How to Use Our GST Calculator

This tool simplifies GST calculations. Whether you’re a business owner or a consumer, you can quickly find the final price of goods and services.

Select Calculation Type: Choose ‘Add GST’ if you have the base price, or ‘Remove GST’ if you have the final price.
Enter Amount: Input the price into the text field.
Choose GST Rate: Select the applicable GST slab (0%, 5%, 12%, 18%, or 28%).
View Results: The calculator instantly displays the Base Amount, CGST, SGST, and the total Gross Amount.

Understanding GST Calculation

Goods and Services Tax (GST) in India is a comprehensive indirect tax. It is typically split into two components for intra-state transactions:

CGST (Central GST): Collected by the Central Government.
SGST (State GST): Collected by the State Government.

For a given GST rate, CGST and SGST are each half of the total rate. For example, on an 18% GST slab, CGST is 9% and SGST is 9%.

Formulas Used:

To Add GST:

GST Amount = Base Amount × (GST Rate / 100)

Gross Amount = Base Amount + GST Amount

To Remove GST:

Base Amount = Gross Amount / (1 + (GST Rate / 100))

GST Amount = Gross Amount - Base Amount

Frequently Asked Questions (FAQ)

What are the latest GST slabs in India for 2025?

The primary GST slabs are 0% (Nil Rated), 5%, 12%, 18%, and 28%. Different goods and services are categorized into these slabs by the GST Council.

What is the difference between CGST and SGST?

CGST is the portion of the tax that goes to the central government, while SGST is the portion that goes to the state government. For any intra-state transaction, the total GST is split equally between these two.