GST Calculator for India.
Fast & simple.

Free GST Calculator India

Use our free GST Calculator to calculate Goods and Services Tax quickly and easily. Enter the amount, select the applicable GST rate, and instantly calculate the GST amount, final price, CGST, SGST or IGST. This online GST calculator is useful for businesses, freelancers, shop owners, online sellers, service providers and customers across India.

You can use this tool to add GST to a price or remove GST from a GST-inclusive amount. The calculator supports commonly used GST rates including 0%, 5%, 12%, 18% and 28%.

How to Use the GST Calculator

1. Enter the amount you want to calculate GST on.
2. Select the applicable GST rate.
3. Choose Add GST if the amount is before GST.
4. Choose Remove GST if the amount already includes GST.
5. Select CGST + SGST for applicable intra-state transactions or IGST for applicable inter-state transactions.
6. Click the Calculate GST button to view the complete calculation.

GST Calculation Formula

When the amount is exclusive of GST, the GST amount can be calculated using:

GST Amount = Base Amount × GST Rate ÷ 100

The final amount is:

Final Amount = Base Amount + GST Amount

Example of 18% GST Calculation

Suppose the taxable amount is ₹10,000 and the applicable GST rate is 18%.

• Base Amount: ₹10,000
• GST Rate: 18%
• GST Amount: ₹1,800
• Final Amount: ₹11,800

How to Remove GST from an Inclusive Amount

If a price already includes GST, you can use the Remove GST option to find the original taxable amount and GST component.

The basic formula is:

Taxable Amount = GST Inclusive Amount × 100 ÷ (100 + GST Rate)

For example, if the GST-inclusive amount is ₹11,800 and the GST rate is 18%, the taxable value is ₹10,000 and the GST component is ₹1,800.

CGST, SGST and IGST Calculator

CGST

CGST stands for Central Goods and Services Tax. For applicable intra-state supplies, GST may be divided between CGST and SGST.

SGST

SGST stands for State Goods and Services Tax. It is used together with CGST for applicable intra-state supplies.

IGST

IGST stands for Integrated Goods and Services Tax. It applies to applicable inter-state supplies.

Common GST Rates

This GST Calculator includes commonly used GST rate options:

The applicable GST rate depends on the specific goods or services and the applicable tax rules. Always verify the correct rate before issuing an invoice or filing a tax return.

Who Can Use This GST Calculator?

Our free online GST Calculator can be useful for:

• Small business owners
• Freelancers
• Online sellers
• E-commerce sellers
• Shop owners
• Service providers
• Consultants
• Digital agencies
• Professionals
• Customers
• Students learning GST calculations

GST Calculator for Businesses

Businesses often need to calculate GST while preparing quotations, invoices, product prices and service charges. Instead of calculating GST manually, enter the taxable amount and select the applicable GST rate to quickly estimate the GST amount and final customer price.

For example, if a service costs ₹25,000 before GST and the applicable GST rate is 18%:

• Service Amount: ₹25,000
• GST: ₹4,500
• Total Amount: ₹29,500

GST Calculator for Online Sellers

Online sellers and e-commerce businesses can use a GST calculator to estimate product prices and tax amounts before preparing an invoice or quotation. It can help you quickly understand the difference between the product price, GST amount and final selling price.

Create a GST Invoice

After calculating your GST amount, you can create a professional invoice using our free GST Invoice Generator.

Calculate your tax, create your invoice and use the browser's print option to print or save the invoice as a PDF.

Frequently Asked Questions

What is a GST Calculator?

A GST Calculator is an online tool that calculates the GST amount on a given price and shows the resulting total. It can also calculate the taxable value when GST is already included in the price.

How do I calculate 18% GST?

Multiply the taxable amount by 18 and divide it by 100. For example, 18% GST on ₹10,000 is ₹1,800, making the total ₹11,800.

How is CGST and SGST calculated?

For an applicable 18% intra-state GST transaction, the tax may be divided into 9% CGST and 9% SGST. On a taxable amount of ₹10,000, CGST would be ₹900 and SGST would be ₹900.

What is the difference between CGST, SGST and IGST?

CGST and SGST are used together for applicable intra-state supplies, while IGST is used for applicable inter-state supplies.

Can I remove GST from a GST-inclusive price?

Yes. Enter the GST-inclusive amount, select the applicable GST rate and choose the Remove GST option to calculate the estimated taxable amount and GST component.

Is this GST Calculator free?

Yes. The ADN WebTech GST Calculator is free to use online and does not require registration.

Which GST rates are available?

The calculator currently provides 0%, 5%, 12%, 18% and 28% GST rate options.

Can I use this GST Calculator for invoices?

Yes. You can use the calculator to estimate GST amounts while preparing quotations and invoices. Before issuing an invoice, verify the applicable GST rate, place of supply and required invoice details.