Evidence-backed. Sourced from the ATO, Budget.gov.au, CommBank, ITP and independent tax advisers. General information only — not financial or tax advice. Deduction eligibility depends on your specific business structure, activity and circumstances. Consult a registered tax agent for advice on your situation. Last updated: June 2026.
⚡ Key Takeaways
- The $20,000 instant asset write-off applies per asset for small businesses (turnover under $10 million) for assets first used or installed ready for use between 1 July 2023 and 30 June 2026. The 2026–27 Budget proposes making this permanent from 1 July 2026, but the legislation is not yet passed. [3][6]
- General operating expenses — wages, super, rent, utilities, marketing, professional fees, insurance, loan interest and bank fees — are broadly deductible, but only the business portion. Private and domestic costs must be excluded and mixed-use expenses apportioned correctly. [1][7]
- If you run your business at or from home, you can claim running costs (electricity, internet, cleaning, equipment depreciation) and occupancy costs (mortgage interest, rates) — but claiming occupancy costs can partially expose your home to CGT when you eventually sell it. [1]
- Vehicle deductions require appropriate methodology — logbook or actual expenses — and apportionment for any private use. Business travel (airfares, accommodation, meals on overnight work trips) is also deductible with receipts and itineraries. [5]
- Super contributions for employees and eligible contractors are deductible in the year the fund actually receives them. Owner-operators can also deduct personal super contributions if eligible and a valid notice of intent is lodged. [7]
- The ATO has identified motor vehicles, home-office and travel as its primary small-business audit focus areas in 2026. Over-claiming without documentation — no logbook, no invoices, no apportionment — risks denied deductions, penalties and interest. [11]
6 Must-Know Small Business Tax Deductions in Australia 2026
By The Fine Print editorial team | Last updated: June 2026 | 12 min read | ⚠️ Not financial advice
Small business tax in Australia isn’t just about what rate you pay — it’s about how effectively you convert real business costs into legal deductions before 30 June. The ATO’s own analysis suggests small business owners routinely miss thousands of dollars in deductions they’re legally entitled to, while simultaneously over-claiming in areas the ATO is actively auditing. In 2026, the government locked in a permanent $20,000 instant asset write-off (announced, not yet law) and released a new small-business tax time toolkit. Here are the six deduction categories every small business owner needs to understand.📋 What’s in This Guide
- Deduction 1: Instant asset write-off (up to $20,000 per asset)
- Deduction 2: General business operating expenses
- Deduction 3: Home-based business expenses
- Deduction 4: Motor-vehicle and travel expenses
- Deduction 5: Super contributions
- Deduction 6: Prepaid expenses
- What the ATO is watching in 2026
- Three actions to take before 30 June
- Frequently asked questions
Deduction 1: Instant Asset Write-Off (Up to $20,000 Per Asset)
The instant asset write-off allows eligible small businesses to immediately deduct the full business-use portion of assets costing less than $20,000, rather than depreciating them gradually over years. For 2025–26, this threshold of $20,000 per asset applies to assets first used or installed ready for use between 1 July 2023 and 30 June 2026. The threshold applies per asset — you can write off multiple assets as long as each individual asset costs less than $20,000. New and second-hand assets both qualify. [3][1]Assets costing $20,000 or more go into the simplified depreciation pool instead: 15% deduction in the first year, 30% each subsequent year. At the end of the income year, if your pool balance drops below $20,000, you can write off the entire remaining balance. [3]💡 From 1 July 2026: The 2026–27 Budget proposed making the $20,000 instant asset write-off permanent for small businesses with annual turnover under $10 million. As at June 2026 this measure is announced but not yet law. The suspended re-entry restrictions for simplified depreciation are also proposed to be extended to 30 June 2027. Timing matters: if you’re near year-end, understand which financial year an asset will fall into and whether that affects your tax position. [6][3]
⚠️ Timing counts: The asset must be first used or installed ready for use before 30 June, not just purchased. Ordering equipment that arrives in July doesn’t qualify for 2025–26, even if you paid for it in June. Keep the delivery receipt and date of first use for every asset write-off claim. [3][1]
Deduction 2: General Business Operating Expenses
The ATO’s “Business deductions” guidance states that you can generally deduct most costs you incur in running your business. A non-exhaustive list includes: staff wages and superannuation; rent, utilities and office expenses; marketing and advertising; professional fees (accountants, lawyers, consultants, bookkeepers); insurance premiums; interest on business loans; and bank fees and charges. [1][7]The critical rule is private vs business: you cannot claim private or domestic portions of any expense. Where an expense is partially personal and partially business — a phone used for both, a laptop taken on a personal holiday — you must apportion appropriately and only claim the business percentage. Failing to do this is one of the ATO’s most-cited reasons for denying deductions. The flip side is also common: many small business owners under-claim everyday business costs they simply don’t think to record — software subscriptions, professional memberships, bank account fees, small tools, cleaning, and postage. These small amounts add up to significant unclaimed deductions. [2][10]Deduction 3: Home-Based Business Expenses
If you run your business at or from home, you can claim the business portion of two categories of expenses. Running costs — electricity, gas, cleaning, phone and internet (business portions), and depreciation on furniture and equipment used for work — are generally safe to claim and do not affect your main residence CGT exemption. Occupancy costs — mortgage interest or rent, council rates and land tax — are also claimable in proportion to the area of your home dedicated to the business, but these come with a significant tax warning. [1]⚠️ The CGT trap: Claiming occupancy expenses (mortgage interest, council rates) for a home-based business can partially remove your home’s CGT main residence exemption. When you eventually sell, a portion of any capital gain may be assessable. Conversely, many home-based business owners under-claim legitimate running expenses because they’re worried about “messing up their CGT” — ending up with the worst of both worlds: higher income tax now and some CGT exposure anyway. Get advice on the right balance for your specific situation before claiming occupancy costs. [1]
