Running your own business as a sole trader means wearing many hats — and at tax time, one of the most important is knowing what you can legitimately claim. Sole trader tax deductions Australia rules are more generous than most people realise, but only if you understand the categories, keep the right records, and don’t cross the line into claiming personal expenses.
This guide covers the main deduction categories available to self-employed individuals with an ABN, what the ATO expects to see, and how to approach your return with confidence.
What is a tax deduction for a sole trader?
A tax deduction reduces your taxable income. If your business earns $90,000 and you have $20,000 in legitimate deductions, you pay income tax on $70,000. The actual saving depends on your marginal tax rate — at 32.5%, a $20,000 deduction saves you $6,500.
The ATO’s basic rule is that an expense is deductible if it is:
- Incurred in carrying on your business (not for private purposes)
- Not capital in nature (capital items are depreciated, not immediately deducted, with some exceptions)
- Substantiated with appropriate records
You can claim expenses that are entirely work-related in full, and expenses with a mixed work/private purpose at the work-related proportion only. You cannot claim expenses that are purely private, even if you paid for them from your business bank account.
Vehicle and travel deductions
Car expenses are often the largest single deduction for sole traders who travel to clients, suppliers, or job sites. The ATO provides two methods:
Cents per kilometre: 88 cents per kilometre for 2025-26, capped at 5,000 km per car. This covers all running costs in one rate. No receipts required, but you need a reasonable basis for your kilometre estimate.
Logbook method: Claim actual costs at your work-use percentage, established by keeping an ATO-compliant logbook for at least 12 continuous weeks. This method has no kilometre cap and can produce a much larger deduction for high-km drivers.
Parking fees and tolls for work trips are 100% deductible under either method, claimed separately.
For a full breakdown of car expense deductions — including GST, depreciation, and common mistakes — see Sole Trader Car Expenses ATO.
Beyond car travel, you can also claim:
- Public transport, ride-share, and taxis for work trips (keep receipts or use bank statements)
- Airfares and accommodation for work-related travel away from home overnight
- Meals during overnight business travel (not day trips — the ATO is strict on this)
Home office deductions
If you operate from a dedicated area of your home, you can claim home office expenses. The ATO currently offers two methods:
Fixed rate method: 70 cents per hour for every hour you work from home. This covers electricity, internet, phone usage, and stationery. You need a record of hours worked (a timesheet, diary, or calendar).
Actual cost method: Claim the work-use proportion of each home office expense separately — electricity, gas, internet, phone, depreciation of office furniture and equipment. This requires more detailed records but can produce a higher deduction if your home running costs are significant.
You cannot claim occupancy costs (rent or mortgage interest) unless your home is your principal place of business and you have a dedicated room used exclusively for work that clients or customers visit.
Equipment and tools
You can claim the cost of equipment and tools used in your business. How you claim depends on the cost:
Instant asset write-off: For 2025-26, sole traders can immediately deduct the full cost of an eligible asset used for business, provided the cost is below the relevant threshold. Check the current ATO threshold, as it has changed in recent years and may be subject to legislation. Assets over the threshold are depreciated over their effective life.
Depreciation: For assets that must be depreciated, the ATO sets the effective life. You claim a portion of the cost each year until the asset is written off.
Common claimable items include:
- Computers, tablets, smartphones (at work-use proportion if used privately too)
- Printers and office equipment
- Tools and trade equipment
- Cameras, audio equipment, or specialist gear for your profession
- Software subscriptions and online tools
Keep the receipt or invoice for every equipment purchase. For items with mixed personal and work use, estimate the work-use percentage and apply it.
Professional services and insurance
Fees you pay to professionals for your business are deductible:
- Accountant fees for preparing your business tax return
- Bookkeeper fees for managing your accounts
- Legal fees for contracts, business disputes, or commercial advice (note: legal fees for capital transactions such as buying a business are not immediately deductible)
- Financial adviser fees related to your business income (not personal wealth management)
Insurance premiums protecting your business income or assets are also deductible:
- Public liability insurance
- Professional indemnity insurance
- Business interruption insurance
- Workers compensation insurance (if you employ others)
- Income protection insurance (if not claiming through superannuation)
You cannot claim life insurance or insurance policies with a private benefit component.
Education and training
Expenses to maintain or improve skills you use in your current business are deductible. This includes:
- Online courses, workshops, and seminars directly related to your trade or profession
- Professional subscriptions and industry association memberships
- Books, journals, and reference materials for your field
- Conference registration fees (plus related travel costs if you travel overnight)
The key test is that the education must relate to your existing business activities. A tradie studying for an unrelated degree cannot claim the course fees. A graphic designer attending a typography workshop can.
Keeping records the ATO expects
Solid record-keeping is what turns a legitimate deduction into one you can actually defend. The ATO’s requirements are:
- Keep records for five years from the date you lodged the relevant return
- Most deductions over $300 require written evidence (receipts, invoices, bank statements)
- Claims under $300 don’t require receipts but must be reasonable and explainable
- Car expense claims must be supported by a logbook (logbook method) or a reasonable written estimate (cents per km method)
- Home office claims need a record of hours worked and relevant expense receipts
Practical record-keeping tips:
Use a dedicated business bank account and business credit card so your business transactions are automatically separated from personal ones. Review your expenses monthly rather than trying to reconstruct the year in June.
For car travel, Tripbook automatically logs every trip so you always have accurate kilometre data at tax time — no estimates, no guesswork.
Keep digital copies of all receipts. The ATO accepts digital records, and a photo of a receipt stored in cloud storage is treated the same as the paper original.
Sole trader tax deductions Australia rules reward organised operators. The more systematically you track your expenses throughout the year, the higher your deduction and the lower your stress at tax time.
For more detail on car deductions, see ATO Kilometre Rate. For ABN-specific vehicle claims, see ABN Car Deductions.
Download Tripbook to automate your kilometre tracking and enter tax time with complete, ATO-ready records.
