How to Calculate and Lodge Fuel Tax Credits: The Complete Australian Business Guide

Author

Gracie Sinclair

Date

21 October 2025
A person in a light blue shirt uses a pink calculator to review receipts and financial documents at a desk.
The information provided in this article is general in nature and does not constitute financial, tax, or legal advice. While we strive for accuracy, Australian tax laws change frequently. Always consult with a qualified professional before making decisions based on this content. Our team cannot be held liable for actions taken based on this information.
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Picture this: You're filling up your work vehicle, watching the numbers on the bowser climb like a crescendo in a symphony, and you can't help but feel the sting in your back pocket. But here's the kicker – if you're running a business in Australia, you might be entitled to claw back a significant chunk of that fuel tax through Fuel Tax Credits (FTC). Yet despite the scheme's $10.2 billion value in 2024-25, countless businesses are either missing out entirely or making costly mistakes that could land them in hot water with the ATO. Whether you're a tradie hauling equipment around Penrith, a creative agency running delivery vehicles, or a small business operator trying to navigate the fuel tax maze, understanding how to properly calculate and lodge these credits could be the difference between amplifying your profits and leaving money on the table.

What Are Fuel Tax Credits and Does Your Business Qualify?

Fuel Tax Credits represent the Australian government's way of refunding businesses for the fuel tax (excise or customs duty) built into the price of fuel used for eligible business activities. Think of it as a remix of the tax system – you pay the full price upfront, including around 50.6 cents per litre in excise for petrol and diesel, then claim back what you're entitled to through your Business Activity Statement.

The scheme isn't designed for everyone, though. To even get on stage, your business must be registered for both GST and Fuel Tax Credits with the ATO. You can add FTC registration to your existing GST registration without disrupting your current tax periods – it's a straightforward process through ATO Online Services, your tax agent, or by ringing 13 28 66.

Here's where the rhythm changes: not all fuel use qualifies. Light vehicles (4.5 tonnes Gross Vehicle Mass or less) travelling on public roads? You're out of luck. But if you're operating heavy vehicles over 4.5 tonnes GVM on public roads, running machinery and equipment off-road, or using fuel in auxiliary equipment like refrigeration units or concrete mixers, you're likely in the game.

The key industries claiming fuel tax credits tell an interesting story. Agriculture leads the pack with 45% of claims (307.2 million claims in 2012-13), followed by transport at 21% (146.1 million claims). Manufacturing, construction, mining, and wholesale operations round out the major players. For creative businesses in Sydney's west, this might apply to production vehicles, equipment transport, or any machinery used in your operations.

Eligible activities include:

  • Machinery, plant, and equipment operations
  • Heavy vehicles travelling on public roads
  • Light vehicles on private roads (not accessible to the public)
  • Auxiliary equipment like air conditioning, refrigeration units, and concrete mixers
  • Electricity generation for business purposes
  • Marine and rail transport
  • Agriculture, fishing, forestry, mining, construction, and manufacturing operations

You cannot claim for:

  • Light vehicles on public roads
  • Aviation fuels
  • Private or domestic use
  • Lost, stolen, or disposed fuel
  • Diesel exhaust fluid (AdBlue) – it doesn't have excise paid on it
  • Alternative fuels already receiving government subsidies

What Are the Current Fuel Tax Credit Rates for 2025-26?

Here's where many businesses hit a bum note: fuel tax credit rates aren't static. They change twice yearly (February and August) based on the Consumer Price Index, and they vary dramatically depending on what you're using the fuel for. Getting this wrong is like playing a song in the wrong key – technically it might sound close, but it's fundamentally incorrect.

Fuel Tax Credit Rates (3 February 2025 to 30 June 2025)

Fuel TypeHeavy Vehicles on Public RoadsAll Other Business Uses
Liquid fuels (diesel, petrol)20.3 cents per litre50.8 cents per litre
Blended fuels (B5, B20, E10)20.3 cents per litre50.8 cents per litre
E850 cents per litre21.73 cents per litre
LPG (duty paid)0 cents per litre16.6 cents per litre
LNG/CNG (duty paid)0 cents per kilogram34.8 cents per kilogram
B100 (biodiesel)0 cents per litre15.2 cents per litre

Notice the significant spread? That 30.5 cent difference between heavy vehicle on-road use (20.3 cents) and all other business uses (50.8 cents) exists because of the road user charge – essentially, the government wants to recover some tax for vehicles actually using public road infrastructure.