Deduction 4: Motor-Vehicle and Travel Expenses
Vehicle expenses for business use are deductible, but the method you use and the records you keep determine how much you can claim. For most small businesses, there are two main approaches: the logbook method (keep a 12-week logbook recording business vs private trips, then apply that percentage to all vehicle costs including fuel, registration, insurance, repairs, depreciation) and the actual cost method for commercial vehicles used exclusively or primarily for business. For passenger vehicles, a cents-per-kilometre rate applies for individuals. The key point is that the ATO requires substantiation — you cannot estimate business use without a logbook or comparable records. [5]Business travel expenses — airfares, taxis and ride-share, accommodation and meals on overnight work trips — are deductible where they’re directly related to earning business income and properly documented. The ATO expects itineraries, receipts, and a diary or record showing the business purpose of each trip. Travel that mixes business and holiday is only deductible in proportion to the genuine business component. [5][1]Deduction 5: Super Contributions
Super contributions for employees and eligible contractors are deductible in the income year the fund actually receives them — not when you make the payment. If you pay super in late June but the fund doesn’t receive it until July, the deduction falls into the next financial year. This is a common timing mistake that leaves deductions stranded in the wrong year. Paying super quarterly or in advance before year-end can lock in the deduction for 2025–26. [7][1]If you’re a sole trader, partner, or company director who also pays themselves a wage, you may also be eligible to claim a deduction for personal super contributions. Two conditions apply: you must be eligible (generally, less than 10% of your income from employment) and you must lodge a valid “Notice of intent to claim a deduction” with your super fund before lodging your tax return. Missing this notice means losing the deduction even if you made the contribution. [7][9]Deduction 6: Prepaid Expenses
Small businesses can claim an immediate deduction for prepaid expenses — paying in advance for services or subscriptions that extend into the next financial year — provided two conditions are met: the prepayment period must be 12 months or less, and the service period must begin in the current income year. Common examples include 12-month insurance premiums, annual software subscriptions, rent paid in advance, and professional memberships. Paying these before 30 June brings the deduction into the current year, reducing this year’s taxable income. [7][1]What the ATO Is Watching in 2026
The ATO’s 2026 key-changes commentary is explicit about where it’s focusing compliance attention for small businesses: motor vehicles, home office and travel. These are the three categories most likely to contain inflated or undocumented claims. The ATO can and does cross-reference vehicle deductions against logbook records, home-office claims against actual floor-area calculations, and travel claims against itineraries and business purpose documentation. Claims that can’t be substantiated face denial, penalties and interest charges. [11]The ATO’s broader concern is the gap between what small businesses claim and what they can prove. The 2026 Tax Time Toolkit for Small Business — released by the ATO in June 2026 and promoted via business.gov.au — includes updated, detailed guidance on exactly these three areas, plus record-keeping and online services. Downloading and reading the toolkit, then cross-checking your records against it, is the most direct way to get your claims right. [4]✅ Three Actions to Take Before 30 June
Action 1: Build a “must-claim” checklist from the ATO toolkit
Download the ATO’s 2026 Tax Time Toolkit for Small Business from ato.gov.au and go through every deduction category it covers: assets and write-offs, vehicle expenses, home-based costs, travel, super, prepayments, and general operating costs. Map each category against your business’s actual expenses for 2025–26. Create a one-page checklist and cross-check it against your accounting records or Xero/MYOB file before 30 June. Common categories that small businesses forget to claim: bank fees, annual software subscriptions, professional memberships, small tools under $300, and cleaning costs for business premises. Cross-checking before lodging, not after, is what converts missed deductions into actual savings. [4][5][1]Action 2: Make deliberate decisions about $20,000 write-off timing
For any planned equipment or asset purchases in the next few months, work through the timing question carefully. For 2025–26: the asset must be under $20,000 and first used or installed ready for use before 30 June 2026. For 2026–27: the permanent $20,000 threshold is proposed but not yet law — act on current law, not the announcement. Factors to weigh when timing a purchase: your current year’s taxable income (a write-off is more valuable in a higher-profit year); cashflow impact of early purchase; and whether delaying allows you to buy a better asset at the same price later. Document each asset’s purchase cost, date bought, and date first used or installed. That last date is what the ATO will check. [3][1][6]Action 3: Tidy up records for home, vehicles and travel now
These are the ATO’s audit focus areas, and the time to fix record-keeping is before you lodge, not after you receive an audit notice. For home office: measure or confirm the floor-area proportion used exclusively for business and keep actual bills for electricity, internet and other running costs. For vehicles: if you don’t have a logbook, start one now for a 12-week continuous period that crosses the end of the current financial year — it will be valid for five years once complete. Keep fuel, servicing and registration receipts. For travel: gather itineraries, booking confirmations and receipts for every business trip in 2025–26, and note in a diary or document the specific business purpose of each trip. A trip where you “happened to” see a client while on holiday is not a deductible business trip — the primary purpose must be business. [5][4][1]❓ Frequently Asked Questions
What is the instant asset write-off threshold for small businesses in 2025-26?
