GST Calculator (Australia)
The GST Calculator Australia is a simple and accurate tool designed to help individuals, businesses, and freelancers quickly calculate Goods and Services Tax at the standard 10% rate.
You can use it in two ways: Add GST (exclusive pricing): Calculate the final price after GST is applied. Remove GST (inclusive pricing): Break down a GST-inclusive amount into base price and tax.
The calculator instantly shows:
Base amount (before GST) GST amount (10%)Total amount. This tool is ideal for invoicing, pricing products, accounting, and everyday business use.

How to use this tool
- Enter your price amount
- Choose whether GST should be added or removed
- The result will instantly show:
- GST amount
- Total price including/excluding GST
When to use this calculator
Use this tool when:
- Creating invoices for clients
- Pricing goods or services for your business
- Checking how much GST is included in a price
- Converting GST-inclusive and GST-exclusive amounts
Common users include:
- Small business owners
- Freelancers
- Contractors
- Online sellers
Example calculations
Example 1: Adding GST
- Input: $100
- GST (10%): $10
- Total: $110
Example 2: Removing GST
- Input: $110
- GST portion: $10
- Base price: $100
FAQ section
Q1: What is GST in Australia?
GST is a 10% tax applied to most goods and services.
Q2: Is GST always 10%?
Yes, in Australia, the standard GST rate is 10%.
Q3: Do all businesses charge GST?
Only businesses registered for GST are required to charge it.
Q4: Can I use this for invoices?
Yes, it is commonly used for pricing and invoice calculations.
