GST Calculator Australia

GST in Australia is a flat 10% on most goods and services. To ADD GST to a net price: multiply by 0.10. To EXTRACT GST from a gross (tax-inclusive) price: divide by 11. So $110 gross = $10 GST + $100 net. The 'divide by 11' shortcut is the universally accepted Australian way to find GST in an inclusive price.

GST registration is required if your business's annual turnover is $75,000 or more ($150,000 for non-profits). Ride-share, taxi, and uber drivers must register regardless of turnover. Below the threshold, registration is voluntary — useful if you want to claim GST credits on business purchases, or if your B2B clients prefer to deal with GST-registered suppliers.

GST-free (similar to UK 'zero-rated'): you charge 0% GST but can still claim GST credits on related expenses. Includes most food, healthcare, education, and exports. Input-taxed: you charge no GST AND can't claim GST credits on related expenses. Includes residential rent, residential property sales, financial supplies. Knowing the difference matters for your business's net GST position.

BAS = Business Activity Statement. GST-registered businesses lodge BAS quarterly (or monthly if turnover is $20M+, or annually if under $20M and approved). You report total sales, GST collected on sales, GST paid on purchases (claimable as credits), and remit the net difference to the ATO. Penalties apply for late lodgement.

A 'GST inclusive' price means the price you see includes the GST — most retail prices in Australia are GST-inclusive by law (consumer protection rule). A '$110 GST-inclusive price' means $100 net + $10 GST. Business-to-business invoices typically list net + GST separately for clarity. This calculator's 'Extract GST' mode helps you split out the GST from an inclusive price.

Yes — if you're GST-registered, you can claim back the GST you paid on business inputs (goods, services, equipment) as 'input tax credits'. To claim, you need a valid tax invoice from a registered supplier showing their ABN, the GST amount, and a description of the supply. The credits reduce your net GST payable on BAS.

Yes. GST applies to most imported goods at the border (called 'Import GST'), charged at 10% on the customs value + duty + insurance. For goods under $1,000, low-value imports purchased online from overseas retailers attract GST collected by the retailer (if registered) — this is why Amazon, eBay, etc. charge AU GST on overseas purchases.

Functionally yes — they're both value-added taxes charged at each stage of the supply chain. Australia, NZ, Canada, India, and Singapore call it GST; the UK, EU, and most of the world call it VAT. The mechanics are identical: businesses charge on output, claim back input credits, remit the net to the tax authority.