GST Calculator Online – Free GST Inclusive & Exclusive Calculator (2026)

Our free online GST calculator helps you estimate your final prices or taxable amounts. Perfect for quickly calculating CGST, SGST, and IGST for invoices and everyday purchases.

Base Amount$ 0.00
GST Amount (18%)$ 0.00
Total Amount$ 0.00
CGST (9%)$ 0.00
SGST (9%)$ 0.00
For inter-state sales, IGST of 18% is applied. For intra-state (within same state), CGST (9%) and SGST (9%) are applied equally.

Goods and Services Tax (GST) is used in multiple countries. Our tool provides a simple and fast way to calculate both inclusive and exclusive GST amounts in seconds.

What is a GST Calculator?

A GST calculator is a digital tool that handles the complex math behind Goods and Services tax. It allows you to find out how much tax is included in a final price or how much you need to add to an exclusive base price. This is crucial for accurate billing and tax compliance for businesses of all sizes.

How to Use GST Calculator

Follow these easy steps:

  • Select Mode: Choose 'Add GST' or 'Remove GST'.
  • Enter Amount: Input your base price or final price.
  • Select GST Rate: Choose from standard slabs like 5%, 12%, 18%, or 28%.
  • Calculate: Instantly view the breakdown of CGST, SGST, and total amounts.

Formula

To add GST: [Amount] x (1 + [Rate] / 100)

To remove GST: [Amount] / (1 + [Rate] / 100)

Example Calculation

If a product costs 1,000 inclusive of 18% GST, the taxable value is:

Total Cost: 1,000

GST Rate: 18%

Actual Taxable Value: 847.46

GST Amount: 152.54

Benefits of Using Our Online Tool

  • Quick and easy: Designed specifically for fast, daily use on any device.
  • Accurate IGST/CGST Breakdowns: Get the detailed splits you need for bookkeeping.
  • No Login Required: Completely free for all users.
  • Multi-Slab Support: Instantly switch between any tax rates.

FAQ

What is a GST Calculator?

A GST calculator helps you add or subtract Goods and Services Tax (GST) from a price. It's useful for businesses and consumers to understand the tax component of a transaction.

How to Use GST Calculator?

Choose whether you want to Add GST (exclusive price) or Remove GST (inclusive price). Enter the amount and the GST rate percentage to see the breakdown.

What are CGST, SGST, and IGST?

In many regions, GST is split into components: CGST (Central), SGST (State), and IGST (Integrated). Our tool provides these details for transparent billing.

Can I use standard GST rates?

Yes, our tool provides common rates like 5%, 12%, 18%, and 28% for quick calculation.

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