GST Calculator

GST (Goods and Services Tax) is India's unified indirect tax that replaced multiple taxes like VAT, Service Tax, and Central Excise Duty on 1st July 2017. Every business registered under GST must calculate and collect the correct GST amount on goods and services sold.

Our free online GST Calculator helps you calculate GST amounts instantly — whether you need to add GST to a price (exclusive) or extract GST from a GST-inclusive price (inclusive). It supports all GST slabs: 0%, 3%, 5%, 12%, 18%, and 28%.

Use our GST Calculator in two modes:

Mode 1 — Add GST (GST Exclusive): When your price does not include GST.

1. Enter the original price (e.g., ₹10,000)
2. Select the GST rate (e.g., 18%)
3. Result: GST Amount = ₹1,800 | Total Price = ₹11,800

GST Amount = Original Price × (GST Rate ÷ 100)

Total Price = Original Price + GST Amount

Mode 2 — Remove GST (GST Inclusive): When your price already includes GST.

1. Enter the GST-inclusive price (e.g., ₹11,800)
2. Select the GST rate (e.g., 18%)
3. Result: Original Price = ₹10,000 | GST Amount = ₹1,800

Original Price = GST Inclusive Price ÷ (1 + GST Rate ÷ 100)

GST Amount = GST Inclusive Price − Original Price

Manual GST calculations are prone to errors, especially when dealing with multiple GST rates across different product categories. Our GST Calculator helps:

• Business Owners: Quickly calculate GST for invoicing and billing.
• Consumers: Know exactly how much GST you are paying on a product.
• Accountants & CA: Fast verification of GST amounts on invoices.
• E-commerce Sellers: Calculate GST for product listings and order fulfillment.
• Freelancers: Calculate GST on service invoices.