GST & VAT Calculator

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About This Tool

The GST/VAT Calculator helps businesses, freelancers, and consumers quickly calculate tax amounts for any country or rate. Enter a base amount, select your tax rate (or enter a custom one), and choose whether to add tax or extract it from a tax-inclusive price.

How to Use

  1. Enter the Base Amount — the price before or after tax.
  2. Select your Tax Rate from the dropdown or choose Custom to enter your own.
  3. Choose Add Tax to calculate the total, or Remove Tax to extract the base from a tax-inclusive price.
  4. Click Calculate to see the base amount, tax amount, and total instantly.

Why Choose OmniTools?

? Instant Results

Zero server lag. All calculations run locally on your device for maximum speed.

??? 100% Private

Your data never leaves your device. No uploads, no servers, no tracking.

Frequently Asked Questions

What is the difference between GST and VAT?

GST (Goods and Services Tax) and VAT (Value Added Tax) are both consumption taxes applied at each stage of production. GST is used in countries like India, Australia, and Canada, while VAT is common in Europe and the UK. The calculation method is the same.

How do I remove tax from a tax-inclusive price?

Select "Remove Tax" mode. Enter the total price (including tax) and the tax rate. The calculator will extract the original base price and show you exactly how much tax was included.

Can I use a custom tax rate?

Yes. Select "Custom Rate" from the dropdown and enter any percentage. This works for any country or special tax rate not listed in the presets.

Is this calculator free?

Yes, completely free with no sign-up required. All calculations run in your browser.

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