Introduction
Solo business owners pay for software, laptops, travel, accountants and home-working costs all year. Then tax time arrives and nobody is sure which of those costs actually reduce taxable income.
A quick note on terms. "LLC" is a foreign structure, commonly American. In Australia, most single owners operate as a sole trader or through a proprietary company (Pty Ltd), and deduction treatment depends on which one you use.
Small business errors are common. The ATO estimates that overclaimed deductions make up 21% of the small business income gap, with misunderstood obligations, poor records and private claims among the causes.
This guide covers what may be deductible, how to split private and business use, what records to keep, and what to check before you lodge.
Key Takeaways
- Claim only costs tied to earning business income, not private or domestic spending.
- Deductions lower taxable income; they do not refund the full cost.
- Run extra calculations for mixed-use costs, capital assets, GST, home offices and vehicles.
- Seek professional advice for foreign LLCs and cross-border income.
Start With Your Tax Status: LLC, Sole Trader, or Australian Company?
Legal structure and tax treatment are different things. Your entity decides who the taxpayer is, and that decides how deductions and owner payments work. Registering a company with ASIC issues an Australian Company Number (ACN), while the Australian Business Register issues an ABN.
Sole Trader Tax Treatment in Australia
A sole trader is not a separate entity. Business income and deductions go in your individual tax return, even when income is below the tax-free threshold.
You are not your own employee. Money you move to yourself is a drawing, a distribution of profit, not a deductible wage.
Australian Company (Pty Ltd)
A company is a separate legal entity with its own tax return and records. It can generally deduct genuine owner salary or director fees, with PAYG withholding where it applies.
Personal drawings work differently. Company payments or loans that benefit shareholders can trigger Division 7A as unfranked dividends.
Don't carry sole-trader rules straight over to a company. Car methods, for example, differ.
Foreign Single-Member LLC Considerations
If you are an Australian tax resident who owns or controls a foreign LLC, treatment is not automatic. A qualifying single-member foreign LLC can receive partnership treatment under Division 830, but the LLC label alone doesn't settle it.
These factors also come into play:
- Residency
- Controlled foreign company rules
- Foreign tax
- Currency conversion and reporting
Get cross-border advice rather than assuming you're taxed like a sole trader. The categories below are a screening guide, not a ruling that every expense is deductible for every taxpayer.
Single-Owner Business Expenses You May Be Able to Deduct
The core test comes from the ATO's general deduction rules. The cost must be incurred in earning assessable income or carrying on a business for that purpose. It must not be capital, private or domestic, and you need records. Mixed-use costs are deductible only for the business portion.
Everyday Operating Costs
Operating expenses are generally deductible in the year you incur them. Examples include:
- Registered tax agent and accountant fees, and some legal expenses
- Stationery, rent and trading stock
- Advertising, website upkeep, software and subscriptions
- Bank fees, licences and business insurance
A consultant might claim accounting software and professional indemnity insurance. An online seller might claim platform fees and stock. Not all legal or establishment costs qualify as operating expenses.
Home Office and Working-From-Home Costs
You have two routes for running costs. The ATO's fixed rate in PCG 2023/1 is 70c per hour (published from 1 July 2024). It covers energy, phone, internet, stationery and computer consumables, so you can't claim those separately. You need records of your hours for the whole year. Check the ATO's current fixed-rate figure for 2026-27 before you claim.
The actual-cost method needs written evidence and a supported business/private split. Fixed-rate users can still claim equipment decline in value and uncovered costs such as office cleaning.
Occupancy costs (rent, mortgage interest) need an area with the character of a place of business. Exclusive business use can also limit the main-residence CGT exemption.
Vehicles, Travel, and Business Meals
Travel needs a genuine business purpose. Private trips and ordinary commuting are out, and mixed journeys must be split.
- Cents per km (sole traders): 91c/km for 2026-27, up to 5,000 business km per car
- Logbook: at least 12 continuous weeks, valid for 5 years
- Companies: actual costs backed by receipts, not cents per km
Sole traders travelling 6 or more consecutive nights need a travel diary. Entertainment is generally excluded, so check the ATO's meal rules before claiming.
Contractors, Employees, Superannuation, and Professional Fees
Employee wages and payments to contractors for business services may be deductible, provided you meet PAYG withholding and reporting obligations. Employer super is 12% of qualifying earnings for 2026-27, with super payable each payday from 1 July 2026. The deduction belongs to the year you actually make the contribution.
Don't describe your own drawings as a salary deduction. Only a company can generally deduct owner wages.
