- Published on
Sole Trader vs Company Business Structure & Tax Guide Australia (2026–27)
- Authors
- Name
- Charlotte Smith
- https://x.com/CharlotteSmithAU
Sole Trader vs Company Business Structure & Tax Guide (2026–27)
When starting a new commercial venture, contracting, or freelancing in Australia, selecting the right legal business structure is one of the most consequential decisions you will make.
The two most common operating structures—Sole Trader and Proprietary Limited Company (Pty Ltd)—differ fundamentally in their setup costs, ongoing administrative complexity, personal legal liability exposure, and how business profits are taxed by the Australian Taxation Office (ATO).
This guide provides a detailed side-by-side comparison of sole traders vs companies for the 2026–27 financial year, including tax tipping points and Personal Services Income (PSI) rules.
1. Quick Comparison: Sole Trader vs. Pty Ltd Company
| Feature | Sole Trader | Pty Ltd Company |
|---|---|---|
| Legal Entity | No separate legal identity (you and the business are one and the same) | Distinct legal entity separate from directors/shareholders |
| Personal Asset Liability | Unlimited Personal Liability — your personal home and savings are at risk if sued or bankrupt | Limited Liability — shareholder liability is limited to unpaid share capital |
| Tax Rate | Individual progressive tax rates (0% to 45% + 2% Medicare) | Flat 25% base rate (or 30% standard corporate rate) |
| Setup Cost | Free (Register ABN via Australian Business Register) | ~$500 to $1,000+ (ASIC registration fee + constitution) |
| Ongoing Compliance | Minimal (Individual tax return + quarterly BAS) | Higher (ASIC annual review fees ~$321/yr, separate corporate tax return) |
| Access to Profits | Instant personal drawings with zero tax penalties | Dividends or formal PAYG director salary required |
| 50% CGT Discount | Eligible for 50% capital gains discount | Not eligible for 50% CGT discount |
2. Tax Comparison: When Does Incorporating Save Money?
Because sole traders are taxed at individual personal rates while companies pay a flat 25%, the ideal structure depends on your annual net profit and whether you reinvest profits back into the business:
Sole Trader Tax Profile
- All net profit earned by a sole trader is treated as personal assessable income in the year it is earned, regardless of whether you leave the money in your business bank account or transfer it to your personal wallet.
- If your net profit is $60,000, your effective personal tax rate is ~16.8% — cheaper than a company!
Company Tax Profile & The Profit Tipping Point
- A company pays 25% flat corporate tax on retained profits.
- If your business generates $180,000 in net profit and you only need $90,000 for personal living expenses:
- As a Sole Trader: You pay progressive tax on the full $180,000 (top marginal rate of 37% + 2% Medicare).
- As a Company: You pay yourself a $90,000 salary (taxed at low personal rates) and retain the remaining $90,000 inside the company at the flat 25% rate — saving thousands in tax to fund inventory, hiring, or expansion!
3. Beware of Personal Services Income (PSI) Rules
If your revenue is generated primarily from your personal skills, knowledge, or expertise (e.g. IT contractors, consultants, engineers, doctors), the ATO's Personal Services Income (PSI) rules may apply:
- If the PSI rules apply to your business, the ATO "looks through" the company structure and taxes the business income at your individual personal tax rates.
- You cannot retain profits in the company at 25% or split income with a non-working spouse.
- To avoid PSI classification, you must pass statutory tests (such as the Results Test or 80/20 Rule + Unrelated Clients Test).
4. When to Transition from Sole Trader to Company
Most Australian entrepreneurs start as a sole trader due to zero setup costs, and transition to a Pty Ltd company once:
- Annual net profits consistently exceed $120,000 – $150,000.
- You hire employees or take on commercial leases requiring limited liability asset protection.
- You wish to raise capital, bring on business partners, or issue equity shares.
5. Model Your Business Structure & Taxes
Compare tax liabilities and test your business numbers using our free tools:
- Sole Trader vs Company Calculator — Compare tax payable under sole trader vs corporate structures.
- Sole Trader Tax Calculator — Estimate income tax, Medicare levy, and quarterly PAYG instalments.
- Company Tax Calculator — Calculate corporate tax liability and franked dividend payouts.