Understanding Business Expenses & Tax Deductions in Australia for 2026

Business expenses are the costs you incur as part of running your business. These can range from everyday operational costs to larger investments in equipment. However, not every expense is treated the same way for tax purposes.

Types of Business Expenses

• Ordinary Expenses: These are the regular, necessary costs for your business to operate. Examples include office rent, internet bills, and insurance.

• Capital Expenses: These are larger, one-off purchases or investments in assets such as machinery, vehicles, or office fit-outs. Capital expenses are usually claimed over time through depreciation, rather than as a single deduction.

• Private Expenses: Costs that are personal in nature, even if paid from a business account, are not deductible. For example, personal groceries or private travel cannot be claimed.

The key principle is that an expense must be directly related to earning your business income to be deductible.

The ATO’s rules on deductions can change, and for 2026 there is a continued focus on proper recordkeeping and substantiation. Here are some common business expenses that are generally tax deductible:

Operating Expenses

• Rent and Utilities: Costs for your business premises, including electricity, water, and gas.
• Phone and Internet: Business-related phone and internet expenses. If you use these services for both business and personal purposes, you can only claim the business portion.
• Office Supplies: Stationery, printer ink, and other consumables used in your business.
• Insurance: Premiums for business-related insurance, such as home insurance if you work from home, or other relevant business policies.
• Wages and Superannuation: Payments to employees, including superannuation contributions.

Professional Fees

• Accounting and Legal Fees: Costs for professional advice or services directly related to your business activities.
• Consulting Fees: Payments to consultants for business-related advice or services.

Vehicle and Travel Expenses

• Business Vehicle Costs: If you use a vehicle for business purposes, you can claim a portion of expenses such as fuel, servicing, and insurance. Only the business-use percentage is deductible.
• Travel Costs: Expenses for business-related travel, such as flights, accommodation, and meals while travelling for work. Personal travel is not deductible.

Marketing and Advertising

• Website and Online Advertising: Costs for maintaining a business website, digital advertising, and social media campaigns.
• Print Advertising and Sponsorships: Expenses for traditional advertising and sponsorships that promote your business.

Depreciation and Asset Write-Offs

• Depreciation: For assets costing more than a set threshold, you can claim depreciation over the asset’s effective life.
• Instant Asset Write-Off: Eligible businesses may be able to immediately deduct the cost of assets up to a certain threshold per asset. The rules and thresholds can change, so check the current criteria before making large purchases.

Accurate recordkeeping is essential for claiming deductions. The ATO requires you to keep records for at least five years, and digital records are now widely accepted. For deductions over certain amounts, digital recordkeeping may be mandatory.

Tips for Good Recordkeeping

• Keep Receipts and Invoices: Store all receipts and invoices for business expenses. Digital copies are acceptable if they are clear and accessible.
• Use Accounting Software: Consider using accounting software or apps to track expenses and store records securely.
• Separate Business and Personal Expenses: Maintain separate bank accounts for business and personal use to make recordkeeping easier and reduce the risk of claiming non-deductible expenses.

The ATO regularly reviews business tax returns and has highlighted several areas where mistakes are common. Avoiding these can help you stay compliant and reduce the risk of an audit.

Mixing Business and Personal Expenses

Claiming expenses that have both business and private use without correctly apportioning them can lead to issues. For example, if you use your home internet for both business and personal purposes, only the business portion is deductible. Calculate the percentage used for business and claim only that amount.

Insufficient Evidence for Claims

You must be able to substantiate your deductions with proper records. If you cannot provide receipts or other evidence, your claim may be denied. Digital records must be legible and accessible if requested by the ATO.

Incorrect Asset Claims

Not all assets qualify for immediate deduction. Make sure you understand the eligibility criteria for the instant asset write-off and depreciation rules before claiming.

Entertainment Expenses

Most entertainment expenses, such as client lunches or staff parties, are not deductible. There are some exceptions, but these are limited and subject to strict rules.

To make the most of your business deductions and stay within the rules, consider these practical steps:

Digitise Your Records

Use apps or accounting software to capture and store receipts as you go. This reduces the risk of lost paperwork and makes it easier to retrieve records if needed.

Apportion Mixed-Use Expenses

For costs that have both business and personal components—such as vehicles, phones, or utilities—work out the percentage used for business and claim only that portion. Keep a logbook or usage diary if required.

Stay Informed

The ATO updates thresholds and rules regularly. Check for updates each year, especially before making large purchases or claiming significant deductions.

Plan Major Purchases

If you are considering buying equipment or other assets, review the current instant asset write-off rules and depreciation options. Timing your purchases can affect your deductions for the year.

Understanding which business expenses are tax deductible in Australia for 2026 can help you manage your finances more effectively and avoid unnecessary tax. Focus on claiming only what you are entitled to, keep accurate records, and stay up to date with the latest ATO guidance. By following these principles, you can support your business’s financial health and reduce the risk of compliance issues.