GST Calculator
Calculate GST amounts and tax-inclusive prices using your chosen tax rate.
GST / VAT Calculator
Invoicing clients and need to know how much GST to charge? Use this simple GST / VAT calculator to work out the tax amount you should charge. Enter your amount and tax rate, then choose whether the tax is included or excluded.
GST / VAT Details
Enter your amount and tax rate
%
$
%
Calculation Type
Tax Summary
Your GST / VAT breakdown
%
Total Including GST / VAT
$0.00
Enter your amount and tax rate to calculate GST / VAT.
Amount Before Tax
$0.00
GST / VAT Amount
$0.00
Tax Rate
0.00%
Total Amount
$0.00
FREE ONLINE GST & VAT CALCULATOR — NO SIGN UP REQUIRED
GST & VAT Calculator
Calculate Tax, Total Price & Pre-Tax Amount
Quickly calculate GST or VAT on a product, service, invoice, or purchase. Add tax to a price, remove tax from a tax-inclusive amount, and see the tax amount and final total instantly.
Useful for businesses, freelancers, shoppers, sellers, accountants, students, invoices, pricing calculations, and everyday tax-related calculations.
100% Free
Instant Results
Add & Remove Tax
Browser Based
Quick Tool Overview
The All Free Tool's GST & VAT Calculator helps you calculate consumption taxes quickly from a base price and a tax rate.
Enter the original amount and tax percentage to find the tax amount and final price. You can also calculate the original pre-tax amount from a price that already includes GST or VAT.
Use the calculator for product pricing, invoices, purchases, services, quotations, and quick business calculations.
About the GST & VAT Calculator
What Is GST?
GST stands for Goods and Services Tax. It is a consumption tax used in many countries and can apply to the sale of goods and services according to the applicable tax rules.
What Is VAT?
VAT stands for Value Added Tax. It is a consumption tax applied to goods and services at different stages of the supply chain, depending on the jurisdiction.
Add GST or VAT to a Price
Enter a pre-tax price and the applicable tax rate to calculate the tax amount and the resulting tax-inclusive total.
How the GST & VAT Calculator Works
Enter the amount and tax rate, then choose whether you are adding tax to a pre-tax amount or removing tax from a tax-inclusive amount. The calculator displays the relevant tax and price values.
Remove GST or VAT From a Total
If you already have a tax-inclusive price, the calculator can help determine the estimated pre-tax amount and the tax component based on the entered rate.
Key Features
VAT Calculator
Calculate VAT on products, services, purchases, or other taxable amounts.
Add Tax
Add GST or VAT to a pre-tax amount and calculate the final tax-inclusive price.
Remove Tax
Calculate the estimated pre-tax amount from a tax-inclusive total.
Tax Amount
See the calculated GST or VAT amount separately from the original price.
Final Price
Quickly determine the final price after applying the selected tax rate.
Flexible Tax Rate
Enter the applicable percentage for the specific calculation you need.
Invoice Calculations
Useful for checking product, service, quotation, and invoice tax calculations.
Business Friendly
Helpful for freelancers, sellers, businesses, and anyone working with tax-inclusive pricing.
Instant Results
Calculate the tax and total amount quickly after entering your values.
How to Use the GST & VAT Calculator
Follow these simple steps to calculate GST or VAT on your price.
Open the GST & VAT Calculator
Open the calculator and prepare the amount and applicable tax rate you want to calculate.
Pro Tip: Confirm the applicable tax rate for your product, service, or transaction.
Enter the Amount
Enter the original price or tax-inclusive total depending on the calculation you want to perform.
Pro Tip: Make sure the amount is entered using the correct currency value.
Enter the Tax Rate
Enter the GST or VAT percentage that applies to your calculation.
Pro Tip: Tax rates can vary by country, region, product, service, and transaction type.
Choose Add or Remove Tax
Choose whether you want to add GST or VAT to a pre-tax amount or remove it from a tax-inclusive amount.
Pro Tip: Use "Add Tax" when starting with a pre-tax price and "Remove Tax" when starting with a tax-inclusive total.
Review Your Inputs
Check the amount, tax rate, and selected calculation mode before calculating.
Pro Tip: A small difference in the tax rate can significantly change the final amount.
Calculate the Tax
Click calculate to determine the GST or VAT amount and the resulting price.
Pro Tip: Review the tax amount separately from the final total.
Review the Tax Amount
Check the GST or VAT amount calculated from the entered price and tax rate.
Pro Tip: Compare the result with your invoice or pricing calculation when verifying a transaction.
Review the Final or Pre-Tax Amount
Check the final tax-inclusive price or the estimated pre-tax amount depending on the selected calculation mode.
Pro Tip: Verify that the result matches the direction of your calculation.
Use the Result for Pricing
Use the calculated values for product pricing, invoices, quotations, purchases, or budgeting.
Pro Tip: Keep the tax rate and calculation assumptions with your records for easy reference.
Verify Before Finalizing
Confirm the tax rate and calculated amounts before using them on an official invoice, quote, or financial document.
Pro Tip: This calculator provides mathematical estimates and does not determine which tax rate legally applies to a transaction.