GST calculator
Free GST, VAT, and sales tax calculator. Add tax to a net price or remove it from a gross price, with presets for UK, Australia, India, Canada, NZ, and more.
How to use
- Enter your amount. Type the price you want to work with, whether it already includes tax or not.
- Choose add or remove. Select add to apply tax to a net price, or remove to extract tax from a gross, tax-inclusive price.
- Pick a rate. Choose a country preset such as UK 20% or India 18%, or enter your own custom rate.
- Read the breakdown. See the net amount, the tax amount, and the gross total, with the CGST and SGST split shown for India.
Features
- Add or remove tax. Calculate a gross price from a net one, or work backward to find the tax hidden inside an inclusive price.
- Country rate presets. One-tap rates for UK VAT, Australia, India, Canada, New Zealand, and Singapore save you looking them up.
- India CGST and SGST split. For Indian GST rates it automatically divides the tax into equal CGST and SGST components.
- Custom rate support. Enter any percentage you like for regions, products, or situations the presets do not cover.
- Clear breakdown. Always shows the net amount, the tax amount, and the gross total so nothing is ambiguous.
When to use it
- Adding GST or VAT to a price when preparing a customer invoice.
- Removing tax from a tax-inclusive total to find the base price.
- Splitting Indian GST into CGST and SGST for accounting.
- Checking the VAT portion of a UK receipt at 20%.
- Applying a custom sales-tax rate for a specific region or product.
Is it private?
Everything runs entirely in your browser, and nothing you enter is ever sent to a server.
Frequently asked questions
Is this GST calculator free?
Yes, it is completely free with no sign-up, no limits, and no install required.
How do I add GST to a price?
Enter the net price, choose the add option, and pick a rate. The tool multiplies the price by the rate and adds it to give the gross, tax-inclusive total.
How do I remove GST from an inclusive price?
Enter the gross price and choose remove. The calculator divides out the tax to reveal the original net amount and the tax portion contained within it.
What are CGST and SGST?
In India, GST on a within-state sale is split equally into Central GST (CGST) and State GST (SGST). For Indian rates the tool shows both halves automatically.
Which countries and rates are included?
Presets cover UK VAT at 20%, Australia at 10%, India at 5, 12, 18, and 28%, plus Canada, New Zealand, and Singapore. You can also enter any custom rate.
Do you store my figures?
No. Everything is calculated in your browser and nothing you enter is sent to or saved on a server.
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