Startup Costs, Equipment, and Other Capital Purchases
Capital items (computers, machinery, furniture, vehicles) are treated differently from recurring costs. Eligible businesses with turnover under $10M can use the instant asset write-off. The threshold is a permanent $20,000 from 1 July 2026, and the asset must cost less than that.
Business use still matters. The ATO's example is a $6,800 computer at 80% business use, giving a $5,440 deduction. Assets at $20,000 or more go into the small business pool at 15% in year one and 30% after.
Some start-up capital costs can be deducted over five years under section 40-880. Certain advisory costs and government establishment fees qualify immediately.
Deductions Needing Extra Care
Mixed Business and Private Use
Home internet, your mobile, a car and a laptop are rarely 100% business. Claim only the business share, supported by a documented method such as itemised bills or a usage diary. An unsupported guess won't hold up.
GST and Income-Tax Treatment
GST registration is required once GST turnover reaches $75,000. How you treat GST for income tax depends on registration and credits:
- Claim a GST credit: exclude that GST from the income-tax deduction
- Not registered: keep GST in the cost you deduct
- Full credit on an asset: exclude GST from the asset's cost
- Partial credit entitlement: reduce cost by the credit you can claim
Owner Drawings, Loans, and Personal Payments
Moving money to yourself, repaying an owner loan or paying a personal bill from the business account creates no deduction. Record these separately from expenses. In a company, shareholder loans raise Division 7A issues.
Losses, Personal Services Income, and Cross-Border Income
- Non-commercial loss rules can defer sole-trader losses, and they don't automatically offset other income.
- Personal services income rules (the results test, the 80% rule) can restrict some deductions.
- Foreign income, deductions and tax paid must be converted to AUD, and a foreign income tax offset has its own conditions.
Check current ATO guidance rather than estimating a result yourself.
How to Claim Deductions and Build a Tax-Ready Record Today
- Separate your money. Open a business account: recommended for sole traders, required for companies.
- Capture evidence at purchase. Keep invoices, receipts, contracts, travel records and a note of the business purpose. A bank statement alone generally lacks supplier and purchase detail.
- Triage recent transactions. Label each as operating, mixed-use, capital, GST-related, private or unclear. Claim nothing until verified.
- Document your calculation method. Save workspace measurements, usage logs, asset details and proof of payment. Treat large assets separately.
Keep most records for 5 years. Purchases above $82.50 GST-inclusive need a tax invoice for a GST credit.
VJM Global supports Australian businesses with accounting, tax compliance, bookkeeping and financial advisory, and has served 250+ Australian businesses. If you have a foreign entity, cross-border income or messy records, tailored professional help is worth it.
Expenses You Generally Cannot Claim
Private and domestic costs generally don't qualify. A purchase that is merely useful to you isn't a business expense.
These usually fall outside deductible claims:
- Groceries
- Ordinary clothing
- Personal entertainment
- Owner drawings
High-risk claims include:
- Fines and penalties, including traffic fines
- Cash spending with no records
- The private share of mixed-use purchases
- GST claimed again as an income-tax deduction
- Cents per km claimed alongside separate car depreciation
- Home fixed-rate costs claimed twice
Before you claim:
- Identify how the expense connects to earning income
- Remove the private portion of any mixed-use spend
- Decide whether the item is capital
- Keep the evidence (receipts, invoices and logs)
- Check GST treatment so you don't claim it twice
- Confirm unusual claims with a tax adviser
Frequently Asked Questions
What expenses can a sole trader claim?
Business costs connected to earning assessable income, excluding private portions. ATO substantiation and capital-expense rules apply.
Can a single-member LLC claim the same deductions as a sole trader in Australia?
It depends on whether the LLC is foreign, how it is classified for Australian tax, your residency and where income is earned. Get cross-border advice.
Can I claim expenses paid before registering my business or forming the LLC?
Genuine start-up costs may qualify under section 40-880, immediately or over five years. Personal investigation costs generally don't. Check ATO timing and record rules.
Can I claim home office and vehicle costs as a sole trader?
Yes, if there is a genuine business connection, a business-use split and records. Use the ATO's current methods and rates.
Do I claim GST and income-tax deductions on the same expense?
Not for the same amount. If you can claim a GST credit, the deduction excludes the GST. Confirm your treatment to avoid double-counting.
Is paying myself an owner's draw deductible?
For a sole trader, no. A draw is a transfer of business funds. Company and foreign-LLC remuneration may follow different rules.