The road user charge itself is on an upward trajectory, increasing 6% annually:

  • 2024-25: 30.5 cents per litre
  • 2025-26: 32.4 cents per litre

From 4 August 2025 onwards, rates will adjust again based on the CPI indexation factor of 1.016. Smart operators check the ATO website before each BAS lodgement because using outdated rates is one of the most common errors the ATO identifies.

How Do You Actually Calculate Fuel Tax Credits?

This is where the sheet music meets the performance. The fundamental principle is deceptively simple, but getting it right requires attention to detail that would make any sound engineer proud.

The Core Formula

Fuel Tax Credit = Number of eligible litres × Applicable fuel tax credit rate

Notice what's missing? The cost of the fuel. This is the number one mistake businesses make – they calculate based on dollars spent rather than litres consumed. The date you acquired the fuel determines which rate applies, and you must calculate based on quantity, not cost.

Example calculation: If your business used 1,000 litres of diesel in machinery off public roads during March 2025:

  • Eligible litres: 1,000
  • Applicable rate: 50.8 cents per litre (all other business uses)
  • Fuel tax credit: 1,000 × $0.508 = $508.00

For heavy vehicles on public roads using the same amount:

  • Eligible litres: 1,000
  • Applicable rate: 20.3 cents per litre
  • Fuel tax credit: 1,000 × $0.203 = $203.00

Simplified Method for Businesses Claiming Under $10,000 Annually

If your annual fuel tax credit claims are less than $10,000, the ATO offers a simplified approach that's available from the BAS period ending 31 March 2016 onwards. This method strikes a balance between accuracy and administrative burden:

  1. Use the fuel tax credit rate that applies at the END of your BAS period for the entire period (no splitting if rates changed mid-period)
  2. Calculate litres using: Total cost of fuel ÷ Average fuel price = Litres
  3. Use average fuel prices published by the Australian Institute of Petroleum
  4. Keep records using bank statements, supplier invoices, or fuel supplier statements
  5. No need to notify the ATO you're using this method

Simplified method example: Your business spent $2,000 on diesel during the quarter, and the average diesel price was $1.80 per litre:

  • Litres consumed: $2,000 ÷ $1.80 = 1,111.11 litres
  • Rate at end of period: 50.8 cents per litre
  • Fuel tax credit: 1,111.11 × $0.508 = $564.44

Apportioning Mixed Use: When Your Vehicle Plays Both Sides

Many businesses use vehicles and equipment both on and off public roads, or for both eligible and ineligible activities. This requires apportionment – splitting your fuel use into different categories. The ATO requires this to be "fair and reasonable," which means defensible if questioned.

For heavy vehicles with auxiliary equipment, the ATO's Practical Compliance Guidelines offer simplified percentages that cover both auxiliary equipment fuel AND off-road use:

  • Concrete truck (mixing barrel): 30%
  • Refrigerated vehicle: 10%
  • Waste management collection: 15%
  • Specialised auxiliary equipment: 5%
  • Air-conditioner units (sleeper cabin): 5%

Apportionment example: A refrigerated delivery truck used 2,000 litres of diesel during the quarter:

  • On-road portion (90%): 1,800 litres × 20.3 cents = $365.40
  • Refrigeration unit (10%): 200 litres × 50.8 cents = $101.60
  • Total fuel tax credit: $467.00

For certain vehicle types used mainly off public roads – graders, backhoes, front-end loaders, excavators, forklifts, bulldozers, fertiliser spreaders, combines, and tractors – no apportionment is required. You can claim all fuel at the higher "all other business uses" rate.

How Do You Lodge Fuel Tax Credits on Your BAS?

Lodging fuel tax credits follows the same tempo as your GST reporting – they're claimed on your Business Activity Statement at label 7D. The timing aligns with GST input tax credits, meaning they're attributable to the same tax period as when you acquired the fuel.

