7 Tax Return Mistakes Aussies Keep Making (And How To Dodge Them This Year)

When it comes to lodging your Australian tax return, simple mistakes can cost you money, delay your refund, or attract unwanted attention from the ATO. The good news? Most common errors are easily avoided with a little know-how. In this article, we’ll walk you through the most frequent tax return mistakes Aussies make, and show you exactly how to steer clear of them.

Why Avoiding Tax Return Mistakes Matters

Making errors on your tax return can lead to:

• Delays in receiving your refund
• Paying more tax than necessary
• ATO audits or penalties
• Stress and wasted time

By understanding the common traps, you can lodge with confidence and maximise your refund.

Mistake #1: Forgetting to Include All Income

Types of Income People Commonly Miss

Many taxpayers assume their only income is from wages or salaries. However, the ATO requires you to declare all income sources, including:

• Interest from bank accounts
• Dividends from shares
• Rental income
• Government payments (e.g., JobSeeker, Youth Allowance)
• Capital gains (e.g., selling shares or property)

How to Avoid It

Use the ATO’s pre-fill service through myGov or consult a registered tax agent. Double-check all income sources, especially if you have side gigs, investments, or government payments.

Mistake #2: Overclaiming Deductions

Common Deduction Overclaims

Claiming deductions you’re not entitled to, or exaggerating them, is a red flag for the ATO. Frequent overclaims include:

• Work-related expenses without receipts
• Claiming personal expenses as work expenses
• Incorrect home office expenses

How to Avoid It

Only claim deductions directly related to earning your income. Keep valid records (receipts, logbooks, diaries). Remember, the ATO often cross-checks claims against industry averages.

Mistake #3: Incorrectly Claiming Work-From-Home Expenses

Why This Became a Big Issue

Since COVID-19, more Australians are working from home, leading to confusion about what can be claimed.

How to Avoid It

You can use one of two methods:

1. Fixed rate method: A standard rate per hour.
2. Actual cost method: Claim a portion of actual running costs.

Make sure you have records to justify your claims. The ATO updated the fixed rate method from 1 July 2022, so check the latest rules.

Mistake #4: Missing Offsets and Rebates

Commonly Missed Tax Offsets

Australians often miss out on valuable offsets, such as:

• Low and Middle Income Tax Offset (LMITO), although phased out, some may still apply for previous years.
• Private health insurance rebate
• Spouse superannuation contributions offset

How to Avoid It

Use the ATO’s checklist or get professional advice to make sure you don’t miss out on these valuable offsets.

Mistake #5: Incorrect Bank Details

Why It Happens

In a rush, many taxpayers input the wrong BSB or account number, delaying their refund.

How to Avoid It

Double-check your bank account details before lodging. A simple typo could mean waiting weeks longer for your refund.

Mistake #6: Not Lodging on Time

Consequences of Lodging Late

Missing the 31 October deadline (if lodging yourself) may lead to:

• Late lodgment penalties
• Interest charges

How to Avoid It

• Lodge before the deadline
• Use a registered tax agent to access later lodgment deadlines
• Set reminders in your calendar

Mistake #7: Relying Too Heavily on Pre-Fill Data

Why Pre-Fill Isn’t Always Perfect

While pre-fill data is helpful, it may be incomplete, especially early in the tax season.

How to Avoid It

Always cross-check pre-fill data with your own records. Banks, employers, and investment bodies sometimes submit data late.

Best Practices for a Smooth Tax Return

To wrap up, here are a few simple habits to make your tax return stress-free:

• Keep organised records throughout the year
• Don’t rush your return, check everything twice
• Seek help from a registered tax agent if unsure
• Stay up-to-date with ATO rules and changes

Final Thoughts

Mistakes on your tax return are common but avoidable. Taking the time to understand your obligations, double-check information, and keep proper records can save you money and headaches.

If you’re ever unsure, consider working with a qualified tax agent to help you navigate Australia’s complex tax system with confidence.