Calculate GST (India) or VAT (UK/EU) on any price. Add tax to net price or extract tax from inclusive price. Supports all GST slabs.
Used only if 'Custom rate' is selected above
Enter values above to see results
Add tax: Incl. = Excl. × (1 + rate) | Remove tax: Excl. = Incl. ÷ (1 + rate)Excl.Price excluding tax (net price)Incl.Price including tax (gross price)rateTax rate as a decimal (e.g. 0.18 for 18%)When adding tax: multiply the net price by (1 + tax rate). When removing tax from an inclusive price: divide by (1 + tax rate) — this gives the correct net price. Simply subtracting the percentage from the gross price is incorrect.
GST and VAT are consumption taxes that affect virtually every purchase of goods and services. Whether you are a business calculating invoice amounts, a consumer checking if a price includes tax, or an accountant verifying tax liability, a GST/VAT calculator is an indispensable tool for daily financial tasks.
Select whether you want to add tax to a net price or remove tax from an inclusive price. Enter the amount and select the applicable tax rate. The calculator instantly shows the tax amount, exclusive price, and inclusive price.
| Region · rate | Applies to |
|---|---|
| India GST — 5% | Essential goods, basic foodstuffs |
| India GST — 12% | Standard-rated goods |
| India GST — 18% | Most goods & services, electronics, restaurants |
| India GST — 28% | Luxury goods, cars, tobacco |
| UK VAT — 20% | Standard rate, most goods & services |
| UK VAT — 5% | Reduced rate (e.g. home energy) |
| UK VAT — 0% | Zero-rated (most food, books, children's clothing) |
| EU VAT — 21% | Standard rate (varies by member state) |
A UK business invoicing at the standard 20% rate.
Invoice total £1,200, of which £200 is VAT.
Working backwards from a VAT-inclusive total.
The £1,200 contains £1,000 net + £200 VAT.
Never subtract 20% from the gross to get the net — £1,200 − 20% = £960, which is wrong. Divide by 1.20.
This calculator handles both directions of GST/VAT calculation and includes common rates for India (5%, 12%, 18%, 28%) and Europe (5%, 20%, 21%), plus a custom rate option. The formula explanation helps you understand the correct calculation method.
Never remove tax by simply multiplying the inclusive price by the tax rate percentage — you must divide by (1 + rate). Also, ensure you are using the correct tax slab for your product category, as misclassification can lead to over- or under-charging tax.
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