As the 2026 financial year gains momentum, now is the time for Australian business owners to review their Business Activity Statements and ensure they are not missing out on valuable GST credits and fuel tax credits.
With ongoing cost pressures, cashflow constraints and increased compliance scrutiny, leading commentary in the Australian Financial Review continues to highlight the importance of disciplined financial management and working capital optimisation. One of the simplest ways to improve business cashflow is to claim every credit you are legally entitled to, on time and correctly.
Understanding GST Credits: Claim What You’re Entitled To
What Are GST Credits?
GST credits, also known as input tax credits, are the GST amounts you have paid on business purchases that you can claim back through your Business Activity Statement.
If you purchase goods or services for your business and the price includes GST, you can generally claim that GST amount as a credit to reduce the amount you owe to the Australian Taxation Office.
For many businesses, these credits represent a significant and ongoing cashflow benefit.
Who Can Claim GST Credits?
To claim GST credits, you must:
- Be registered for GST
- Purchase goods or services for business use
- Have been charged GST by the supplier
- Hold a valid tax invoice for purchases over $82.50 including GST
You cannot claim GST credits for personal expenses or purchases that are not directly related to running your business.
The Four-Year Time Limit: Don’t Let Credits Expire
A critical but often overlooked rule is the four-year time limit. GST credits expire four years after the due date of the BAS for the period in which you first could have claimed them. Once that window closes, the entitlement is lost. Reviewing historical BAS lodgements within the four-year window is a practical way to strengthen cashflow without increasing revenue. A structured review of prior periods can uncover missed credits and correct underclaims.
Fuel Tax Credits: A Powerful but Underused Benefit
What Are Fuel Tax Credits?
Fuel tax credits allow eligible businesses to claim back the fuel tax (excise) included in the price of fuel used in business activities.
If your business uses fuel in eligible vehicles, machinery or equipment, you may be able to claim credits on your BAS.
This can be particularly valuable for:
- Construction businesses
- Transport operators
- Primary producers
- Mining and heavy industry businesses
- Businesses using generators or heavy equipment
Eligibility and Registration Requirements
To claim fuel tax credits, you must:
- Be registered for GST
- Register specifically for fuel tax credits
- Use eligible fuel for eligible business activities
Not all fuel use qualifies.
For example:
- Fuel used in passenger vehicles or light vehicles travelling on public roads is generally not eligible due to the road user charge.
- Heavy vehicles and off-road machinery may qualify at different indexed rates.
Fuel tax credit rates are indexed twice a year and vary depending on the type of fuel and activity. Given the complexity, professional advice is often critical to ensure correct calculation and compliance.
The Four-Year Rule Also Applies
Like GST credits, fuel tax credits are also subject to a four-year time limit from the BAS due date for the period when the credit could first have been claimed.Failing to review eligibility within this timeframe can result in permanently lost refunds.
BAS Accuracy and Cashflow Strategy in 2026
Recent business coverage in the Australian Financial Review has focused heavily on working capital management, rising operating costs and the importance of strong governance practices. Accurate BAS preparation is a core part of that governance.
Your BAS is not simply a compliance form. It is a financial checkpoint that reflects:
- GST collected
- GST paid
- PAYG withholding
- PAYG instalments
- Fuel tax credits
Treating BAS lodgement as a strategic cashflow review rather than a last-minute compliance task can materially improve financial outcomes.
Should You Amend a Past BAS or Claim Now?
If you identify missed GST or fuel tax credits, you may be able to:
- Correct the error in a later BAS, subject to correction limits
- Lodge an amendment for the original BAS period
The appropriate approach depends on the size of the adjustment and ATO correction thresholds.
A registered tax agent can assess:
- Whether your fuel use qualifies
- Which credit rates apply
- Whether amendments are required
- How to minimise compliance risk
Start the Year Right: Review Before It’s Too Late
Do not leave BAS reviews or credit assessments until deadlines are looming.
By proactively reviewing:
- Historical GST credits
- Fuel tax credit eligibility
- Tax invoices and documentation
- Prior BAS lodgements within the four-year window
You may unlock cashflow that is already sitting within your business records.In a tighter economic environment, optimising entitlements can be just as valuable as increasing revenue.
Conclusion: Protect Your Cashflow and Stay Compliant
As 2026 unfolds, disciplined BAS management is more important than ever. GST credits and fuel tax credits are legitimate entitlements designed to support Australian businesses, but they come with strict eligibility rules and time limits.
By reviewing your position early, ensuring documentation is in order and seeking professional advice where necessary, you can strengthen cashflow, reduce compliance risk and avoid leaving money with the ATO that rightfully belongs to your business.
A proactive BAS strategy is not just about compliance. It is about smart financial management.
How can we help?
If you have any questions or would like further information, please feel free to give our office on 08 9221 5522 or via email – info@camdenprofessionals.com.au or arrange a time for a meeting so we can discuss your requirements in more detail.
General Advice Warning
The material on this page and on this website has been prepared for general information purposes only and not as specific advice to any particular person. Any advice contained on this page and on this website is General Advice and does not take into account any person’s particular investment objectives, financial situation and particular needs.
Before making an investment decision based on this advice you should consider, with or without the assistance of a securities adviser, whether it is appropriate to your particular investment needs, objectives and financial circumstances. In addition, the examples provided on this page and on this website are for illustrative purposes only.
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