GST Calculator
Adds or removes 10% GST from any amount.
Your result
Estimate only. Results update as you type.
How this calculator works
Add GST: amount × 1.1. GST included in a price: price ÷ 11. Remove GST: price ÷ 1.1.
Worth knowing
You must register for GST once your business turnover reaches $75,000 a year, or $150,000 for non-profits.
Guides for this calculator
Questions
- When do I need to register for GST?
- When your annual GST turnover reaches $75,000, or $150,000 for non-profits. Taxi and ride-share drivers must register regardless of turnover.
- What company tax rate applies?
- 25% for base rate entities with turnover under $50 million, and 30% for other companies.
- Should I talk to an accountant?
- Yes, for structure, tax planning and compliance. These calculators give quick estimates only.
This calculator gives general estimates using published Australian rates and formulas. It doesn’t consider your personal circumstances. Check current figures with the ATO, your state government or a qualified professional before making decisions. See our disclaimer.