The Lodgement Process

  1. Calculate your total eligible fuel quantity for the BAS period, separated by activity type
  2. Apply the correct rate for each category (check current rates on the ATO website)
  3. Multiply quantity by rate to determine your total claim
  4. Enter the total amount at label 7D on your BAS
  5. Include fuel tax credits as assessable income in your tax return under "Assessable Government industry payments"
  6. Retain supporting documentation for five years

The credit reduces your overall BAS liability (or increases your refund) in the period you lodge. If your fuel tax credits exceed your other liabilities, the ATO will refund the difference.

Critical Time Limits

You must claim fuel tax credits within four years from the day after lodging the BAS for the tax period when you acquired the fuel. Miss this window, and your entitlement evaporates like reverb in an empty room. This four-year rule is absolute – there's no extension for discovering eligible claims later.

Correcting Errors Without Missing a Beat

The ATO's Fuel Tax (Correcting Fuel Tax Errors) Determination 2023 provides pathways for fixing mistakes:

Over-claims (debit errors) can be corrected in a later BAS if you're within the time and value limits, not under ATO compliance activity, and the error wasn't due to recklessness or intentional disregard.

Under-claims (credit errors) can be corrected in a later BAS within the time limits without value restrictions, provided you're not subject to compliance activity.

A common amendment scenario involves auxiliary equipment. If you originally claimed fuel at the on-road heavy vehicle rate (20.3 cents per litre) but the fuel was actually used in auxiliary equipment (which qualifies for 50.8 cents per litre), you can amend within four years to recover the difference – that's an extra 30.5 cents per litre you're entitled to.

What Records Must You Keep to Substantiate Your Claims?

The ATO requires businesses to maintain records for a minimum of five years showing the complete story of your fuel tax credit claims. Think of these records as your set list – they need to document every element of your performance.

Essential record-keeping requirements:

  • Type and quantity of fuel acquired for each business activity
  • Date the fuel was acquired (determines which rate applies)
  • Evidence the fuel was used in your business operations
  • Specific business activities the fuel supported (on-road, off-road, auxiliary equipment)
  • The fuel tax credit rate applied to each category
  • Calculations supporting your claim amount

For businesses using the simplified method (under $10,000 annually), acceptable records include bank statements, point-of-sale dockets, fuel supplier statements, invoices, and logbooks or telematics data for apportionment purposes. Records must be in English or easily translatable to English.

The ATO's Fuel Tax Credit Eligibility Tool and Fuel Tax Credit Calculator on their website can help ensure you're claiming correctly. The calculator works with current rates and can process up to four years of historical claims if you've missed previous entitlements.

Fine-Tuning Your Approach: Special Considerations and Common Pitfalls

Even experienced businesses can hit wrong notes when claiming fuel tax credits. The most common errors identified by the ATO include:

Using cost instead of quantity: Calculate using litres multiplied by the rate, never the dollar amount spent on fuel. This fundamental mistake can result in significant over-claiming or under-claiming.

Outdated rates: Rates change every February and August. Using last year's rates or failing to check before each BAS lodgement creates errors that compound over time.

Wrong fuel types: AdBlue (diesel exhaust fluid) doesn't qualify because no excise or duty is paid on it. Aviation fuels are specifically excluded. Claiming for these creates red flags in your BAS.

Incorrect rate application: Using the "all other business uses" rate (50.8 cents) for heavy vehicles on public roads instead of the reduced rate (20.3 cents) is a common over-claim that attracts ATO attention.

Poor apportionment: Failing to properly separate on-road and off-road use, or applying auxiliary equipment percentages incorrectly, creates compliance risks.

For heavy diesel vehicles manufactured before 1 January 1996, additional environmental criteria must be met to claim FTC. The vehicle must either be manufactured on or after 1 January 1996, registered in an accredited audited maintenance programme, have passed a DT80 test within the last two years, or comply with an endorsed maintenance schedule.

