Should I pay down my mortgage or buy shares today?

Let's compare the pair.

You’re reading a free article with opinions that may differ from The Motley Fool’s Premium Investing Services. Become a Motley Fool member today to get instant access to our top analyst recommendations, in-depth research, investing resources, and more. Learn More

Australians looking to improve their financial position may be wondering where to spend their hard-earned dollars.

Two viable options are to pay down the mortgage or buy shares.

Woman looking at paper bill and counting expenses.

Image source: Getty Images

Mortgage vs shares

During the pandemic, average mortgage rates in Australia reached record lows, with many lenders offering loans as low as 2%. During this environment, it made little sense to pay down the mortgage as quickly as possible. 

However, mortgage rates have risen substantially over the past few years. According to Money.com, the average mortgage rate for owner-occupiers in Australia is around 6.42% per annum. While this is far above pandemic levels, it is roughly in line with the long-term average. 

In February, the Reserve Bank of Australia (RBA) began cutting the cash rate. With inflation continuing to moderate and growth expected to slow, major banks are tipping that more interest rate cuts are on the horizon. For example, Commonwealth Bank of Australia (ASX: CBA) predicts the cash rate will drop from 4.35% to 3.35% by the end of the year.

While the magnitude and timing of future rate cuts are far from certain, mortgage rates are likely to come down this year, which will reduce the appeal of paying down the mortgage.

Australians may therefore be wondering whether shares offer superior financial returns today.

According to the 2024 Vanguard Index Chart, Australian shares have returned 9.1% over the past 30 years. For international shares, the return is even higher, with an average return of 11.1% over the past 30 years. 

However, the current price-to-earnings (PE) ratio for the S&P/ASX 200 Index (ASX: XJO) is around 20 times earnings. This is above its historical average of 15 times, suggesting future returns may be below the historical average. Similarly, the PE ratio for the S&P 500 Index (SP: .INX) is 28 times earnings, well above its long-term average of 18. 

Overall, shares appear to be the more compelling use of funds. However, investors should also factor in their view on the future of interest rates and whether they believe the current share market is overvalued, as this will impact returns.

Other considerations

Additional personal circumstances are likely to influence whether paying down the mortgage or buying shares is more appealing. 

Firstly, the absolute mortgage size is largely dependent on the size of the home loan. The average new home loan size is largest in New South Wales and lowest in the Northern Territory. This reflects the median values of properties across the country. Those with a larger mortgage may be more comfortable paying it down more quickly, even if the return is slightly lower. 

Secondly, personal tax rates. Share market returns are quoted in pre-tax figures. Investors must pay tax on dividends and any realised capital gains. Tax rates in Australia range from 0% on income up to $18,200, to 47% plus a 2% medicare levy for top income earners. There is also a 50% capital gains discount on shares held for more than 12 months.

For an individual paying 30% tax, this means that a 9.1% pre-tax return becomes 6.4% post-tax on dividends and short-term capital gains. With this figure very close to the current mortgage rate, the deciding factor may come down to the individual investor's personal circumstances.

Motley Fool contributor Laura Stewart has no position in any of the stocks mentioned. The Motley Fool Australia's parent company Motley Fool Holdings Inc. has no position in any of the stocks mentioned. The Motley Fool Australia has no position in any of the stocks mentioned. The Motley Fool has a disclosure policy. This article contains general investment advice only (under AFSL 400691). Authorised by Scott Phillips.

More on How to invest

How to invest

This simple ASX strategy could outperform most investors

A straightforward mix of ASX and global ETFs, combined with consistency, could be a powerful long-term investing approach.

Read more »

Young businesswoman sitting in kitchen and working on laptop.
How to invest

What could $500 a month in ASX 200 shares become in 20 years?

Building wealth doesn’t require a lump sum. Here’s what regular investing in ASX shares could achieve over time.

Read more »

A woman stands in a field and raises her arms to welcome a golden sunset.
ETFs

What is HALO investing and how do investors gain exposure to it?

Here's what investors need to know about the HALO framework.

Read more »

A woman holds her empty unzipped wallet upside down and dips her head to look under it to see if any money falls out of it.
How to invest

$0 in savings? I'd aim for $20k in annual passive income with 3 simple steps

These simple steps are all it takes.

Read more »

a group of business people sit dejectedly around a table, each expressing desolation, sadness and disappointment by holding their head in their hands, casting their gazes down and looking very glum.
How to invest

How to survive an ASX share market crash

A falling market can feel overwhelming. Here’s a simple framework for surviving an ASX share market crash and staying on…

Read more »

A man rests his chin in his hands, pondering what is the answer?
How to invest

6 rules for set-and-forget investing to fund your retirement goals

Ask yourself these questions to build a direct stock set-and-forget portfolio.

Read more »

A couple are happy sitting on their yacht.
How to invest

How to build $100,000 a year in passive income from ASX shares

Make the share market your own ATM with this strategy.

Read more »

A man sits wide-eyed at a desk with a laptop open and holds one hand to his forehead with an extremely worried look on his face as he reads news of the Bitcoin price falling today on his mobile phone
How to invest

What if the stock market crashes in 2026?

It always pays to prepare for the worst...

Read more »