. Property and infrastructure Real assets like office buildings, shopping centres, airports and energy networks. They can produce income and don't always behave in the same way as share markets, helping diversify investment holdings. Fixed interest and bonds Lending to governments and companies in return for interest. They can provide regular income and be steadier than shares, although returns and risk vary depending on the investment. Cash Generally, the most stable and lowest risk investment type. It can provide stability and faster access to money but typically offers lower longer term return potential. The investment option you choose determines the mix of assets held in your super based on your risk appetite. Most super funds offer options from conservative to high growth. If you’re young, a growth option with a higher exposure to growth assets like shares could offer higher returns over time – but it also comes with higher risk. As retirement nears, you might want to consider a more conservative approach with more defensive assets, like bonds for example to protect your savings. If you've never made a choice, you're probably in your fund's default option, which is designed to suit a broad membership. It’s worth knowing whether the mix you're in matches your circumstances and goals, including how far you are from retirement. Why performance alone is not a true comparison If you're thinking about how your super compares, returns are often where people start. The trouble is that a return figure means nothing without context: What it's being compared to Growth and conservative options invest differently and with different levels of risk. Compare like with like or the comparison may not be genuine. The comparison period A single year can be heavily influenced by short term market conditions. Super is measured in decades, so five, seven and ten year returns tell you far more about whether a fund is consistently doing its job, albeit not a predictor of future performance. Fees and tax Published returns should reflect investment fees, costs and tax but administration fees may be charged separately from your balance. Two funds quoting the same return can leave you in meaningfully different places once all fees are accounted for. Then there are the things that returns can't show you at all. For example, what insurance is attached to your account and what it's costing you, whether the fund offers guidance, tools and advice or simply sends a statement once a year. Another consideration maybe the level of support available when you need it. When comparing funds, it's worth looking at the full picture, including performance, fees, investment options, retirement support and member benefits. What today’s decisions mean tomorrow To understand how your super stacks up, start here: Find your investment option It's on your annual statement and in your online account. Look at what's in it Your fund publishes the asset allocation (shares, cash etc.) for each investment option. Check the long-term return for that option Focus on five and ten year returns, not just last year and compare them with equivalent options. Understand the total cost Add together administration fees, investment fees and insurance premiums as an annual dollar figure. Comparing super is about working out which option will perform best for you. Before you jump in, it’s worth understanding what's behind the numbers so you can make decisions based on more than a headline return. Knowing where you stand is the first step A super balance tells you where you are today. Understanding how your super is invested, how it compares and whether it's aligned with your goals helps show whether you're heading in the right direction. Source: MLC The information in this article does not take into account your objectives, needs and circumstances. We recommend that you obtain investment and taxation advice specific to your investment objectives, financial situation and particular needs before making any investment decision or acting on any of the information contained in this document. Subject to law, Capstone Financial Planning nor their directors, employees or authorised representatives gives any representation or warranty as to the reliability, accuracy or completeness of the information; or accepts any responsibility for any person acting, or refraining from acting, on the basis of the information contained in this document. Principal Wealth Management Pty Ltd trading as BMO Financial Solutions ABN 53 109 336 601 is a Corporate Authorised Representative (CAR 277821) of Capstone Financial Planning Pty Ltd ABN 24 093 733 969 Australian Financial Services Licence (AFSL) No. 223135.
By Jude Schofield • October 7, 2026
More Australians are choosing to take direct control of their retirement savings by establishing a self-managed super fund (SMSF) and according to the SMSF Association, Aussies now see their super as an important part of building and managing their overall wealth.