$20,000 per asset, for businesses with annual turnover under $10 million. The asset must be first used or installed ready for use before 30 June 2026. Multiple assets can be written off as long as each individual asset is under $20,000. Assets at $20,000 or above go into the simplified depreciation pool. [3][1]Can I claim home office expenses if I run my business from home?
Yes — running costs (electricity, internet, equipment depreciation) are generally safe to claim. Occupancy costs (mortgage interest, rates) are also claimable but can partially reduce your main residence CGT exemption on eventual sale. Get tax advice before claiming occupancy costs. [1]Do I need a logbook for vehicle claims?
Yes. The logbook method requires a continuous 12-week logbook recording business vs private trips. Once complete, it’s valid for five years. Without a logbook, the ATO can deny your vehicle deduction. Start one now if you don’t have an active one. [5]Are super contributions tax-deductible?
Yes — employee and contractor super is deductible in the year the fund receives the payment. Personal super contributions for owner-operators are also deductible if you’re eligible and lodge a valid Notice of Intent to Claim before filing your return. Missing this notice loses the deduction. [7]⚖️ The Fine Print Verdict
Small business tax in 2026 isn’t primarily about the rate you pay — it’s about how well you convert legitimate costs into deductions before the ATO does the maths for you. The government is genuinely offering useful tools: a $20,000 instant write-off, broad operating expense deductibility, home-office claims, vehicle rules, super deductions, and prepayment options. But none of them work without the right records. The ATO’s 2026 audit focus on vehicles, home office and travel is a signal that sloppy or inflated claims are getting more scrutiny than ever. The businesses that minimise their tax legally are not the ones chasing exotic strategies — they’re the ones who track every cost, keep every receipt, run a logbook, and cross-check their returns against the ATO toolkit before lodging.
👉 Download the toolkit. Check the deductions you’re missing. Fix the records you can’t defend — before the ATO asks.
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- ATO, “Deductions for small business,” ato.gov.au/other-languages/information-in-other-languages/business/deductions-for-small-business
- ClearTax, “Small business tax deductions Australia 2026,” cleartax.com.au/tax/business-tax/small-business-tax-deductions-australia-2026/
- ATO, “Small business support — $20,000 instant asset write-off,” ato.gov.au/about-ato/new-legislation/in-detail/businesses/small-business-support-20000-dollar-instant-asset-write-off
- ATO, “Tax time toolkit for small business 2026,” ato.gov.au (promoted via business.gov.au)
- ATO, “Deductions for motor vehicle expenses,” ato.gov.au/businesses-and-organisations/income-deductions-and-concessions/income-and-deductions-for-business/deductions/deductions-for-motor-vehicle-expenses
- Budget.gov.au, “Tax reform — 2026–27 Budget,” budget.gov.au/content/04-tax-reform.htm
- CommBank, “Small business tax deductions,” commbank.com.au/business/articles/small-business-tax-deductions.html
- ATO, “Income and deductions for business,” ato.gov.au/businesses-and-organisations/income-deductions-and-concessions/income-and-deductions-for-business/deductions
- PwC, “Australia corporate deductions,” taxsummaries.pwc.com/australia/corporate/deductions
- COSCA, “Business tax deductions Australia 2026,” cosca.com.au/learn/business-tax-deductions-australia-2026-what-small-business-owners-can-claim/
- ATO, “Overview of key changes — tax time 2026,” ato.gov.au/tax-and-super-professionals/for-tax-professionals/prepare-and-lodge/tax-time/overview-of-key-changes
- ITP, “Small business tax rate change,” itp.com.au/small-business-tax-rate-change/
- ATO, “Logbook method,” ato.gov.au/businesses-and-organisations/income-deductions-and-concessions/income-and-deductions-for-business/deductions/deductions-for-motor-vehicle-expenses/logbook-method
- New Wave, “Small business tax deductions what you can claim in 2026,” new-wave.com.au/post/small-business-tax-deductions-what-you-can-claim-in-2026/
This article is general information only and does not constitute financial or tax advice. Deduction eligibility depends on your specific business structure, activity and circumstances. Consult a registered tax agent for advice tailored to your situation. The Fine Print 🇦🇺 is not affiliated with the ATO or any other government body.