Free GST Calculator (India)

Calculate GST for goods and services quickly

Support for CGST, SGST, IGST calculations

Reverse GST & Profit Margin calculators

Basic Reverse Profit HSN/SAC Summary

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All calculations are performed locally in your browser. No data is stored or uploaded.

Basic GST Calculator

Amount (₹)

GST Rate

Amount Type

Exclusive of GSTInclusive of GST

Supply Type

Intra-state (CGST + SGST)Inter-state (IGST)

GST Details

Taxable Value

₹10000.00

Base amount before GST

Total GST

₹1800.00

Total GST amount

Total Amount

₹11800.00

Final amount to pay

GST Rate

18%

Applicable GST rate

GST Breakdown

CGST

₹900.00

9% (Central)

SGST

₹900.00

9% (State)

IGST

₹0.00

18% (Integrated)

GST Rate Explanation

18% GST is commonly applicable to IT services, SaaS, consulting, telecom services, financial services, and most industrial goods.

What is GST?

GST (Goods and Services Tax) is a comprehensive indirect tax levied on the supply of goods and services in India. It replaced multiple indirect taxes like VAT, Service Tax, and Excise Duty. Our GST calculator helps you compute CGST (Central GST), SGST (State GST), and IGST (Integrated GST) components accurately for all GST slabs: 5%, 12%, 18%, and 28%.

How to Calculate GST

Enter the amount

Input either the base amount (exclusive of tax) or total amount (inclusive of tax)

Select GST rate

Choose the applicable GST slab: 5%, 12%, 18%, or 28% based on your product/service category

Choose supply type

Select intra-state (CGST + SGST) for same-state transactions or inter-state (IGST) for different states

View GST breakdown

See instant calculation of taxable value, GST amount, and total value with detailed component breakdown

Why Use Our GST Calculator?

All GST slabs supported

Calculate GST for all standard rates: 0%, 5%, 12%, 18%, and 28%

CGST/SGST/IGST breakdown

Get detailed component-wise split for accurate tax filing

Reverse GST included

Extract base price from GST-inclusive amounts with our reverse calculator

Business friendly

Perfect for small businesses, traders, and professionals filing GST returns

Frequently Asked Questions

Enter your net amount, select the appropriate GST slab (5%, 12%, 18%, or 28%), and the tool will instantly show you the Gross Amount and the CGST/SGST/IGST breakdown.

Yes, our tool includes a Reverse GST feature where you can enter the total amount (inclusive of tax) to find the original price before GST.

The primary GST slabs in India are 0% (exempted), 5%, 12%, 18%, and 28%. Our calculator supports all these standard rates.

Yes, our calculator follows the latest GST guidelines provided by the Government of India for CGST, SGST, and IGST calculations.