Australian Sole Trader (ABN) Tax & PAYG Calculator
Calculate net business profit, taxable income, quarterly PAYG instalments, and optional superannuation deductions for Australian sole traders.
Calculate net business profit, taxable income, quarterly PAYG instalments, and optional superannuation deductions for Australian sole traders.
Calculate net business profit, taxable income, quarterly PAYG instalments, and optional superannuation deductions for Australian sole traders. Calculate exact, penny-accurate projections compliant with 2026 ATO • Reserve Bank of Australia (RBA) standards using Calconova's deterministic IEEE-754 (Decimal.js) calculation engine with instant breakdowns.
Tax Payable = (Taxable Income × Stage 3 Rates) - SBTO Offset (Max $1,000) + 2% Medicare LevyTaxable Income = Gross Invoiced Revenue - Tax-Deductible Business Expenses + Other Income.
All calculations, amortizations, and scenario projections displayed on this page are strictly for informational and educational purposes. Nothing herein constitutes investment, financial, tax, or legal advice. Actual ATO tax rates, superannuation rules, RBA cash rates, and lender criteria may vary. Calconova explicitly disclaims all liability for any decisions taken based upon these calculations. Consult an ASIC-licensed financial advisor or CPA prior to executing financial commitments.
Sole traders are not taxed as separate legal entities. Business profits (revenue minus allowable deductions) are added to your personal taxable income and taxed at individual marginal rates (Stage 3) plus the 2% Medicare Levy.
If you carry on a small business as a sole trader with turnover under $5 million, you are entitled to the SBTO, which provides a tax discount of up to $1,000 per year.
After lodging your first profitable tax return, the ATO will usually enter you into the PAYG Instalment system, requiring you to make quarterly payments towards your expected annual income tax.
Calculate net take-home pay across weekly, fortnightly, monthly and annual periods with updated Stage 3 tax cuts, Medicare Levy (2%), and 12% Superannuation.
Calculate compulsory HECS/HELP repayments based on your Repayment Income (1% to 10% tiers) and estimate annual inflation indexation impacts.
Estimate your 2% Medicare Levy, low-income threshold phase-in relief, and Medicare Levy Surcharge (MLS 1% to 1.5%) if you do not have private hospital cover.