GST Calculator

This GST Calculator is provided for general informational purposes only. Users are advised to verify tax calculations independently and consult a professional advisor for specific tax matters. For compliance, filing, or complex GST structuring, consult Legnex Solutions.

Use our free online GST calculator tool to calculate the GST amount instantly. Easily compute your CGST, SGST, or IGST, whichever is applicable. Using this calculator, you may get the GST-inclusive and GST-exclusive amounts in just a few seconds.

Whether you are a tax consultant, accountant, freelancer, or business owner itself, this GST calculator helps you to calculate the correct GST payable amount quickly without any manual efforts in calculation.

Goods and Services Tax (GST) is an indirect tax levied on the supply of goods and services in India since July 1, 2017 and it replaced multiple indirect taxes such as VAT, service tax, excise duty, etc.

GST was charged at different tax slabs in India depending on the nature of the supply, including:

• 5%
• 12%
• 18%
• 28%

In 2026, India’s GST structure is consolidated into a simplified system, primarily operating on three main slabs of-

• 5%
• 18%
• 40%

In addition to the above, there are 0% (exempt) and special 3% rates that are applicable for specific items.

• 0% (Exempt): Applicable on milk, eggs, unbranded fresh groceries, life-saving drugs, and certain essential educational and healthcare services.
• 3%: Special rates are applicable to gold, silver, and precious jewelry.
• 5%: This rate is applicable on certain daily-use essentials, priority goods, and standard job work services.
• 18% (Standard): This is the standard rate covering the majority of commonly used consumer products, electronics (mobiles, laptops, refrigerators), and professional services.
• 40%: This is the highest tier applied exclusively to luxury and “sin” goods (e.g., premium cars, tobacco products, soft drinks).

Depending on the nature of the supply, GST can be classified as the following:

• Integrated Goods and Services Tax (IGST).
• Central Goods and Services Tax (CGST).
• State Goods and Services Tax (SGST).

GST Amount = Original Amount × GST Rate ÷ 100
Total Amount = Original Amount + GST Amount

GST Amount = Inclusive Amount × GST Rate ÷ (100 + GST Rate)
Original Amount = Inclusive Amount − GST Amount

Using our GST Calculator is simple:

1. Enter the amount
2. Select GST rate
3. Choose whether amount is inclusive or exclusive of GST
4. Click on Calculate
5. Instantly view:
   • GST amount
   • Total invoice amount
   • CGST/SGST breakup
   • IGST amount

Suppose product value is ₹10,000 and GST rate is 18%.

₹10,000 × 18% = ₹1,800

₹10,000 + ₹1,800 = ₹11,800

• CGST = ₹900
• SGST = ₹900

• Instant GST computation
• Accurate GST breakup
• Easy invoice calculations
• Saves time
• Useful for businesses and professionals
• Mobile-friendly GST calculation tool

This calculator is useful for:

• Businesses
• Chartered Accountants
• Company Secretaries
• Tax Consultants
• GST Practitioners
• Freelancers
• Shopkeepers
• E-commerce sellers
• Students