Foregone Earnings: What Every Australian Should Know in 2026

Foregone earnings represent the income you miss out on by choosing one financial decision over another. In economic terms, it’s your 'opportunity cost'—the returns you could have earned had you taken a different path. Whether you’re investing in shares, paying down your mortgage, or taking time off work, every choice comes with an alternative cost that’s easy to overlook.

For example, if you decide to use your savings to pay off $20,000 of your home loan early instead of investing it in a high-interest term deposit, the interest you would have earned from the deposit becomes your foregone earnings. The same logic applies if you take a career break—your foregone earnings are the salary and potential superannuation growth you miss during that time.

In 2026, several trends and policy changes make the concept of foregone earnings more relevant than ever:

• Superannuation Reforms: The federal government’s ongoing tweaks to super contribution caps and tax concessions have prompted many Australians to reconsider whether to salary-sacrifice more or pay down debt. Every choice has a ripple effect on long-term wealth, especially with the legislated increase in the Superannuation Guarantee to 12% this year.

• Property vs. Shares: With the RBA’s cash rate holding steady at 4.1% and the ASX showing moderate growth, Aussies are weighing whether to pour extra cash into their mortgage or invest in the share market. The foregone earnings here could be the difference in potential returns over time—especially as property prices stabilise after 2023’s rollercoaster.

• Education and Career Breaks: With more Australians upskilling or taking career breaks (often for family or health), understanding the foregone earnings from time out of the workforce is crucial for financial planning. The median full-time wage rose to $1,950 per week in 2026, so even a short break can mean substantial lost income and super growth.

Let’s bring this home with a few scenarios:

• Paying Down Debt: Sarah has $10,000 in savings. She can pay off her credit card (with a 19% interest rate) or invest in a balanced ETF (with projected 6% annual returns). By paying off the card, she avoids $1,900 in annual interest—her foregone earnings would be the lower returns from investing instead of saving on high-interest debt.

• Buying vs. Renting: Mike is considering buying a unit in Brisbane. If he buys, his deposit and repayments tie up capital that could have been invested elsewhere. The rent he saves is offset by what he could have earned if he invested his deposit in shares or super. In 2026, with rental yields and mortgage rates both high, calculating the true cost means factoring in these foregone earnings.

• Parental Leave: Priya takes 12 months’ unpaid leave to care for her child. With the national median wage and current superannuation rates, she misses $101,400 in salary and about $12,200 in employer super contributions—her foregone earnings for the year.

Ignoring foregone earnings can lead to costly mistakes. Here’s how you can put this concept to work:

• Compare Alternatives: Before making a big financial decision, calculate not just the direct costs but also what you could earn from the next-best alternative.

• Consider Taxes and Inflation: In 2026, with bracket creep and inflation still making headlines, always account for after-tax returns and rising living costs when weighing options.

• Use Tools and Projections: Many Australian banks and super funds offer calculators that help you estimate the long-term impact of different choices, including foregone earnings.

• Review Regularly: As interest rates, returns, and policies shift, revisit your calculations to ensure your financial strategy still stacks up.

Foregone earnings might be invisible, but their impact on your wealth is real. By factoring them into every big financial decision, you’ll be better placed to make choices that serve your long-term goals—not just your short-term needs. In a rapidly changing 2026, it’s more important than ever to ask: What am I really giving up?