Understanding small business tax deductions in Australia can help business owners reduce taxable income, improve cash flow and avoid unsupported claims.
A business expense is generally deductible when it is directly related to earning assessable business income. If an expense has both business and private use, only the business portion can be claimed. You must also keep appropriate records to support the deduction.
It is important to remember that a tax deduction reduces taxable income. It does not mean the Australian Taxation Office reimburses the full amount you spent.
Common Small Business Tax Deductions in Australia
The expenses your business can claim will depend on its activities and structure. Common deductible expenses may include:
- Accounting, bookkeeping and tax agent fees
- Advertising, website hosting and digital marketing
- Commercial rent and eligible occupancy expenses
- Business insurance premiums
- Software and cloud accounting subscriptions
- Business-related telephone and internet costs
- Employee wages and eligible superannuation contributions
- Office supplies, printing and postage
- Professional memberships and industry subscriptions
- Repairs and maintenance of business equipment
- Interest on business borrowings
- Eligible motor vehicle and business travel expenses
- Training related to your existing business activities
Private expenses, fines and certain entertainment costs are generally not deductible. If your business is registered for GST and entitled to claim a GST credit, the income tax deduction generally excludes the GST component claimed through your business activity statement.
Permanent $20,000 Instant Asset Write-Off
An important measure announced in the 2026–27 Federal Budget was the decision to make the $20,000 instant asset write-off permanent from 1 July 2026. This measure is now law.
Eligible small businesses with aggregated annual turnover below $10 million that apply the simplified depreciation rules may immediately deduct the business-use portion of eligible depreciating assets costing less than $20,000.
The asset must be first used or installed ready for use in the relevant income year. The threshold applies separately to each asset, which means an eligible business may claim an immediate deduction for multiple assets. Certain exclusions and limits may apply.
An asset costing exactly $20,000 does not fall below the threshold. Eligible assets costing $20,000 or more are generally added to the small business depreciation pool and depreciated at 15% in the first income year and 30% in subsequent years.
The instant asset write-off is a tax deduction, not a cash rebate. Business purchases should therefore be based on genuine commercial requirements and available cash flow.
Motor Vehicle and Business Travel Expenses
Subject to the applicable rules, a business may be able to claim the business-use portion of vehicle expenses such as fuel, registration, insurance, repairs, lease costs, decline in value and interest on money borrowed to purchase the vehicle.
The available deduction method and record-keeping requirements depend on the business structure, type of vehicle and level of private use. Where a vehicle is used for both business and private purposes, only the business portion can be claimed.
Business-related transport, accommodation and overnight meal expenses may also be deductible. However, any private component, such as extending a business trip for a holiday, must be excluded. Fringe benefits tax may also apply where a business provides an employee with a vehicle or travel for private use.
Home-Based Business Expenses
If you operate your business from home, you may be able to claim the business portion of electricity, internet, telephone expenses and the decline in value of eligible office furniture and equipment.
In certain circumstances, occupancy costs such as rent, mortgage interest, council rates and home insurance may also be relevant. However, claiming occupancy expenses can affect the main residence capital gains tax exemption when the property is eventually sold. Professional advice should be obtained before claiming these costs.
Certain ATO Interest Charges Are No Longer Deductible
General interest charge, or GIC, and shortfall interest charge, or SIC, incurred on or after 1 July 2025 are no longer income tax deductible. This applies even if the underlying tax debt or shortfall relates to an earlier financial year.
GIC is calculated daily on overdue tax liabilities and compounds over time. Small businesses should actively manage tax debts, lodgements, payment arrangements and cash flow rather than treating these charges as an ordinary deductible finance cost.
Preparing for Payday Super
From 1 July 2026, employers must pay superannuation guarantee contributions for each payday rather than under the previous quarterly framework.
In general, contributions must reach an employee’s nominated superannuation fund within seven business days after payday, subject to limited exceptions. Employers must also report qualifying earnings and super liabilities through Single Touch Payroll.
Small businesses with employees should ensure their payroll systems, superannuation payment processes and cash-flow arrangements are ready for these requirements.
Keep Appropriate Records
Good records are essential when claiming small business tax deductions in Australia. Businesses should retain invoices, receipts, contracts, vehicle records and calculations supporting any business-use percentage.
A bank statement may show that a payment was made, but it may not establish what was purchased or how the expense related to earning business income. Tax records should generally be kept for at least five years, although longer periods may apply in some circumstances.
Frequently Asked Questions About Small Business Tax Deductions in Australia
Q1. What expenses can a small business claim?
A small business can generally claim expenses directly related to earning business income. These may include accounting fees, advertising, insurance, software, commercial rent, employee costs, eligible vehicle expenses and office costs. Private expenses cannot be claimed.
Q2. Can sole traders claim business tax deductions?
Yes. Sole traders may claim eligible expenses incurred in earning assessable business income. Where an expense has both business and private use, only the business-related portion can be claimed.
Q3. Can I claim a vehicle purchased for my business?
The business-use portion of a vehicle may be deductible through depreciation, the instant asset write-off or another applicable method. The correct treatment depends on the vehicle’s cost, the business structure, how the vehicle is used and the available substantiation records.
Q4. Do I need receipts for business tax deductions?
Businesses generally need appropriate evidence showing what was purchased, how much was paid and how the expense related to the business. A bank or credit card statement alone may not provide sufficient evidence.
Q5. How long should business tax records be kept?
Business tax records should generally be retained for at least five years. Different or longer retention periods may apply depending on the transaction, asset or tax issue involved.
Q6. Should I use an accountant to review my business deductions?
A registered tax agent can help identify eligible expenses, apply the correct timing and depreciation rules, and ensure private or non-deductible amounts are excluded. Professional advice can be particularly valuable when purchasing assets, claiming vehicle expenses, operating from home or dealing with mixed-use expenses.
Need Help Reviewing Your Small Business Tax Deductions?
Not sure whether your business is claiming all available deductions or applying the latest tax rules correctly? Kintax Accountants can review your business expenses and assist with tax returns, bookkeeping, BAS and GST compliance, payroll, asset purchases and proactive tax planning.
Contact Kintax Accountants
Phone: 0399393692
Email: info@kintax.com.au
Office: Level 1, 287A Spring Street, Reservoir VIC 3073
Enquiries: Request a consultation
Based in Reservoir, Kintax Accountants provides professional taxation, accounting, bookkeeping and business advisory services to small businesses throughout Melbourne’s northern suburbs and greater Melbourne.
Disclaimer: This article contains general information only and does not constitute tax, financial or legal advice. Tax outcomes depend on the circumstances of each business. Professional advice should be obtained before acting on this information.
