5 Common Tax Deductions Australian Business Owners Miss (2026 Update)

Running a small business is demanding, and when tax time rolls around, it’s easy to overlook deductions that could significantly lower your taxable income. With the ATO tightening its focus on compliance for the 2026 financial year, accurate record-keeping is more important than ever.

Here are 5 legitimate tax deductions that many Australian small business owners often miss.

1. The $20,000 Instant Asset Write-Off

Great news for the 2025–2026 financial year: the $20,000 Instant Asset Write-Off has been extended. This allows eligible small businesses (with a turnover under $10 million) to immediately deduct the full cost of assets costing less than $20,000, rather than depreciating them over several years.

What you can claim: Computers, tools, office furniture, or coffee machines for the staff kitchen. Remember, the asset must be installed and ready for use by June 30, 2026, to claim it in this tax return.

2. Superannuation Contributions

Did you know you can claim a tax deduction for super contributions you make for your employees? With the Super Guarantee rate rising to 12%, this is a significant expense that you should ensure you are claiming correctly.

Crucial Tip: Super contributions are only tax-deductible in the financial year they are received by the super fund. To claim the deduction for the 2026 year, ensure you pay the clearing house at least 10 days before June 30.

3. Home Office Expenses

If you run your business from home, you are entitled to claim a portion of your running costs. Many owners underclaim here because the rules can be confusing.

• Running Expenses: You can generally claim the work-related portion of electricity, heating, cooling, and internet expenses.
• Occupancy Expenses: If you have a dedicated area of your home set aside exclusively for business (like a clinic or workshop), you may also be able to claim a portion of your rent or mortgage interest.

4. Motor Vehicle Expenses

Using your personal car for business—whether it's visiting clients or picking up supplies—is a valid deduction. However, estimating your usage is a fast way to trigger an ATO audit.

To maximise this claim, we recommend using the Logbook Method. By keeping a valid logbook for 12 continuous weeks, you can establish a business-use percentage (e.g., 85%) and claim that percentage of all car costs, including fuel, insurance, registration, and servicing.

5. Professional Education

Investing in yourself is often 100% tax-deductible. If you take a course, attend a seminar, or buy business books that are directly related to generating your current income, you can claim these costs.

Summary

Keeping accurate records is the key to maximising your return. We highly recommend using cloud software to snap photos of receipts so you never lose them. If you need help migrating to a digital system, check out our software migration services.