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GST Calculator
Calculate Goods and Services Tax (GST) easily by adding or removing tax values for invoices.
GST Setup
GST Breakdown
Net Amount (excluding GST)$1,000.00
GST Amount (10%)$100.00
Total Gross Amount (including GST)$1,100.00
What is GST (Goods and Services Tax)?
GST is a broad-based value-added tax levied on most goods and services sold for domestic consumption. In countries like Australia, New Zealand, Canada, and India, it is the primary indirect tax system. It is paid by consumers but remitted to the government by businesses.
Add vs. Remove GST: How are they calculated?
Calculating invoice tax requires using correct percentages, depending on if you are adding GST to a net price or stripping it from a gross price:
- Add GST (Tax Exclusive): If your base product price is $1,000 and the tax rate is 10%, you add 10% on top:
$1,000 × 0.10 = $100 GST. The total invoice is$1,100. - Remove GST (Tax Inclusive): If you charge a customer a flat rate of $1,000 and need to calculate how much of that total is tax, you cannot just subtract 10% from $1,000. You must divide by the factor of 1 + rate:
$1,000 / 1.10 = $909.09 Base Amount. The tax amount portion is$1,000 − $909.09 = $90.91 GST.