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Welcome to the free GST calculator for Darwin, Northern Territory, Australia. Our tool helps Darwin businesses, accountants, and individuals calculate 10% GST (Goods and Services Tax) instantly.
✅ Trusted by 15,000+ Darwin businesses
No registration, no hidden fees, unlimited calculations
Calculate GST in real-time as you type
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All calculations happen in your browser - we never store your data
Based on official ATO guidelines
Population: 147,255
Total Businesses: 15,000
Main Industries:
ATO Darwin
Level 8, 19-21 Cavenagh Street, Darwin NT 0800
13 28 66
Distance: In this location
If you're a Darwin-based business with annual turnover above AU$75,000, you must register for GST:
Use our free calculator above to calculate 10% GST instantly. No signup required!
Last Updated: January 23, 2026 | Location: Darwin, Northern Territory, Australia | Service Area: Darwin and surrounding Northern Territory