Australian GST, made clear
Add or remove 10% GST in seconds, then use our practical guides to understand what applies to your business.
Add or remove 10% GST and see the amount excluding GST, the GST, and the total in one place.
Australia’s GST rate has remained unchanged since GST began on 1 July 2000.
How GST worksThe harder question
Search our plain-English guidance for common goods, services and transactions — from food and rent to bank fees and software.
Practical tools
Master the divide-by-11 rule to accurately extract GST from any total. This definitive guide covers the maths, practical…
↗Master the GST calculation formula for Australia. This definitive guide covers adding and subtracting GST, registration thresholds, GST…
↗Check an Australian tax invoice against the exact fields required for its value, supply type and issuer, and…
↗Estimate your BAS: enter sales and purchases to work out G1, 1A, 1B and your net GST payable…
↗Check whether you must register for GST by testing your current and projected turnover against the $75,000 ($150,000…
↗Reverse the GST on a GST-inclusive price by dividing the total by 11. Enter any amount to see…
↗Build your GST confidence
The rate, the rules and the core concepts in plain English.
Thresholds, turnover tests and when you need to register.
Labels, due dates, corrections and reporting methods.
Work out what is taxable, GST-free or input-taxed.
Invoice requirements, credits and adjustment notes.
Cross-border GST rules for goods and digital services.
From the reference library
Confused about GST on property sales, rideshare income, or farm equipment? This definitive guide breaks down the ATO's special rules for 8…
Read guideMaster GST on imports and exports with this definitive guide for Australian sole traders, small businesses, and bookkeepers. Learn how to calculate…
Read guideEverything an Australian sole trader, small business owner, or bookkeeper needs to know about valid tax invoices, recipient-created tax invoices (RCTIs), adjustment…
Read guideMaster the Business Activity Statement (BAS) and confidently report and pay GST for your Australian small business. This definitive guide covers BAS…
Read guideConfused about whether to charge GST? This definitive guide explains how the ATO classifies supplies as taxable, GST-free, or input-taxed. Learn the…
Read guideConfused about when you must register for GST? This comprehensive guide breaks down the $75,000 turnover threshold, the critical 21-day registration rule,…
Read guideUnderstand exactly how the Goods and Services Tax (GST) operates in Australia. This definitive guide covers registration, taxable supplies, input tax credits,…
Read guideLearn everything about fuel tax credits in Australia: eligibility, qualifying fuels, calculation methods, GST interaction, and claiming on your BAS. A comprehensive…
Read guideA comprehensive guide for overseas businesses selling goods or services to Australian consumers. Learn about the $75,000 GST registration threshold, the 'connected…
Read guideAustralia’s GST rate is 10% and has not changed since GST commenced on 1 July 2000.
Use the calculator above to add 10% GST to a price, or to remove GST from a GST-inclusive total. Every result shows the amount excluding GST, the GST component, and the total including GST.