GST Calculator

HostBooks GST Calculator: Calculate Goods and Services Tax Online

Quickly Calculate GST Amount, Post GST Amount and Pre GST Amount as per applicable rates.

Total GST

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Post GST Amount

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What is GST Calculator

GST Calculator is a online tool designed to assist individuals, businesses, and organizations in calculating the amount of Goods and Services Tax (GST) applicable on a certain amount.

The calculator considers the total value of supply of the goods or services and applicable GST rate to provide accurate GST amount to be charged on the value.

Benefits of Using HostBooks Online GST Calculator

Using out Goods and Service Tax calculator offers several benefits for individuals, businesses, and organizations:

  1. Accuracy: GST calculations done manually, or normal calculators are prone to errors. A simple typo could lead to GST compliance issues. The GST Calculator ensures accurate calculations by automating the process and eliminating the possibility of manual mistakes.
  2. Timesaving: The calculator performs calculations instantly, saving considerable time compared to manual calculations.
  3. Ease of Use: HostBooks GST amount calculator is user-friendly, with intuitive interfaces and straightforward input fields. Simply enter the original price and select appropriate GST rate and get exact GST payable/ receivable.
  4. Versatility: You can also calculate total amount based on GST rate and total amount as well as GST on value added amount only.
  5. Cloud Access: HostBooks accelerator . This convenience is particularly beneficial for businesses operating across multiple locations or individuals who need to calculate GST on the go.

GST Calculation Formula

The calculation of GST involves applying the appropriate tax rates to the taxable value of the goods or services being supplied. There are two ways to calculate GST amount using the tool

Calculating GST from the Amount Excluding GST

The GST exclusive amount means the original amount before the Goods and Services Tax (GST) is applied.

  • GST Amount = (Tax Rate/100) x Amount Excluding GST
  • Total Amount (including GST) = Amount Excluding GST + GST Amount


Let's say you have a product with a price of ₹1,000, and the applicable GST rate is 18%.

  • GST Amount = (18/100) x ₹1,000 = ₹180
  • Total Amount (including GST) = ₹1,000 + ₹180 = ₹1,180

Calculating GST from the Amount Including GST

The GST inclusive amount is the total amount, which includes both the original amount and the GST component

  • GST Amount = Amount Including GST - (Amount Including GST / (1 + (Tax Rate/100)))
  • Amount Excluding GST = Amount Including GST - GST Amount


Let's consider the same product with a price of ₹1,180, which already includes the GST amount of ₹180. The applicable GST rate is 18%.

  • GST Amount = ₹1,180 - (₹1,180 / (1 + (18/100))) = ₹180
  • Amount Excluding GST = ₹1,180 - ₹180 = ₹1,000

In both cases, the "Tax Rate" represents the applicable GST rate, expressed as a percentage.

How to Use Our GST Tax Calculator

Here's a quick guide on using HostBooks' GST calculator tool:

Step 1

Determine whether you want to calculate GST on an inclusive or exclusive basis, depending on your requirement.

This distinction refers to whether the GST amount is already included in the original amount or needs to be added separately.

Step 2

Enter the original amount in the designated field. This is the amount before GST is applied.

Step 3

Select the appropriate GST rate from the drop-down menu provided by the tool. This should reflect the applicable tax rate for the goods or services you are calculating GST for.

Step 4

Click on the "Calculate" button to obtain the results.

The Goods and Service tax Calculator tool will display the total GST amount and provide the option to view the pre-GST and post-GST amounts, based on your initial selection.

GST Rates in India

0% 0% 0% Essential goods and services, such as fresh fruits and vegetables, grains, milk, healthcare services, education services, and select exports
5% 2.5% 2.5% Processed food items, clothing, basic household items like sugar and tea, and some transportation services (economical)
12% 6% 6% Medicines, clothing above a certain price threshold, mobile phones, financial services, travel (business)
18% 9% 9% Most of the consumer durables like electronics, hotel accommodation, IT services, restaurant services
28% 14% 14% Luxury items, automobiles, tobacco products, aerated drinks, and other demerit goods.

If you want to know exact GST rates of Goods and Services with HSN/SAC code, use out GST rate finder tool.

FAQs About GST Calculation

To calculate 18% GST on an amount, you can use the following formula:

GST Amount = (18/100) x Amount

To calculate GST on an amount, you can use the formula:

GST Amount = (Tax Rate/100) x Amount

You would either need taxable amount or total amount along with GST rate to calculate GST.

The GST rates in India are 0%, 5%, 12%, 18%, and 28%. These rates represent the percentage of GST

applicable to the value of goods or services being supplied.

In India, the Goods and Services Tax (GST) consists of four types: Central Goods and Services Tax (CGST).

State Goods and Services Tax (SGST), Integrated Goods and Services Tax (IGST), Union Territory Goods

and Services Tax (UTGST).

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