Industry-Specific Applications

For creative businesses in Penrith and greater Sydney, fuel tax credits might apply to:

  • Production vehicles transporting equipment between locations off main road networks
  • Generators powering outdoor shoots or events
  • Heavy vehicles used in set construction and transportation
  • Refrigerated vehicles for catering operations
  • Auxiliary equipment in specialty vehicles

Agricultural businesses around Sydney's fringe areas can claim for fuel used in cultivating crops, gathering harvests, rearing livestock, drilling bores, fencing, frost abatement, pest control, and building infrastructure.

Turning Fuel Costs Into Cash Flow: Your Next Steps

Fuel tax credits represent a legitimate and substantial opportunity to improve your business cash flow, but they demand precision in calculation, timing, and record-keeping. The difference between the heavy vehicle on-road rate (20.3 cents per litre) and the all other business uses rate (50.8 cents per litre) highlights why getting the categorisation right matters – on 10,000 litres annually, that's a $3,050 difference.

Remember that fuel tax credits must be included as assessable income in your tax return, which means they reduce your business expenses for tax purposes while improving immediate cash flow. This coordination between BAS claims and income tax returns requires careful tracking throughout the financial year.

The four-year time limit for claiming creates both opportunity and urgency. If you haven't been claiming fuel tax credits and believe your business qualifies, you can potentially recover up to four years of entitlements. However, each month that passes beyond the four-year mark represents lost claims that can never be recovered.

Before lodging your next BAS, verify you're using current rates from the ATO website, confirm your calculations are based on litres (not cost), ensure your apportionment methods are fair and reasonable, and check your record-keeping will substantiate your claims if questioned. The simplified method for claims under $10,000 annually offers administrative relief without sacrificing your entitlements.

For businesses with complex fuel use patterns, multiple vehicle types, or significant claiming amounts, professional guidance ensures you're maximising legitimate entitlements while maintaining ATO compliance. The cost of getting fuel tax credits wrong – whether through under-claiming (leaving money on the table) or over-claiming (triggering ATO review and potential penalties) – far exceeds the investment in proper advice and systems.

Can I claim fuel tax credits if I'm not registered for GST?

No, with one narrow exception. Businesses must be registered for GST at the time fuel is acquired to claim fuel tax credits. The exception applies to non-profit bodies claiming for fuel used in emergency services vehicles or domestic electricity generation, which can claim without GST registration. All other business entities require both GST and FTC registration through the ATO.

What happens if rates change during my BAS period?

You must apply the rate that was current when you acquired each batch of fuel. If rates changed on 4 August and your quarterly BAS covers 1 July to 30 September, you'll need to split your claim: fuel acquired before 4 August uses the old rates, and fuel from 4 August onwards uses the new rates. The simplified method for businesses claiming under $10,000 annually allows you to use the rate at the end of the period for the entire period, removing this complexity.

How do I calculate fuel tax credits for blended fuels like E10 or B20?

E10 (up to 10% ethanol) and B20 (up to 20% biodiesel) are treated as entirely petrol or diesel for fuel tax credit purposes if the ethanol or biodiesel components are within the specified thresholds. This means you claim them at the same rates as standard petrol or diesel: 20.3 cents per litre for heavy vehicles on public roads, or 50.8 cents per litre for all other business uses. E85 (high ethanol blend) has different rates: 0 cents for heavy vehicles on roads, 21.73 cents for other business uses.

Can I claim fuel tax credits for my ute travelling between job sites on public roads?

It depends on the ute's Gross Vehicle Mass (GVM). If the ute is 4.5 tonnes GVM or less and travelling on public roads, no fuel tax credits are available – this is specifically excluded. If the ute exceeds 4.5 tonnes GVM, you can claim at the heavy vehicle on public roads rate (20.3 cents per litre). If that same ute travels on private roads not accessible to the public, you can claim at the higher rate (50.8 cents per litre) regardless of GVM.

What should I do if I discover I've been under-claiming fuel tax credits for the past two years?

You can amend your previous BAS lodgements to recover under-claimed fuel tax credits, provided you're within the four-year time limit from when you lodged the original BAS for each period. Use the ATO's Fuel Tax Credit Calculator to work out historical entitlements with the correct rates for each period. Lodge amendments through your tax agent or ATO Online Services, and ensure you have the required records to substantiate the additional claims. There's no value limit on correcting under-claims (credit errors), making recovery straightforward if you're within the time limits.

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