GST Calculator

GST (Goods and Services Tax) is an indirect tax levied on the supply of goods and services in India. The GST amount is calculated as a percentage of the base (exclusive) price. Common rates are 5%, 12%, 18%, and 28%.

To add 18% GST to a price: multiply the price by 1.18. Example: ₹1,000 + 18% GST = ₹1,180 (GST amount = ₹180). To remove GST from an inclusive price: divide by 1.18. Example: ₹1,180 ÷ 1.18 = ₹1,000.

Key Features

• Add GST mode: calculates GST amount and total inclusive price.
• Remove GST mode: extracts the base price and GST component from a GST-inclusive price.
• Supports all GST slabs: 0%, 5%, 12%, 18%, 28%.
• Displays CGST and SGST split (each half of the GST rate for intra-state transactions).
• Works entirely in your browser — no data sent to any server.

How to Use the Tool

1. Select whether you want to Add GST or Remove GST from a price.
2. Enter the amount in the price field.
3. Select the GST rate (5%, 12%, 18%, or 28%) from the dropdown.
4. The GST amount, CGST, SGST, and final total appear instantly.

Core Benefits

• Accurate invoicing — avoid manual calculation errors on GST amounts.
• Works for both business owners creating invoices and buyers verifying charges.
• Handles the CGST/SGST split for intra-state transactions automatically.

Common Use Cases

• Calculating the GST amount to add to a client invoice.
• Verifying GST charged on a restaurant or hotel bill.
• Finding the base price before GST on a GST-inclusive e-commerce listing.
• Working out input tax credit (ITC) amounts.
• Preparing GST returns — calculating tax owed on sales.

Pro Tips

• For intra-state (within the same Indian state): GST splits into CGST + SGST (each = GST rate ÷ 2).
• For inter-state: the full GST amount is IGST.
• A 0% GST item still needs to appear on invoices — the tax amount is simply ₹0.