GST Calculator: Calculate Your GST Amount Online

A GST calculator can save you time and hassle by doing the GST calculation for you quickly and accurately.

GST calculator

A Goods and Service Tax Calculator is a ready-to-use online tool that helps you figure out how much GST you owe for a month or quarter, depending on the goods. The GST calculator is good for people who buy, sell, and conduct various kinds of business. Using a simplified Goods and Service Tax Calculator online helps you figure out the gross or net price of a product depending on the amount and gives you a breakdown of the percentage-based GST rates. It helps divide the rate between the central goods and services tax (CGST) and the state goods and services tax (SGST) or figure out the correct IGST.

Advantages of GST Calculator

Here's why utilizing an online GST calculator can be advantageous:

Ease of use and time-saving: Online GST calculators offer simplicity and speed, delivering instant results without the need for manual computations, thus saving time.

Accuracy: These calculators minimize the chances of errors inherent in manual calculations, ensuring precise results.

Breakdown of tax components: Taxpayers can accurately determine individual amounts for CGST, SGST, and IGST, which can be challenging to calculate manually using the GST tax formula.

Estimation of gross price: Users can also estimate the gross price for their chosen items, providing a comprehensive understanding of their tax obligations.

Once taxpayers have grasped their tax liabilities and have all the necessary details regarding their GST-related transactions, it's essential to file GST return within the stipulated due dates. Failure to comply with these regulations may result in additional charges.

How does the GST calculator work?

The GST Calculator operates based on a straightforward formula:

GST Amount = (Selling Price x GST Rate) / 100.

Here, the Selling Price is determined by adding the Cost Price and Profit Amount. The calculator factors in the Selling Price, representing the total value of goods or services subject to GST, and the GST rate, which fluctuates based on the nature of the goods or services.

The Total Selling Price is then computed by adding the Selling Price, GST Amount, and, if applicable, Cess Amount.

How can a GST calculator help you?

A GST calculator can help you in many ways, such as:

  • Calculate the GST amount and the net price of goods and services based on the GST rate and the original price. This can save you time and hassle by doing the GST calculation for you quickly and accurately.
  • Understand the GST structure and rates better and plan your budget accordingly. You can choose from different GST rates and categories, such as CGST, SGST, IGST, and UTGST, and see how they affect the GST amount and the net price.
  • It can help you to comply with the GST rules and regulations and avoid any penalties or fines. You can use the GST calculator to check the GST amount and the net price of your invoices, bills, receipts, and other transactions and ensure that they are correct and consistent.

What is GST (Goods and Services Tax)?

Goods and Services Tax or GST is a dynamic taxation system that is implemented in India. It simplifies and unifies the indirect taxation across the country through a comprehensive tax structure that includes goods and services under a singular tax slab. GST is designed to replace all indirect taxes and aims to remove tax barriers that existed between states. It has helped in enhancing the ease of doing business and creating a level playing field for businesses across the country. With the implementation of GST, businesses can avail numerous benefits such as better compliance, a significant reduction in tax evasion, and streamlined tax procedures. It has also helped to increase transparency and boost economic growth. Therefore, if you are looking for an unsecured business loan, then knowledge of GST is critical for a successful loan application process.

What is the GST inclusive amount?

The GST inclusive amount is the total cost of goods or services that includes the Goods and Services Tax (GST) in India. Understanding the GST inclusive amount allows you to plan their finances accurately by factoring in the additional cost of GST. By taking this approach, you can make informed financial decisions and avoid unnecessary financial burden.

What is the GST exclusive amount?

The GST exclusive amount refers to the cost of goods or services without the inclusion of the Goods and Services Tax (GST) in India. It is important for you to understand the GST exclusive amount when making purchases to accurately calculate the total expenditure.

What is GSTIN?

GSTIN stands for Goods and Services Tax Identification Number. It is a unique 15-digit alphanumeric code assigned to every person or entity that is registered under the Goods and Services Tax (GST) regime in India. The GSTIN is based on the PAN (Permanent Account Number) of the taxpayer and contains information such as the state code, registration number, entity code, checksum digit, and defaulting status.

The GSTIN is used for various GST-related procedures, such as filing returns, claiming input tax credits, and making payments. The GSTIN verification can be done online on the official GST portal. The GSTIN helps to ensure transparency and compliance in the GST system and prevent tax evasion.

