GST (Goods and Services Tax) is a unified indirect tax levied on the supply of goods and services in India. It replaced multiple taxes like VAT, service tax, and excise duty. GST has four main slabs: 5%, 12%, 18%, and 28%.

How do I remove GST from a GST-inclusive amount?

To remove GST from a GST-inclusive price, divide the total amount by (1 + GST rate/100). For example, to remove 18% GST from ₹1180: ₹1180 / 1.18 = ₹1000. The original amount is ₹1000 and the GST is ₹180.

What are the GST slabs in India?

India has four main GST tax slabs: 5% (essential goods and services like transport, small restaurants), 12% (processed foods, business class air travel), 18% (most services, electronics, restaurants), and 28% (luxury goods, automobiles, tobacco, aerated drinks). Some items like fresh food and healthcare are exempt (0% GST).

GST Calculator India – Add or Remove GST Online

Q: How do I add GST to an amount?

To add GST, multiply the original amount by (1 + GST rate/100). For example, to add 18% GST to ₹1000: ₹1000 × 1.18 = ₹1180. The GST amount is ₹180 and the total is ₹1180.

Q: What is CGST and SGST?

CGST (Central GST) and SGST (State GST) are components of GST collected on intra-state transactions. They are each half of the total GST rate. For example, at 18% GST, CGST = 9% and SGST = 9%. IGST (Integrated GST) applies to inter-state transactions and equals the full GST rate.

🧮 GST Calculator

Calculation Mode

Original Amount (excluding GST)

₹

GST Rate

Custom %:

Standard Indian GST slabs: 0%, 5%, 12%, 18%, 28%

📊 Calculation Result

Total Amount (with GST)

₹0

Original Amount ₹0

GST Rate 0%

GST Amount ₹0

CGST (50%) ₹0

SGST (50%) ₹0

              Total Amount
              ₹0
            

📋 How to Use This GST Calculator

Choose Calculation Mode Select "Add GST" if you want to calculate the total price including GST, or "Remove GST" to find the pre-GST price from a GST-inclusive amount.
Enter the Amount Type the amount in the input field. For "Add GST" mode, enter the base amount. For "Remove GST" mode, enter the GST-inclusive total.
Select the GST Rate Click on one of the standard GST slab buttons (0%, 5%, 12%, 18%, 28%) or enter a custom rate in the custom field.
Click "Calculate GST" View the instant breakdown including base amount, GST amount, CGST, SGST, and the final total.

ℹ️ About This GST Calculator

Our GST Calculator India is a free, fast, and accurate tool designed for business owners, accountants, freelancers, and consumers who need to quickly perform GST calculations. Whether you need to add GST to a base price or remove GST from a GST-inclusive amount, this tool handles both scenarios with ease.

India's Goods and Services Tax (GST) system has four main tax slabs — 5%, 12%, 18%, and 28% — along with a 0% category for exempt goods. This GST calculator supports all standard slabs and also allows custom rates for special cases. The tool also breaks down the GST into CGST and SGST components, which is useful for intra-state B2B transactions.

Use this tool for GST calculation on invoices, purchase orders, quotations, and everyday buying decisions. All calculations happen instantly in your browser — no sign-up, no data stored, completely free.

5% GST Slab 12% GST Slab 18% GST Slab 28% GST Slab CGST & SGST Reverse GST

📈 Tax Breakdown

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Enter amount and calculate
to see breakdown

📌 GST Slab Reference

0% GST Fruits, veggies, milk, salt

5% GST Transport, small restaurants

12% GST Processed foods, business travel

18% GST Electronics, most services

28% GST Luxury goods, automobiles

⚡ Quick Examples

❓ Frequently Asked Questions

What is GST and how does it work in India? ▼

GST (Goods and Services Tax) is a unified indirect tax levied on the supply of goods and services across India, introduced on July 1, 2017. It replaced a complex system of multiple central and state taxes like VAT, service tax, excise duty, and CST. GST is a destination-based tax collected at each stage of the supply chain, with the final burden falling on the end consumer. India has four main GST slabs: 5%, 12%, 18%, and 28%, with a 0% category for exempt essential goods.

How do I add GST to an amount? ▼

To add GST to a base amount, use the formula: Total = Base Amount × (1 + GST Rate / 100). For example, to add 18% GST to ₹10,000: Total = ₹10,000 × 1.18 = ₹11,800. The GST amount is ₹1,800 and the total payable is ₹11,800. Simply enter the base amount in our GST calculator, select 18%, and click Calculate to get instant results.

How do I remove (reverse) GST from a price? ▼

To remove GST from a GST-inclusive price (reverse GST calculation), use the formula: Base Amount = Total Amount / (1 + GST Rate / 100). For example, to remove 18% GST from ₹11,800: Base = ₹11,800 / 1.18 = ₹10,000. The GST amount is ₹1,800. Use the "Remove GST" mode in our calculator to perform this automatically.

What is CGST and SGST? How are they different from IGST? ▼

CGST (Central Goods and Services Tax) and SGST (State Goods and Services Tax) are levied on intra-state (within the same state) transactions. They are each half of the total GST rate. For example, at 18% GST, CGST = 9% and SGST = 9%. IGST (Integrated GST) is levied on inter-state transactions (between different states) and equals the full GST rate. Our calculator shows the CGST and SGST breakdown for your reference.

Which goods and services fall under each GST slab? ▼

0% GST: Fresh vegetables, fruits, milk, eggs, salt, newspapers, books. 5% GST: Household necessities, small restaurants, transport services, life-saving drugs. 12% GST: Processed foods, computers, business class air tickets, mobile phones. 18% GST: Most services (telecom, IT, financial), electronics, restaurants, construction materials. 28% GST: Luxury goods, automobiles, tobacco products, aerated drinks, casinos, betting. Note: These categories may change as the GST council updates rates periodically.