GST Calculator

Add or extract 10% GST from any amount instantly — free tool for Australian businesses.

Australia's GST rate is a flat 10%. Use this tool to add GST to a price, or work out how much GST is included in a price you already have.

When Do I Need to Register for GST?

You must register for GST once your business's current or projected annual turnover reaches $75,000 (or $150,000 for non-profit organisations), or if you provide taxi, limousine or ride-sharing services regardless of turnover. Once registered, you must charge GST on taxable sales, lodge Business Activity Statements (BAS), and can claim GST credits on eligible business purchases.

Need help with GST registration or BAS lodgement?

We handle GST registration, BAS preparation and lodgement for businesses across the NT — so you never miss a deadline.

View Our GST & BAS Services
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