GST Calculator Australia
This calculator helps you compute the Goods and Services Tax (GST) applicable in Australia. It's designed for businesses and individuals who need to add or remove GST from a price.
GST Calculation
Results
Data Source and Methodology
Calculations are based on the GST guidelines provided by the Australian Taxation Office. All calculations adhere to standard mathematical principles.
The Formula Explained
For adding GST: Gross = Net × 1.1
For removing GST: Net = Gross / 1.1
Glossary of Terms
- Net Amount: The original price before GST.
- GST Amount: The 10% tax applied.
- Gross Amount: The total price including GST.
Frequently Asked Questions (FAQ)
What is GST?
GST is a 10% tax on most goods, services and other items sold or consumed in Australia.
How do I calculate GST?
To calculate GST, multiply the price by 0.10 to find the GST amount, then add it to the original price for the total cost.
Is GST mandatory for all businesses?
Businesses with a turnover of $75,000 or more must register for GST.
How often do I need to report GST?
GST is usually reported quarterly, but some businesses may report monthly or annually.
Are there GST-free sales?
Yes, some goods and services are GST-free, such as certain health, education, and fresh food items.
Formula (LaTeX) + variables + units
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{netAmount.toFixed(2)}`; document.getElementById('gstAmount').textContent = `
- T = property tax (annual or monthly depending on input) (currency)
- IRS — Forms, instructions, and publications — irs.gov · Accessed 2026-01-19
https://www.irs.gov/forms-instructions - IRS — Tax topics — irs.gov · Accessed 2026-01-19
https://www.irs.gov/taxtopics - IRS — Retirement plans — irs.gov · Accessed 2026-01-19
https://www.irs.gov/retirement-plans
Last code update: 2026-01-19
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