Australia Contractor Tax Calculator
Calculate Australian contractor/sole trader tax including income tax, Medicare levy, GST obligations, and deductible expenses for 2025-26.
Regional Rule Context
Australia Rates and Rules
Tax Brackets
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Total invoiced amount (ex-GST)
Business expenses you can claim
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Calculate contractor/sole trader tax with deductible expenses and GST obligations. GST registration required if turnover exceeds $75,000.
Disclaimer: This calculator uses publicly available rules effective as of Jul 1, 2025 (version 1.0). Results are for informational purposes only. Always verify with official sources or a qualified professional. Last reviewed: Mar 1, 2026.
Formula
Contractors pay tax on their net business income (gross minus deductible expenses). GST registration is required if turnover exceeds $75,000.
Australia FAQs
When must I register for GST?
If your annual turnover is $75,000 or more. You can voluntarily register below this.
Do contractors pay their own super?
Yes. Contractors must arrange their own super contributions.
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