The Goods and Services Tax (GST) is India's unified indirect tax system that replaced multiple state and central taxes. Businesses and consumers frequently need to calculate GST on invoices, product prices, and service bills. GST in India is levied at multiple slab rates — commonly 5%, 12%, 18%, and 28% — depending on the category of goods or services.
There are two ways prices are quoted: GST exclusive and GST inclusive. In an exclusive price, GST is added on top of the base amount. For example, a product priced at ₹1,000 plus 18% GST would have ₹180 GST, making the total ₹1,180. In an inclusive price, GST is already embedded in the sticker price. A ₹1,180 inclusive price at 18% GST means the base amount is ₹1,000 and GST is ₹180.
Our GST calculator supports both modes. Select your GST slab from the dropdown (5%, 12%, 18%, or 28%), enter the amount, and toggle between exclusive and inclusive pricing. The calculator instantly shows the original amount, GST component, and total payable. This is especially useful for freelancers, shop owners, accountants, and anyone preparing invoices.
Understanding GST calculations helps you verify bills, claim input tax credit correctly, and price your products competitively. Always confirm the applicable GST rate for your specific product or service category, as rates vary and special exemptions may apply under Indian tax law.