Tax components under GST

There are 4 components of GST:

Central Goods and Services Tax (CGST): Under GST, intra-state transactions are subject to the Central Goods and Services Tax (CGST), an indirect tax.

State Goods and Services Tax (SGST): Intra-state transactions related to the supply of goods and services are subject to this tax. Each respective state government is responsible for collecting this.

Union Territory Goods and Services Tax (UTGST): This is an indirect tax levied on the intra-state supplies of goods and services.

Integrated Goods and Services Tax (IGST): This is a separate tax included under GST. Imports and exports as well as interstate sales of goods and services are subject to this tax. The central government administers and collects the IGST in accordance with the IGST Act. It then divides the accrued tax among the various states involved in the sales.

How do you calculate GST?

A GST calculator is an online tool that you can use to figure out how much GST you owe for a given month or quarter, based on the products.

Simply follow these 2 steps:

  • Type in the net price of your service or product and the GST tax slabs that apply, such as 5%, 12%, 18%, or 28%.
  • Click "Calculate" to see the final or gross price of goods and services, and the tax owed.

Calculating Intra-state GST

For transactions within the same state, CGST and SGST/UTGST are computed by dividing the applicable GST rate by 2. Hence, CGST and SGST/UTGST rates are typically half of the total GST rate.

Inter-state GST computation:

For transactions between different states, IGST is determined by the applicable GST rate. Note that GST Compensation Cess, where relevant, should be added to the GST rate for accurate tax calculations.

GST calculation formula

To calculate GST, taxpayers can apply the following formulas:

To include GST in the base amount:


GST Amount = (Original Cost * GST%) / 100

Total Price = Original Cost + GST Amount

To exclude GST from the base amount:

Deduct GST

GST Amount = Original Cost - (Original Cost * (100 / (100 + GST%)))

Total Price = Original Cost - GST Amount

Example for understanding the GST calculation



Tax @ 10%

Tax liability to be deposited to the government

Invoice Total


Rs. 1,000

Rs. 100

Rs. 100

Rs. 1,100

Warehouse (adds ₹250 for labelling & packaging)

Rs. 1,250

Rs. 125

Rs. 25

Rs. 1,375

Retailer (advertisement cost of ₹300 added)

Rs. 1,550

Rs. 155

Rs. 30

Rs. 1,705


Rs. 1,550


Rs. 1,705



How to use GST Calculator?

At Bajaj Finance, we provide taxpayers with a dedicated and professional GST Calculator tool. This tool simplifies GST calculation, especially for taxpayers dealing with differential GST rates.

Follow these steps to calculate GST:

  1. Choose GST Inclusive or GST Exclusive.
  2. Input the original amount.
  3. Select the applicable GST rate.
  4. Click Calculate to view the total GST amount and Pre-GST/Post-GST figures according to your original requirement.

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Results generated by the calculator(s) are indicative in nature. The interest rate applied on the loan will depend on the prevailing rates at the time of loan booking.

The calculator(s) are not intended to provide its users/ customers with results that are either certified by Bajaj Finance Limited (“BFL”) or are an obligation, assurance, warranty, undertaking or commitment, financial and professional advice by BFL, under any circumstances. The calculator(s) is only a tool that assists the users/ customers arrive at results of various illustrative scenarios generated from data input by the user/ customer. The use of the calculator is entirely at the risk of the user/ customer, BFL is not responsible for any reason, for any errors in any outcome resulting from the use of the calculator.

Frequently asked questions

What is GST?

Goods and Service Tax (GST) is an indirect tax that everyone who makes, sells, or buys consumer goods or services is liable to pay. It is a tax that is based on where the value is going and has more than one step. The Indian Parliament passed the act on March 29, 2017, and it went into effect on July 1, 2017. GST has made it easier for businesses to pay taxes because it has replaced all indirect taxes like central excise duty, service tax, customs duty, VAT, Octroi, and surcharges.

What is the percentage of GST in India?

The percentage of GST in India varies depending on the type of goods or service. There are four tax brackets, namely 5%, 12%, 18%, and 28%.

What are the benefits of using an online GST calculator?

