Tax Deductions for Small Business Owners in Australia (2026 Guide)

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Who this guide is for: Australian sole traders and small business owners across service, retail and trade businesses.

Scope note: This page is intentionally broad and works well as a category-level search target. It should internally link to more specific owner pages like pizza shop owners or tradies.

Last reviewed: 22 March 2026

Quick answer

Small business owners may be able to claim genuine operating costs such as software, merchant fees, professional fees, equipment, rent, insurance and the business-use share of mixed expenses. Private drawings, private use and poorly documented spending are common reasons business claims get challenged.

  • You usually need to have paid the cost yourself.
  • The expense should directly relate to earning income or running the business.
  • Only the work-related or business-use share is usually claimable for mixed-use items.
  • Records matter just as much as the expense itself.

Intro: who this guide is for

Small business owners can usually claim most expenses directly connected to earning business income, but only the business-use portion of mixed expenses and only with proper records.

This is one of the best Phase 1 keywords because it can capture broad intent while also feeding internal links into niche-specific deduction pages.

Common deductions this occupation may be able to claim

Common expenses to review

  • Rent, utilities, business insurance and other operating costs for the business premises.
  • Bookkeeping software, invoicing tools, CRM subscriptions, website hosting and payment processing fees.
  • Accounting, BAS and tax agent fees.
  • Marketing and advertising costs such as social ads, flyers, design work and business cards.
  • Wages, super, contractor payments and other labour costs that are properly documented and deductible under the rules.
  • Interest on business finance and eligible bank fees.

Occupation-specific expenses to review

  • Vehicle costs for business trips, service calls, deliveries or supply runs, using the right record-keeping method.
  • Home-based business expenses where part of the home is used as a place of business or for genuine business admin.
  • Depreciating assets and capital expenses such as equipment, furniture, machinery and business-use computers.
  • Industry licences, professional memberships and compliance costs.
  • Eligible startup or setup costs depending on the facts and timing.

Other costs that may still matter

  • Business-use portions of mobile plans, home internet and software bundles.
  • Merchant fees, refunds processing costs and online marketplace fees.
  • Training for employees and, in some cases, eligible business training or compliance education.
  • Record-keeping tools and receipt capture apps.

Expenses commonly not deductible

  • Private spending or the private portion of mixed expenses.
  • Cash drawings or money you take from the business for personal use.
  • Fines and penalties.
  • The GST-inclusive amount when you are entitled to claim a GST credit.
  • Capital assets in the wrong way or at the wrong time without checking the depreciation rules.

Employee vs sole trader or contractor differences

  • If you run the business yourself, the focus is usually on business operating costs and record keeping rather than employee-style unreimbursed expense rules.
  • If you also have employees, remember the business claiming a cost and an employee claiming a personal deduction are not the same thing.
  • Contractors engaged by the business create a separate layer of payment and record-keeping obligations from your own deductions.

Record-keeping requirements

  • Keep a clean bookkeeping system for income, merchant fees, software, contractor payments, stock, rent and professional fees.
  • Separate private drawings and personal purchases from business expenses from the start.
  • Hold onto invoices for equipment and larger purchases so the correct deduction treatment can be reviewed later.
  • Retain BAS, bank, payroll and source records in a format that supports the figures you report to the ATO.

Common mistakes

  • Mixing personal and business spending and then trying to sort it out at tax time.
  • Claiming private drawings, private groceries or personal subscriptions as business deductions.
  • Ignoring the business-use split for vehicles, phones, internet or home costs.
  • Failing to keep the source documents needed to support bookkeeping entries.

Frequently asked questions

Can small business owners claim software and subscriptions?

Usually yes if the tools are used in running the business and earning assessable income.

Can I claim part of my home expenses for a business?

Often yes for the business-use portion, but the method and what you can claim depend on whether you truly have a place of business and on your structure.

Can I claim a vehicle used for both work and family use?

Yes, but only the business-use portion. Good records are essential.

Related guides

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Reviewed and sourced

Reviewed by: Australia Tax Deductions editorial team

Review date: 22 March 2026

How this guide is framed: This page is written as plain-English educational information and checked against official ATO guidance. It is not personal tax advice.

Primary references

General educational information only. Tax outcomes depend on your circumstances, records, business structure and the current ATO rules. Check the latest official guidance or speak with a registered tax professional before acting on any deduction claim.