Mortgage, Super or Investing: Where Should Your Extra Money Go in Your 30s and 40s?
You’ve got a bit of money left over this month.
Not enough to change your life. Just enough to make you wonder whether you’re doing the right thing with it.
Do you put it on the mortgage? Start investing more seriously? Add extra to super?
This is one of those financial questions that can actually get harder as you get older.
When money is tight, the priority is often obvious. But by your late 30s or 40s, you may have a decent income, some equity in the house, super ticking along and finally a bit of surplus cash flow.
Now you don’t have one good option; you have several, and I think that’s where a lot of people get stuck.
So where should your extra money go?
There isn’t one destination that automatically comes first. In your 30s, paying down the mortgage may deserve a lot of your attention. As you move through your 40s, investing and longer-term wealth creation can become more important. Super may deserve more attention too. The right balance depends on your debt, cash flow, timeframe and, most importantly, what you’re trying to make possible with the money.
That last part is the one I’d pay attention to.
Because the real question isn’t simply whether the mortgage, investing or super is best.
It’s what job you need your money to do next.
I explored this in an episode of the Financial Autonomy podcast about how our financial priorities change through different stages of life. The decade-by-decade framework is useful, but the bigger idea is that a strategy can still be perfectly sensible and no longer be the right strategy for you. You can listen below.
Should paying off your mortgage be the priority in your 30s?
For many people, the mortgage takes up a lot of financial attention in their 30s.
It can be a decade where several big costs arrive at once. You may have bought a home relatively recently, be dealing with a larger mortgage than you had earlier in life, or simply be at a stage where living costs have increased faster than your sense of financial progress. For others, there may also be career changes, travel, starting a business, parental leave or childcare in the mix.
So even if your income has increased, it doesn’t necessarily feel as though there’s suddenly a huge amount of money available to invest.
Reducing a mortgage is one option people often consider during this stage because extra repayments reduce the interest charged on the loan. But that doesn’t mean the mortgage automatically has to absorb every spare dollar until it reaches zero.
As your income, debt and goals change, it can be worth looking again at what else that money could be doing.
Do you need to pay off your mortgage before you start investing?
There’s no rule saying the mortgage has to disappear before investing gets a look in.
Think about how much can change between 33 and 43.
In your early 30s, you may have recently taken on a larger mortgage and have very little genuinely spare cash. Directing much of that surplus towards the home loan may be one option that makes sense at the time.
Ten years later, the picture could be quite different. Your income, mortgage balance, expenses and goals may all have changed, and you may have more choices about where spare money goes.
If every extra dollar is still automatically heading to the mortgage simply because that’s what you’ve always done, it can be useful to reconsider the bigger picture.
Not because paying down the mortgage has become a bad strategy.
Because there may now be more than one reasonable option for that money.
That changes the question.
Instead of:
How quickly can I get rid of the mortgage?
it becomes:
What does my next dollar need to do for me?
Are you still using the financial strategy that suited you at 33?
I see this fairly often.
People establish good financial habits in their 30s. They pay the mortgage, contribute to super, build some savings and generally keep things moving in the right direction.
Then life moves on.
Their income changes, their mortgage changes and their family changes, but the strategy doesn’t.
They’re still doing what made sense ten years earlier because nothing has forced them to stop and reconsider it.
From the outside, everything can look like it’s on track.
The mortgage is falling, super is growing and there may even be some investments.
But there’s a difference between doing sensible financial things and having those things working together towards something.
That’s where your 40s can become really important.
What should you focus on financially in your 40s?
I think your 40s can be one of the most useful wealth-building windows you get.
For many people, income is stronger than it was a decade earlier. There may be meaningful equity in the home. And there’s still plenty of time for decisions made now to have an impact.
But I don’t think the big opportunity is simply to invest more.
It’s to get more deliberate about what you’re doing.
By now, you might have a mortgage, super, savings, investments and surplus cash flow.
Each part can look perfectly fine on its own.
The harder question is whether they’re all pulling in the same direction.
Because mortgage, investing and super aren’t really three separate decisions.
They’re three different places the same dollar could go.
Should your next dollar go to the mortgage, investments or super?
All three can be sensible.
Put an extra $1,000 towards the mortgage and you reduce debt and future interest.
Invest it outside super and you’re building wealth that may be available before retirement.
Put it into super and there can be tax advantages, but you’re also accepting restrictions around when that money can be accessed.
