Seven money mistakes that could haunt you for years

By

Horror movies may only last a few hours, but some money mistakes can haunt you for years. A neglected super account, an outdated insurance policy or a home loan you don't fully understand may not seem scary today, but they can come back to bite when you least expect it. This Halloween, here's how to avoid seven financial mistakes that could leave your wallet screaming.

The most common financial mistakes Australians make include failing to stick to a budget, not building an emergency fund, keeping outdated financial products, misunderstanding their home loan, being underinsured, neglecting their superannuation and taking on too much debt.

The good news is that avoiding some of the most common mistakes can put your finances on a much stronger footing.

A worried woman reviewing bills on her laptop at the kitchen table.

From budget blowouts and debt spirals to forgotten super and insurance gaps, here are seven financial horrors that could come back to haunt you, and how to avoid them.

The seven financial mistakes that can haunt your finances

  • Not sticking to a budget
  • Failing to build an emergency fund
  • Keeping outdated financial products
  • Not understanding your home loan
  • Being underinsured
  • Neglecting your superannuation
  • Taking on too much debt

1. The budget blowout: why budgeting mistakes can cost you money

A budget is only useful if you stick to it.

If you've gone to the trouble of working out where your money should be allocated in any given month, it would be a shame not to put it into use.

If you don't have a budget at all, then this is certainly a good place to start.

Understanding the comings and goings of your finances is imperative to good money management.

Remember, the aim of the game is simple: don't spend more than you earn.

If you're looking for a budget planner to help you get started, ASIC's MoneySmart website offers a comprehensive calculator.

You can save it online or export it, so you can come back and review/adjust frequently.

2. The vanishing emergency fund: why emergency savings matter

Building your savings is essential.

If you're living from payday to payday, you're leaving yourself exposed.

Unexpected expenses can arrive at any time, whether it's a car repair, vet bill, medical expense or sudden loss of income. Having an emergency fund can help you avoid relying on credit cards or personal loans.

The trick is to set a regular savings schedule and keep it consistent.

The amounts you contribute may vary depending on what you have available; just remember that a little goes a long way, so contributing even a small amount is better than nothing at all.

3. The outdated money trap: outdated financial products can cost you money

Many of us have different products and accounts when it comes to our finances - personal loans, home loans, credit cards, savings accounts, transactional accounts, insurance, superannuation, to name a few.

It can be hard to keep track of them all, which is why reviewing them regularly can be tricky.

The fact of the matter is that our circumstances and the market change but our financial products often stay the same. It's worth doing a regular review of all the products and accounts you have to make sure they are still relevant.

There might be better, newer ones now.

Or your current providers might be willing to give you a better deal if they know you're scouring the market; it never hurts to ask.

Many Australians stay loyal to transaction and savings accounts that pay very little interest, potentially missing out on higher returns available elsewhere.

If you want to compare products, try using a comparison website such as Canstar, Mozo or Finder.

4. The home loan horror: home loan mistakes that could increase your repayments

According to Mortgage Choice's 2025 Home Loan Report, more than half of borrowers (57%) wish they had done more homework before choosing their first home loan.

That's a concern given a home loan is often the biggest financial commitment Australians will ever make.

Yet many borrowers focus solely on the interest rate and overlook features that could save them money or provide greater flexibility.

A home loan is one of the biggest financial commitments you'll ever make.

It's worth taking time to understand exactly what you're signing up for.

Beyond the interest rate, features such as offset accounts, redraw facilities, extra repayments and refinancing options can make a significant difference over the life of a loan.

5. The insurance shock: the risks of being under-insured

We never want the worst to happen but that doesn't mean you shouldn't plan for the worst.

Leaving this to chance is a risky decision. When it comes to insurance, it's worth taking a two-pronged approach.

First, you need to make sure you have all the relevant insurances for your circumstances.

The main ones to consider include home and contents insurance, car insurance, health insurance, total and permanent disability insurance (TPD), income protection and life insurance.

Next you need to make sure you have sufficient coverage.

If your insurance doesn't cover you fully it's somewhat redundant. Be sure to speak to a professional adviser if you need help determining the appropriate cover for you.

Being underinsured can leave you financially exposed when you need to make an insurance claim, potentially costing thousands of dollars out of your own pocket.

Reviewing your insurance annually is a must.

Your situation can change significantly over 12 months and you don't want to get caught with outdated insurance.

6. The retirement nightmare: superannuation mistakes to avoid

Apart from the family home, superannuation is likely to be one of the biggest assets you own.

But it can be hard to plan for something so far into the future, especially when life gets in the way and current priorities take centre stage.

Getting to post-work life and realising you don't have enough superannuation can be extremely stressful. It's time to stop taking a passive approach to your superannuation.

Regularly reviewing your superannuation can help reduce unnecessary fees and ensure your investment option remains suitable for your age, goals and risk tolerance.

There are simple ways to improve your future financial outlook:

  • Consolidate your super accounts if you have more than one - this means you won't be hit by multiple fees;
  • Take advantage of tax concessions and salary sacrifice options and top up your balance with personal contributions;
  • Get a check-up to ensure your investment option is the right one for you and the stage of life you're in. For example, if you're younger and at the start of your career you might decide to take a riskier long-term investment option, whereas if you're close to retirement you might want to consider a safer option. This will depend on your individual circumstances and risk appetite.

7. The debt spiral: how to avoid excessive debt

We will all have debt in some form or another throughout our lives.

And true, there's good debt (your mortgage) and bad debt (your credit card) but once we start down that track it can be a slippery slope.

Keeping debt in check doesn't have to be difficult; there are simple ways to help manage your expenses.

For instance, limit the number of credit cards you have.

If you don't have automatic payments, set reminders in your calendar for when your repayments are due, pay more than the due amount if you can, and try consolidating your debt to make it easier to manage.

Get stories like this in our newsletters.

Related Stories

Money has helped Australians make smarter financial decisions for more than 20 years. As Australia's longest-running and highest-selling personal finance magazine, it delivers expert advice on investing, budgeting, tax, superannuation, property, retirement and cost-of-living challenges. Money won Newsletter of the Year, Single Article of the Year and Magazine Cover of the Year at the 2026 Mumbrella Publish awards. Backed by award-winning journalists and financial specialists, Money provides practical tips, market insights and trusted guidance to help Australians grow, protect and manage their wealth. The team also hosts the popular Friends With Money podcast. Follow Money on Facebook, Instagram, LinkedIn, X (formerly Twitter) and TikTok for trusted personal finance news, tools and strategies that work.