GST Calculator Online – Calculate GST Amount & Total (Free)

Quickly calculate GST online with our free GST Calculator. Get accurate tax amounts, total price, and save time. Easy to use on all devices—perfect for businesses and shoppers.

Net Amount (₹)

Select GST Slab (%)

Total GST Amount

₹ 0

Total Amount (With GST)

₹ 0

Detailed Tax Split

Base Amount: ₹ 0

CGST (Half): ₹ 0

SGST (Half): ₹ 0

Net Payable: ₹ 0

Free Online GST Calculator (India)

Welcome to the most accurate Goods and Services Tax (GST) Calculator. Whether you are a business owner generating invoices, a shopkeeper filing returns, or a consumer checking if you are being charged correctly, this tool is for you.

GST allows for a unified tax structure across India. Our tool helps you calculate both GST Inclusive (Tax included in price) and GST Exclusive (Tax added to price) amounts instantly based on the 5%, 12%, 18%, and 28% slab rates.

Did you know? GST replaced multiple indirect taxes like VAT, Excise Duty, and Service Tax to create a "One Nation, One Tax" system.

How to Use This Calculator?

• 1
  Enter Net Amount: Type the price of the goods or service.
• 2
  Select GST Slab: Click on standard rates (5%, 12%, 18%, 28%) or enter a custom rate.
• 3
  Choose Mode:

  • • GST Exclusive: If you want to add tax to the amount.
  • • GST Inclusive: If you want to remove tax from the total.
• 4
  View Result: See the breakdown of CGST, SGST, and Total Tax instantly.

GST Inclusive vs. GST Exclusive: What's the Difference?

This is the most confusing part for many users. Understanding the difference ensures you don't undercharge or overpay.

GST Exclusive

Add Tax

This means the price of the product does NOT include tax. You need to calculate the tax separately and add it to the cost. This is common in B2B invoices.

Formula:

GST Amount = (Price × Rate) ÷ 100

Total = Price + GST Amount

Example: ₹1000 product + 18% GST = ₹1180 Total.

GST Inclusive

Remove Tax

This means the tax is ALREADY included in the final price (MRP). You need to reverse-calculate to find the original base price.

Formula:

GST Amount = Price - [Price × {100 ÷ (100 + Rate)}]

Example: MRP is ₹1180 (at 18%). Base Price = ₹1000.

Understanding the 3 Types of GST

1. CGST

Central Goods & Services Tax. This portion of the tax goes directly to the Central Government of India.

Intra-State (Within State)

2. SGST / UTGST

State / Union Territory GST. This portion goes to the State Government where the goods are consumed.

Intra-State (Within State)

3. IGST

Integrated GST. Collected by the Central Govt when goods move from one state to another (Inter-State).

Inter-State (State to State)

* Note: If you select 18% GST in our calculator, it automatically splits into 9% CGST + 9% SGST for local transactions.

Current GST Rate Slabs in India (2025)

Rate Slab	Common Items Covered
0% (Nil Rated)	Fresh vegetables, milk, eggs, curd, unbranded flour (atta), salt, newspapers.
5% Slab	Packaged food, sugar, tea, coffee, medicines, economy air tickets, fertilizers.
12% Slab	Computers, processed food, mobile phones (varies), umbrellas, butter/cheese.
18% Slab	Most services (IT, Telecom), hair oil, toothpaste, soaps, capital goods, pasta.
28% Slab	Luxury cars, ACs, refrigerators, cigarettes, aerated drinks, cement.

Disclaimer: Rates are subject to change by the GST Council. Please verify with official HSN codes.

Why Use an Online GST Calculator?

Manual calculations are prone to errors, especially when dealing with reverse calculations (inclusive GST) or large numbers. Here is why professionals trust our tool:

• 100% Accuracy: Eliminate human error in tax filing.
• Bifurcation: Automatically splits tax into CGST and SGST.
• Time Saving: Generate invoice data in milliseconds.
• Mobile Friendly: Calculate on the go from your smartphone.

Need to calculate Reverse GST?

Most people struggle to remove tax from MRP. Our "Inclusive" tab does the complex math for you.

₹118 → ₹100

Example of removing 18% GST

Frequently Asked Questions (FAQs)

How to calculate GST from Total Amount?

To remove GST from the total amount, use the formula:
Base Amount = Total Amount × [100 / (100 + GST Rate)].
For example, if the total price is ₹118 and the rate is 18%, the base price is 118 × (100/118) = ₹100.

What is the GST rate for Gold in India?

Gold and gold jewelry attract a special GST rate of 3%. Additionally, making charges on gold jewelry are taxed at 5%. You can use the "Custom" slab option in our calculator and enter '3' to calculate this.

Does this calculator show IGST?

Yes. The total GST amount displayed is equivalent to IGST. If you are doing an intra-state transaction (within the same state), simply divide the total tax by 2 to get CGST and SGST respectively. Our breakdown table shows this split automatically.

Is GST calculated on MRP?

No, GST is calculated on the Transaction Value (Selling Price). MRP (Maximum Retail Price) is inclusive of all taxes. If you are a retailer selling at MRP, the tax is already inside that price, and you must calculate backwards to find your taxable base.