The online GST calculator lets you figure out either the gross or net price of a product based on the GST rate as a percentage. It saves time and makes it less likely that a person will make a mistake when figuring out the total cost of goods and services.

How to calculate GST using a GST calculator?

You can easily use the online GST calculator by doing the following:

  • Enter the net price of a service or goods and the GST slabs, such as 5%, 12%, 18%, and 28%.
  • Click on the "Calculate" button to see the final or gross price of goods and services.

GST calculation formula:

The calculator uses the below-mentioned formula to make it easy for businesses, manufacturers, wholesalers, and retailers to figure out GST:

Simple GST calculation

  • Add GST:
    GST amount = (Original cost x GST%)/100
    Net price = original cost + GST amount
  • Remove GST:
    GST amount = Original cost - [Original cost x {100/(100+GST%)}]
    Net price = Original cost - GST amount


Rate (%)

Original cost of goods




Cost of goods sold


GST calculation for manufacturers:


Rate (%)

Pre- GST

Cost of product



Excise duty


















Final invoice to the wholesaler



At a cost of Rs.10,000, the manufacturer saves Rs.1405, which is equivalent to a 14% tax savings. This lowers costs for manufacturers, and the savings are eventually passed on to wholesalers, retailers, and consumers.

GST calculation for wholesalers and retailers:


Rate (%)

Pre- GST

Cost of product


















Final invoice to the consumer



GST brings down the price of a product, so consumers pay less for goods even though wholesalers and retailers make the same amount of profit.

How to calculate GST in case of reverse charge?

Calculating a reverse charge is not very different from figuring out GST. A reverse charge is when the person who buys the goods has to pay the GST instead of the person who sells them. In both situations, the tax is the same. For example, if you bought items worth Rs. 10,000. At 18%, the GST to be paid will be Rs. 1,800. If CGST and SGST are charged, each will cost Rs. 900. The only difference is that in a reverse charge, the tax amount, which in this case is Rs. 1,800, is due by the recipient.

What is a GST calculator?

A GST calculator is a tool used to determine the Goods and Services Tax (GST) amount payable on a transaction. By inputting the cost and applicable GST rate, the calculator computes the GST amount, aiding in accurate tax calculations for businesses and individuals.

Who can use the GST calculator?

Anyone, from small business owners to individuals, can utilise the GST calculator. It is a handy tool for accurately determining Goods and Services Tax liabilities, ensuring compliance and effective financial planning. Any buyer, manufacturer, wholesaler or retailer can use the calculator by following 2 simple steps:

  • Type in the net price of your service or product and the GST tax slabs that apply, such as 5%, 12%, 18%, or 28%.
  • Click "Calculate" to see the final or gross price of goods and services, and the tax owed.
Is GSTIN mandatory for business in India?

Yes, it is mandatory for businesses registered under the GST to have a GST identification number (GSTIN) in India. The GSTIN is a unique 15-digit number assigned to every business that is registered under the Goods and Services Tax (GST) system.

What do GST returns entail?

GST returns encompass comprehensive information about your sales, purchases, taxes collected (output tax), and taxes paid (input tax). After filing GST returns, you settle the resulting tax liability owed to the government.

How do you calculate 18% GST on the total?

To calculate 18% GST on the total, you simply multiply the total amount by 18% (or 0.18). For example, if the total amount is Rs. 1000, the GST amount would be Rs. 180 (1000 x 0.18).

How do I calculate my GST?

To calculate GST on your total sales, you need to first determine the GST rate applicable to your product or service. Once you know the applicable rate, you can multiply the value of your sales by the GST rate to calculate the GST amount.

How do I calculate GST on my bill?

To calculate GST on your bill, you need to first determine the GST rate applicable to the item(s) on your bill. Once you know the applicable rate, you can multiply the value of the item(s) by the GST rate to calculate the GST amount, and then add it to the total to get the final amount payable.

How can a buyer use the GST calculator?

Input the net price before GST and specify the GST rate. The tool will then compute the total production cost, CGST, SGST, and overall tax amount.

How can a manufacturer / wholesaler use the GST calculator?

Input the production cost or cost of goods, profit ratio percentage, and GST rate. The tool will then display the total production cost, along with CGST, SGST, and the overall tax amount.

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