Free GST Calculator Calculate GST Online Instantly
Calculate GST online instantly with our free GST calculator. Add GST to a price or remove GST from a GST-inclusive amount and get the complete tax breakdown, including CGST, SGST, GST amount, and final total. No signup required.
GST Calculator
Enter an amount and GST rate to calculate your tax instantly.
Add GST to a price before tax to calculate the final amount.
Enter the original price before GST.
Select a common GST rate or enter a custom rate manually.
Quick Amount
GST Calculation
GST added to your amount
CGST
0.00%
SGST
0.00%
Total Amount
Including GST
Enter an amount to see your GST calculation.
Results update automatically as you type.
GST calculations are provided for general informational purposes. GST rates can vary by goods, services, and applicable rules. Verify the applicable GST rate before using the result for invoices or tax filings.
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How to Calculate GST
Calculate GST instantly by entering your amount, selecting the GST rate, and choosing whether GST should be added to or removed from the price.
Enter Your Amount
Enter the original price or the GST-inclusive amount you want to calculate.
Select GST Rate
Choose the applicable GST rate such as 5%, 12%, 18%, or 28%.
Get Your GST Result
Instantly see the GST amount, original price, and final price including or excluding GST.
GST Calculation Example
Here's a simple example of adding GST to a price.
Original Price
₹1,000
GST @ 18%
₹180
Final Price
₹1,180
GST Amount = Original Price × GST Rate ÷ 100
For ₹1,000 at 18% GST: ₹1,000 × 18 ÷ 100 = ₹180
What is GST?
Goods and Services Tax (GST) is an indirect tax charged on the supply of goods and services in India. Businesses often need to calculate GST when creating invoices, setting product prices, preparing quotations, or determining the final amount payable by a customer.
A GST calculator makes these calculations easier by automatically calculating the GST amount and the final price based on the selected GST rate. It can also be used to work backwards from a GST-inclusive price to find the original amount and GST component.
What can you calculate?
Use a GST calculator for common pricing and tax calculations.
Add GST to a price
Calculate the GST amount and final price when GST needs to be added to the original amount.
Remove GST from a price
Find the original price and GST amount when the given price already includes GST.
Calculate GST amount
Calculate the applicable GST amount using common GST rates such as 5%, 12%, 18%, and 28%.
Calculate GST Quickly for Prices, Invoices & Business Transactions
Calculate GST amounts and GST-inclusive or GST-exclusive prices quickly with a simple online GST calculator. Enter an amount, choose the applicable GST rate, and get the calculation instantly without doing the calculation manually.
Add GST to Any Amount
Enter the original price and GST rate to calculate the GST amount and the final price including GST. This is useful for product pricing, invoices, quotations, and customer billing.
Remove GST from a Price
If a price already includes GST, use the calculator to find the original price before GST and the GST amount included in the total.
Common GST Rates
Quickly calculate GST using commonly used rates such as 5%, 12%, 18%, and 28%. Select the rate that applies to your goods or services.
Useful for Invoices & Pricing
Use GST calculations when preparing invoices, quotations, estimates, product prices, or checking the final amount payable by a customer.
Fast & Easy Calculation
Get the GST amount and total price instantly instead of calculating percentages manually. The simple interface makes the calculator easy to use on desktop and mobile devices.
Free & No Signup Required
Calculate GST online without creating an account, installing software, or providing personal information. Enter your amount and get your result directly in your browser.
GST Calculator for everyday business needs: calculate GST amounts, add GST to prices, remove GST from GST-inclusive prices, and determine final prices for invoices, quotations, products, services, and business transactions.
Frequently Asked Questions About GST
Find answers to common questions about calculating GST, adding or removing GST, GST rates, and GST-inclusive prices.
What is GST?+
GST, or Goods and Services Tax, is an indirect tax applied to the supply of goods and services in India. Businesses may need to calculate GST when preparing invoices, setting prices, creating quotations, and determining the total amount payable by customers.
What is a GST Calculator?+
A GST Calculator is an online tool that calculates the GST amount and the total price based on the original amount and selected GST rate. It can also help calculate the original price and GST component when the entered amount already includes GST.
How do I calculate GST on an amount?+
To calculate GST on an amount, multiply the original amount by the GST rate and divide the result by 100. For example, if the amount is ₹1,000 and the GST rate is 18%, the GST amount is ₹180 and the total price including GST is ₹1,180.
How do I add GST to a price?+
Enter the original price and select the applicable GST rate. The GST Calculator calculates the GST amount and adds it to the original price to give you the final GST-inclusive amount.
How do I remove GST from a GST-inclusive price?+
If the amount already includes GST, you can use the remove GST or reverse GST calculation. For an 18% GST rate, the original price can be calculated by dividing the GST-inclusive amount by 1.18. The difference between the original price and total amount is the GST component.
What are the common GST rates in India?+
Common GST rates include 5%, 12%, 18%, and 28%. The applicable rate depends on the type of goods or services and the relevant GST classification. Always verify the applicable rate for your specific product or service.
What is the difference between GST-inclusive and GST-exclusive prices?+
A GST-exclusive price is the amount before GST is added. A GST-inclusive price already contains GST. For example, if a product costs ₹1,000 before 18% GST, the GST-inclusive price is ₹1,180.
How is GST calculated on ₹1,000?+
At an 18% GST rate, GST on ₹1,000 is ₹180. The total price including GST is ₹1,180. The calculation is ₹1,000 × 18 ÷ 100 = ₹180.
Can I calculate GST for different GST rates?+
Yes. You can select the GST rate applicable to your calculation and instantly calculate the GST amount and final price. Common rates include 5%, 12%, 18%, and 28%.
Can I use a GST Calculator for invoices and quotations?+
Yes. A GST Calculator can be useful when preparing invoices, quotations, estimates, product prices, and other business documents where you need to calculate the GST amount and final payable price.
Is this GST Calculator free to use?+
Yes. Kaaf11's GST Calculator is free to use online. You can calculate GST without creating an account, registering, or installing additional software.
Is my calculation data stored on your servers?+
The GST calculation can be performed directly in your browser without requiring an account. The calculator does not need to send the amount you enter to a server simply to perform the calculation.