Sole Trader & ABN Tax Calculator
2024/2025 Stage 3 Brackets • 2% Medicare Levy • Quarterly PAYG Installments • 25% Company Rate Comparison
ABN Revenue & Expenses
Sole traders pay tax on net business profit (gross revenue minus allowable deductions).
Net after Stage 3 income tax cuts and 2.0% Medicare levy.
Sole Trader vs 25% Pty Ltd Company Structure
Comparing sole trader marginal tax brackets against the flat 25% small business company tax rate.
| Structure | Taxable Profit | Entity Tax Payable | Effective Rate |
|---|
How Sole Traders are Taxed in Australia
No Separate Tax Return
As a sole trader operating under an Australian Business Number (ABN), you and your business are legally the same entity. You declare your business income and deductions in the business schedule of your individual tax return, and your profit is taxed at standard individual marginal rates (incorporating the tax-free threshold of $18,200).
Quarterly PAYG Installments
Unlike employees who have PAYG tax withheld weekly by employers, sole traders must budget for their own tax. Once you lodge a tax return with business tax owing of $1,000 or more, the ATO will automatically enter you into the Pay As You Go (PAYG) installments system, requiring you to prepay your expected annual tax in four quarterly installments.
Next Steps & Related Australian Calculators
Strengthen your financial plan with these interconnected statutory computational models.
Australian GST Calculator
Model quarterly BAS 1A and 1B settlement for registered ABNs.
Paycheck & Income Tax (PAYG)
Compare sole trader tax rates with salaried employment.
Superannuation & Retirement Engine
Plan voluntary super contributions to reduce ABN tax.
Emergency Fund Planner
Calculate a 6–12 month cash runway for self-employed individuals.