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GST / VAT Calculator
Add or remove GST/VAT and see the net, tax, and gross breakdown instantly.
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Tax calculator
Add or remove GST/VAT and see the net, tax, and gross amounts.
Net amount
$100.00
Tax amount
$10.00
Gross amount
$110.00
Free GST and VAT calculator
Use this calculator to add tax to a base price or reverse tax from a tax-inclusive price.
Results are simple calculations for convenience and are not tax advice.
Tool description
Add or remove GST/VAT from an amount and see the net, tax, and gross values. It is useful for invoices, receipts, and price checks.
Common uses
- Calculate tax-inclusive and tax-exclusive prices.
- Check GST/VAT amounts for invoices and quotes.
- Compare final prices at different tax rates.
How to use GST / VAT Calculator
- 1. Enter the amount and tax rate.
- 2. Choose whether tax should be added or removed.
- 3. Review the net amount, tax amount, and gross total.
FAQs
Can I use this for both GST and VAT?
Yes. Enter the tax rate used in your country or invoice.
What is removing tax?
Removing tax calculates the pre-tax amount from a tax-inclusive price.
Does it handle multiple tax rates?
Use one combined rate at a time. For multiple taxes, calculate each case separately or enter the combined percentage.
Calculation method
- Add-tax mode multiplies the entered amount by the tax percentage, then adds that tax amount to the original price.
- Remove-tax mode divides the tax-inclusive total by one plus the tax rate to estimate the pre-tax amount.
- The tax amount is shown as the difference between the gross amount and net amount.
Accuracy notes
- Results are arithmetic estimates and are not tax advice.
- GST/VAT rules, exemptions, rounding methods, and filing requirements vary by country, region, and product category.
- Check official guidance or a qualified tax professional for invoices, returns, or compliance decisions.