Pay Off Mortgage or Invest? (Australia 2026)

It’s the million-dollar question every Aussie homeowner faces: Do I put extra cash towards my mortgage, or do I buy shares and watch it grow? With interest rates hovering at 6.5% (as of 2026), the decision feels huge. On one hand, you have the certainty of saving 6.5% on your biggest debt. On the other, you have the potential for 8-10% returns in the stock market. This isn't a one-size-fits-all answer; it depends entirely on your personal financial profile. We need to weigh guaranteed, risk-free savings against higher, but riskier, potential gains. Before you throw cash at either option, read through this guide to understand the pros and cons of both paths.

When rates are high, like the current 6.5%, the argument for paying down debt becomes incredibly strong. Every dollar you send to the bank is a guaranteed, risk-free return of 6.5%. This saving is also tax-free, which is a major advantage over investments. Consider this: if you have a $500,000 mortgage and can put an extra $500 per month towards the principal, you are locking in a guaranteed 6.5% return. While investing offers higher potential, it also comes with market risk and tax drag. If you have a low risk tolerance or are nearing retirement, prioritising the mortgage is the smartest, most stable move. It reduces your monthly repayment burden and gives you peace of mind, which is priceless.

Investing is about time and compounding. If your time horizon is long—say, 15 to 20 years—and you are comfortable with market fluctuations, the potential returns of 8-10% in ETFs often outweigh the immediate certainty of the mortgage payment. However, remember that investment returns are generally subject to tax (Capital Gains Tax and income tax). Before you commit, you should have an emergency buffer built up. We recommend exploring how much your goals might require by using our Retirement Calculator. If you are confident in your ability to absorb market dips and can let compounding work its magic, investing in diversified assets like Australian ETFs is a powerful wealth-building tool.

You don't have to choose just one path. The 'middle ground' is often the most powerful. The offset account is a brilliant tool because the money sits in a separate account but reduces the interest charged on your mortgage, all without being taxed. It gives you the liquidity of savings while offering the guaranteed savings of paying down debt. Another advanced strategy is debt recycling, which allows you to convert non-deductible debt (like a personal loan) into deductible debt (like a mortgage). This can be a massive tax benefit, but it’s complex, so always consult a professional. Understanding these mechanisms can help you optimise your finances and decide whether to allocate extra cash to reducing your debt or boosting your investment portfolio.