So once you’ve reached the point where all three are realistic options, asking which one is best? isn’t particularly helpful.
The more useful question is:
What combination makes sense for what I’m trying to achieve?
That’s where two people who look almost identical on paper can end up with very different answers.
They might both be 42 and they might earn the same salary.
But one wants to stop working at 55 and the other enjoys their career and expects to keep going well into their 60s.
And one wants to help their kids buy property, the other wants enough money outside super to take a year away from work.
Same age and same income, but they need their money to be doing completely different things.
This is where generic advice starts running out
I can explain the trade-offs between paying down the mortgage, investing and super in an article like this.
What I can’t tell you is what mix makes sense with your income, debt, tax position, existing assets and the future you’re trying to create.
That’s exactly the work we do in Wealth Builder.
We look at the pieces together and work out what deserves your attention now, rather than treating the mortgage, super and investments as separate problems.
How do you work out what you should focus on next?
Work out what you want first. The money question gets easier after that.
Most of us do it the other way around. You look at what came in, subtract what went out, and then wonder what to do with whatever's left. That's fine while there's one obvious answer. It falls apart the minute you've got three reasonable options and no way to pick between them.
So the question I'd start with isn't where should this money go.
It's what do you want a Tuesday to look like when you're 60?
Some people answer that straight away. They want to stop at 58. They want to drop to four days once the youngest finishes school. They want to sell up and move somewhere with a bit of land and a decent shed.
Plenty of people have no idea. That's fine, and it isn't a character flaw. It's a question most of us are never asked.
But it's worth sitting with, because nobody actually wants a super balance. They want whatever they think the balance will buy them. Usually that turns out to be time, or not having to think about money every time something breaks, or being able to say yes when one of the kids needs a hand with a deposit. Or just the option to walk away from work earlier, or stay because you want to rather than because you have to.
Once you know what you're aiming at, the money side gets a lot less philosophical. You stop asking whether investing beats paying down the mortgage in general terms, and start asking which one gets you there faster.
What if you feel like you should be further ahead by now?
This is often the question underneath the mortgage versus investing debate.
People don’t usually come to see me saying:
I’d like to optimise the allocation of my surplus cash flow.
They say:
We earn pretty good money. I just feel like we should be further ahead.
Or:
We’re doing all the right things, but I’m not sure where it’s actually taking us.
That doesn’t necessarily mean you’re behind.
You may already have a lot going for you.
Equity in the house. Super. A good income. Savings. Maybe some investments.
What may be missing isn’t another financial product or another hack.
It may simply be a plan for how those pieces work together.
And that’s a much more useful problem to solve.
When does financial advice start becoming useful?
I think one of the clearest signs is when your question changes from:
How do I save more?
to:
What should I do with the money I can now save?
You don’t need to wait until you have a huge investment portfolio.
And you certainly don’t need to wait until retirement is around the corner.
In fact, your 30s and 40s can be a valuable time to get the strategy right because there is still time for the decisions you make to compound.
The goal isn’t to make your finances more complicated.
It’s the opposite.
It’s to know what each part of your money is there to do.
So should you pay off the mortgage, invest or put more into super?
Your age gives you a useful starting point.
In your 30s, the mortgage may deserve a lot of attention.
As you move through your 40s, investing, super and longer-term wealth creation are likely to become a bigger part of the conversation.
But I wouldn’t let your birthday make the decision.
The better question is:
Given where I am now and where I want to get to, what should my next dollar be doing?
Because the strategy that was right for you ten years ago may still be a perfectly good strategy.
Your life may simply have moved on.
Want to know what your next dollar should actually be doing?
There’s plenty of information online about mortgages.
There’s plenty about investing.
And there’s no shortage of information about super.
What a generic article can’t tell you is how much of your money should go towards each one.
That depends on your income, debt, super, investments, tax position, timeframe and what you want the next ten or twenty years to look like.
That’s what we work through in Wealth Builder.
Wealth Builder is our 12-month financial advice program for people in their 30s and 40s who are earning well, have done many of the financial basics and want a clear plan for what comes next.
We look at your mortgage, investments, super and cash flow together, then build a personalised strategy around your actual position and the life you want to create.
So instead of wondering whether every spare dollar should disappear into the mortgage, go into the sharemarket or head towards super, you know what each part of your money is there to do.
This article is for educational purposes only and does not take into account your individual circumstances. If you would like tailored advice, we can help you work through the numbers properly.
