Australian GST Calculator
Calculate GST (10%), GST-exclusive and GST-inclusive prices accurately
Australian GST Calculator
If you run a business in Australia, you deal with GST almost every day — selling products, charging for services, or checking sales reports. Getting GST right really matters. That’s why we built this free Australian GST Calculator.
This calculator helps Australian retailers and business owners calculate GST correctly, including prices with GST, prices without GST, and the total tax collected. There’s no accounting jargon — just clear numbers you can rely on.
At POSApt, we work closely with Australian businesses of all sizes. This calculator is designed around how GST actually works in real retail, hospitality, and service environments.
What This Australian GST Calculator Does
- Calculate GST (10%) from a GST-exclusive price
- Work out the final price including GST
- Remove GST from a GST-inclusive total
- Clearly see how much GST is collected for the ATO
It’s useful for pricing products, checking invoices, reviewing POS sales, preparing BAS figures, or double-checking numbers.
How to Use the GST Calculator
- Enter an amount
- Select whether the amount includes GST or excludes GST
- View the instant GST breakdown
The calculator clearly shows:
- Amount excluding GST
- GST amount (10%)
- Amount including GST
What Is GST in Australia?
GST (Goods and Services Tax) is a 10% tax added to most goods and services sold in Australia. Businesses registered for GST collect this tax from customers and pass it on to the ATO.
GST Calculation Formulas (Australia-Aligned)
Example: Calculating GST
GST: $10
Total: $110
When Australian Businesses Use a GST Calculator
- Setting or reviewing prices
- Creating tax invoices
- Reviewing sales reports
- Preparing BAS statements
- Checking supplier invoices
Common GST Mistakes to Avoid
- Treating GST as income
- Forgetting to remove GST from totals
- Charging GST when it doesn’t apply
- Miscalculating GST on discounts or refunds
How POSApt Helps You Manage GST Automatically
This calculator is great for quick checks, but POSApt manages GST automatically inside your point-of-sale system.
- GST calculated on every sale
- GST-compliant receipts and invoices
- Reports that separate GST from revenue
- Cleaner BAS reporting