GST Calculator Online India – Calculate GST

Amount

₹

₹100 ₹10,00,000

GST Rate

Amount Type

Total Amount —

Taxable Value —

Total GST —

CGST —

SGST —

Calculate GST

Not sure how much GST is included in a bill? Or how much tax you need to add to a product's price? Use Pocketly's GST calculator online to find the amount in a few seconds.

Enter the price, select the GST rate and choose whether the amount includes tax. Our free GST calculator helps you calculate GST amounts, check final prices and understand the tax portion of a bill.

You can use this GST calculator in India for everyday purchases, business invoices, service charges and other taxable transactions.

How to Use Our Easy GST Calculator

You don't need to remember GST formulas or calculate percentages manually.

Enter the amount: Type the product price, service charge or invoice amount in rupees.
Choose the calculation type: Select GST Exclusive to add tax or GST Inclusive to remove tax from an amount.
Select the GST percentage: Choose the applicable rate or enter a custom percentage.
Select the supply type: Choose whether the transaction is within a state or between states.
Check your results: View the GST amount, original price and final amount.

For example, if a service costs ₹2,000 before GST and attracts 18% tax, the calculator will show ₹360 as GST and ₹2,360 as the final price.

How to Calculate GST Amount in India

GST is calculated as a percentage of the taxable value of goods or services. The calculation changes depending on whether the price already includes tax.

GST Exclusive Calculator – Add GST to a Price

Use this option when you know the original price but need to calculate the amount after tax.

Formula:

GST Amount = Original Price × GST Rate ÷ 100

Final Price = Original Price + GST Amount

Example:

Suppose you purchase a product priced at ₹5,000, excluding GST, and the applicable rate is 18%.

Original price: ₹5,000
GST at 18%: ₹900
Final price: ₹5,900

You pay ₹5,900, including GST.

GST Inclusive Calculator – Remove GST From a Price

Sometimes the amount printed on a bill already includes GST. You need to work backwards to find the original price.

Our GST inclusive calculator helps you separate the tax from the total amount.

Formula:

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

GST Amount = GST Inclusive Price − Original Price

Example:

You receive a bill for ₹1,180, including 18% GST.

Total bill: ₹1,180
Price before GST: ₹1,000
GST included: ₹180

This calculation is useful when checking invoices, shopping bills or service charges.

GST Calculator India – Current GST Rates

India introduced a revised GST rate structure in September 2025, with two main rates of 5% and 18%, along with a special 40% rate for selected goods and services. Certain supplies have nil or exempt treatment, while specific categories retain other rates.

GST Rate	General application
0% / Nil	Certain essential goods and specified supplies
5%	Many essential and commonly used taxable products
18%	Standard rate for many goods and services
40%	Selected goods and services subject to the special rate
Other rates	Specific categories such as certain precious-metal supplies

The rate applicable to an item depends on its classification and the relevant GST notification.

Note: The older 12% and 28% general slabs were rationalised in 2025. Check the applicable rate for the transaction date, especially for older invoices.

GST Price Calculator – Examples for Different Amounts

Want to compare how the same price changes at different GST percentages?

Here's what happens when GST is added to a base price of ₹1,000.

GST Rate	GST Amount	Final Price
0%	₹0	₹1,000
5%	₹50	₹1,050
18%	₹180	₹1,180
40%	₹400	₹1,400

These are calculation examples, not a guide to which GST rate applies to a particular product.

You can change the amount and percentage using our GST price calculator rather than doing these calculations manually.

Difference Between GST Inclusive and GST Exclusive Prices

The difference is whether the quoted price already contains GST.

GST Exclusive	GST Inclusive
GST is added to the original price	GST is already part of the price
Useful for preparing quotations	Useful for checking final bills
Starts with the pre-tax amount	Starts with the tax-inclusive amount
Example: ₹1,000 + ₹180 GST	Example: ₹1,180 including ₹180 GST

If a shop quotes ₹1,000 plus 18% GST, you pay ₹1,180. If the price is ₹1,000 including 18% GST, the tax is already included. It should not be added again.

