Calculate GST instantly by adding or removing GST from any amount. No signup required.
Goods and Services Tax (GST) is an indirect tax levied on the sale of goods and services in India. Introduced to simplify the country's indirect tax system, GST replaced multiple central and state taxes with a single, unified tax structure.
Depending on the type of product or service, GST is charged at different rates. This calculator helps you quickly determine the GST amount, the original amount before GST, and the final amount after GST without performing any manual calculations.
Using the calculator is simple. Enter the amount, choose the applicable GST rate, and specify whether the amount already includes GST or excludes GST. The calculator instantly computes the GST amount, the amount before GST, and the final total.
If your entered amount already includes GST, select Includes GST to determine the original amount before tax and the GST component. If the amount is before tax, select Excludes GST (Add GST) to calculate the final amount payable after GST is added.
GST in India is levied at different rates depending on the type of goods or services being supplied. While the GST Council periodically reviews these rates, the most commonly used GST slabs are shown below.
| GST Rate | Typically Applicable To |
|---|---|
| 0% | Essential goods and GST-exempt supplies. |
| 5% | Selected food products, transport services and other notified goods. |
| 18% | The standard GST rate applicable to a majority of goods and services in India. |
| 40% | Applicable to certain luxury or special category goods where notified. |
If you are unsure which GST rate applies to your product or service, consult the latest notifications issued by the GST Council or seek professional advice from your accountant or tax consultant.
GST can be calculated in two different ways depending on whether the amount you have already includes GST or whether GST needs to be added to it. While the calculator above performs these calculations instantly, understanding the basic formulas can be helpful for businesses, freelancers and students.
If the entered amount is before GST, the GST amount is calculated by multiplying the amount by the applicable GST rate. The final invoice amount is then obtained by adding the GST to the original amount.
If the entered amount already includes GST, the calculator first determines the original amount before tax and then separates the GST component from the total. This is commonly referred to as reverse GST calculation and is useful when working with bills or invoices that already include tax.
Find answers to the most common questions about GST, GST-inclusive and GST-exclusive amounts, and how to use this GST Calculator.
GST (Goods and Services Tax) is an indirect tax levied on the supply of goods and services in India. It replaced multiple indirect taxes with a unified taxation system, making tax compliance simpler for businesses and consumers.
A GST-inclusive amount already contains GST. A GST-exclusive amount is before tax, and GST must be added to calculate the final amount payable.
Yes. Select Includes GST and enter the total amount. The calculator will determine the GST component and the amount before GST.
Calculating GST is only one part of the invoicing process. Once you know the correct GST amount, you'll still need to prepare a professional invoice, maintain customer records, keep track of payments, and manage your invoices efficiently.
Sliqrr is a modern online invoicing solution designed for freelancers, consultants, agencies, startups and small businesses. Create GST-compliant invoices, manage clients, record payments, send payment reminders and download professional PDF invoices — all from one place.
If you're creating invoices regularly, Sliqrr helps you spend less time on paperwork and more time running your business.
We're building a growing collection of free calculators and utilities to help freelancers, small businesses and professionals save time. Here are some of the tools coming soon to Sliqrr.
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