GST Calculator

Calculate the applicable GST amount on the purchase of goods and services.

GST Exclusive

GST Inclusive

Total GST


Post-GST Amount


The implementation of Goods and Service Tax (GST) on July 1st, 2017, was a game-changer. It replaced a complex system of multiple indirect taxes, creating a single, unified market. This significant change in India's tax structure aimed to streamline taxation, reduce corruption, and boost economic growth. The GST system, with its far-reaching implications for various industries, marked a significant milestone in India's economic history.

What are the Benefits of the GST Calculator?

Using a GST calculator is a breeze. It provides you with all the necessary information about your tax payments. Since everything you purchase is taxed as per GST, this online calculator simplifies the complex calculations for you. Within a few seconds, you can find out exactly how much tax you'll be paying.

The formula for Calculating GST Amount

There is a simple formula to calculate GST:

GST Amount = (Original Cost x GST Rate Percentage) / 100

Net Price = Original Cost + GST Amount

Let's say the original cost of a product is Rs. 1,000, and the GST rate is 18%.

GST Amount = (1000 x 18) / 100 = 180

Net Price = 1000 + 180 = 1180

The GST amount would be Rs. 180, and the net price, including GST, would be Rs. 1180.

How to use the INDmoney GST Calculator?

You can use our GST calculator by simply following the below steps -

  • Choose from the option of GST Exclusive and GST Inclusive
  • Input the total amount and tax slab
  • The total GST, pre and post-GST amount will be displayed immediately

What is the Pre-GST Amount?

This refers to the price of a good or service before the GST. It represents the base cost without any indirect taxes, such as excise duty, VAT, octroi, etc., that existed previously.

What is the Post-GST Amount?

This signifies the final price you pay for a good or service after including the applicable GST rate. It essentially reflects the combined cost of the pre-GST amount and the calculated GST amount.

What is the Total GST Amount?

This represents the actual tax levied on the good or service under the GST regime. It's calculated by multiplying the pre-GST amount by the specific GST rate applicable to that category. This value is then added to the pre-GST amount to arrive at the final post-GST amount.

What is a Tax Slab?

The GST system categorizes goods and services into different tax brackets, known as tax slabs. These slabs are based on the perceived necessity and value of the items. Each slab carries a designated GST rate. For instance, essential items like milk or bread might fall under a 0% tax slab, while luxury goods might belong to a higher slab with a 28% GST rate. Understanding the applicable tax slab is essential as it helps you anticipate the final cost of a product or service under the GST regime.

Frequently Asked Questions

  • How many GST slabs are there?

    There are a total of four GST tax slabs- 5%, 12%, 18%, and 28%.

  • What is the applicable GST rate on Covid medicines?

    Covid medicines fall under the category of 5% GST slab. The previous GST slab was 12%, which was reduced to 5% after the 44th GST council meeting.

  • What is GSTIN and is it necessary for a business?

    Enterprises have to register themselves under GST and get a 15-digit unique identification number called GSTIN. This is the replacement for TIN (Tax Identification Number).

  • Do all products come under GST?

    No, not all products come under GST. Some items are excluded from GST and some taxes are levied as per the traditional tax structure.


  • What are CGST and SGST?

    CGST and SGST stand for Central GST and State GST respectively. The CGST and SGST are the two components in total GST. If a product has 18% applicable GST on its price, 9% of it is CGST and the other 9% is SGST.


  • What is the GST on Gold?

    Gold attracts a GST of 3%. However, if the gold is converted into ornaments and jewelry, 5% GST is levied on the making charges.

  • How to calculate the GST percentage from the total amount?

    You can calculate the GST percentage by:

    (GST Amount/Original price of the product) x 100