An including GST calculator is particularly helpful when you want to understand the tax portion of a final price.

What Are CGST, SGST and IGST?

GST can be divided into different components depending on the type and place of supply.

CGST (Central Goods and Services Tax): The central component of GST on an intra-state taxable supply.

SGST (State Goods and Services Tax): The state component of GST on an intra-state taxable supply. UTGST may apply in relevant Union Territories.

IGST (Integrated Goods and Services Tax): Generally applies to inter-state taxable supplies and imports.

For example, consider a taxable transaction worth ₹10,000 at 18% GST.

Tax Type	Within the Same State	Between States
CGST	₹900	₹0
SGST	₹900	₹0
IGST	₹0	₹1,800
Total GST	₹1,800	₹1,800
Total Invoice	₹11,800	₹11,800

The overall GST amount is the same in this example. Only the tax breakdown changes.

Can You Use a GST Payment Calculator for Tax Payments?

A GST payment calculator can help estimate the tax on a particular transaction.

For instance, a freelancer charging ₹10,000 for a taxable service at 18% GST would calculate ₹1,800 in GST, making the invoice total ₹11,800.

However, the GST shown on an invoice is not necessarily the amount a registered business must pay to the government.

Actual GST liability may depend on eligible input tax credit, adjustments, reverse-charge rules and other applicable provisions.

Use the calculator to understand transaction-level GST, not as a replacement for GST return calculations.

How Does GST Apply to Personal Loan Processing Fees?

GST may also form part of the charges you pay when borrowing money.

Under applicable GST provisions, interest on a conventional personal loan is generally exempt from GST. However, processing fees and certain other service charges may attract GST.

Example: GST on a loan processing fee

Assume a lender charges ₹500 as a processing fee, excluding GST, and 18% GST applies.

Particulars	Amount
Processing fee	₹500
GST at 18%	₹90
Total processing charge	₹590

The borrower pays ₹590 in processing charges, including GST.

At Pocketly, we encourage borrowers to check applicable processing fees, GST, interest and repayment terms before accepting a loan offer.

Our GST calculator can help you estimate tax on a processing fee. Your actual loan charges will depend on the applicable loan offer and disclosures.

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Frequently Asked Questions About GST Calculator

1. What is a GST calculator?

A GST calculator is an online tool that calculates Goods and Services Tax on a given amount. It helps you find the tax amount, original price and total price after GST.

2. How can I calculate GST online?

Enter the amount in Pocketly's GST calculator online, select the applicable GST rate and choose whether the price includes GST. The calculator will display the result.

3. How do I calculate 18% GST on ₹1,000?

Multiply ₹1,000 by 18 and divide by 100. The GST amount is ₹180, making the final price ₹1,180 when tax is added.

4. How do I remove 18% GST from a total amount?

Divide the GST-inclusive amount by 1.18 to calculate the base price. Subtract that base price from the total to find the GST portion.

5. Can I calculate GST on ₹5,000?

Yes. At an assumed 18% GST rate, the tax on ₹5,000 is ₹900. The final amount becomes ₹5,900 if ₹5,000 is the price before GST.

6. Is Pocketly's GST calculator free?

Yes. You can use Pocketly's free GST calculator to estimate tax on purchases, service charges and other taxable amounts.

7. What is the difference between an inclusive and exclusive GST calculator?

An inclusive calculator removes GST from an amount that already contains tax. An exclusive calculator adds GST to the original price.

8. How do I calculate CGST and SGST?

For an intra-state supply taxable at 18%, CGST is generally 9% and SGST is 9%. On ₹1,000, that works out to ₹90 each.

9. Is GST charged on personal loan interest?

Interest on conventional personal loans is generally exempt from GST. Separate charges, such as processing fees, may attract GST.

10. Can I use a GST calculator for an old invoice?

Yes. Select the GST rate applicable on the invoice date. A custom-rate option is useful when calculating tax under historical rates.

11. Does a GST calculator calculate my final tax liability?

No. A basic calculator estimates GST on an entered amount. The tax payable by a registered business can differ after eligible credits and statutory adjustments are considered.

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