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GST Calculator

Add or Remove GST from Any Amount Instantly

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GST Calculator

What is a GST Calculator?

A GST (Goods and Services Tax) Calculator helps you quickly compute the tax amount for any transaction. You can either add GST to a base price (exclusive) or extract the GST component from a total price (inclusive/reverse GST).

GST Formulas

Add GST (Exclusive → Inclusive):

GST Amount = Base Amount × Rate ÷ 100  |  Total = Base + GST

Remove GST (Inclusive → Exclusive):

Base Amount = Total × 100 ÷ (100 + Rate)  |  GST = Total − Base

CGST, SGST & IGST Explained

This calculator shows the CGST + SGST split applicable for intra-state (within same state) supplies.

GST Slabs in India

Frequently Asked Questions

GST Exclusive means the price shown does not include GST — GST is added on top. GST Inclusive means GST is already included in the displayed price. Use "Add GST" for exclusive prices and "Remove GST" for inclusive prices.

IGST (Integrated GST) is applied when goods or services are supplied across state borders (inter-state transactions) or on imports. For transactions within the same state, CGST + SGST are charged at half the applicable rate each.

Most restaurants charge 5% GST (without input tax credit). AC restaurants and those in starred hotels charge 18% GST. Delivery apps may also charge 5% GST on their platform fees.