VAT Calculator
Add or remove VAT, GST, or sales tax from an amount using a custom tax rate.
How this calculator works
How to use this calculator
Choose whether you want to add tax to a net amount or remove tax from a tax-inclusive amount. Enter the amount and tax rate, then click Calculate Tax.
Formula used
To add tax: gross = net × (1 + rate). Tax amount = gross − net. To remove tax: net = gross / (1 + rate). Tax amount = gross − net.
Example calculation
If the net amount is $100 and the tax rate is 10%, the tax is $10 and the gross amount is $110. If $110 already includes 10% tax, the net amount is $100.
What the result means
The result separates the net amount, tax amount, and gross amount. This is an estimate only and does not determine official tax obligations.
Frequently asked questions
Can this be used for VAT and GST?
Yes. Enter the applicable rate manually.
Does this know my country’s tax rate?
No. You need to enter the correct tax rate for your situation.
Is this tax advice?
No. It is a basic arithmetic calculator for informational use.