4.8(2,400 ratings)
India’s #1 GST Calculator

GST Calculator

Calculate GST inclusive & exclusive amounts with accurate CGST, SGST & IGST breakup.

₹
18%
%
Enter a valid amount to see GST breakdown

How to Use This GST Calculator

This free GST calculator helps you instantly compute Goods and Services Tax for any transaction in India. Whether you are a business owner, freelancer, or consumer, understanding GST breakup (CGST, SGST, IGST) is essential.

GST Exclusive vs Inclusive

  • Exclusive: Enter the base price. The calculator adds GST on top.
  • Inclusive: Enter the final price you paid or quoted. The calculator extracts the GST amount and shows the original taxable value.

Intra-State vs Inter-State GST

Indian GST has two types of supply:

  • Intra-State: When buyer and seller are in the same state. GST is split equally into CGST (Central) and SGST (State).
  • Inter-State: When buyer and seller are in different states (or imports). The entire GST is collected as IGST.

Common GST Rates in India

The most frequently used GST slabs are 5%, 12%, 18%, and 28%. Our calculator includes quick preset buttons for all these rates plus support for custom rates like 3% or 0.25%.

Why Use Our GST Calculator?

  • 100% accurate calculations using official GST formulas
  • Live results — no need to click "Calculate"
  • Clear visual breakdown of CGST, SGST, and IGST
  • Works completely offline after first visit
  • Copy full breakup with one click
  • Mobile-friendly design with large inputs

Frequently Asked Questions

What is the difference between GST exclusive and inclusive amount?

Exclusive means the price does not include GST — you add GST on top. Inclusive means the price already includes GST — we calculate the base value and GST amount from the final price.

When should I use Intra-state vs Inter-state GST?

Use Intra-state (CGST + SGST) when buyer and seller are in the same state. Use Inter-state (IGST) when they are in different states or for imports/exports.

How is CGST and SGST calculated?

For intra-state transactions, the total GST is split equally into CGST (Central GST) and SGST (State GST). For example, on 18% GST, CGST = 9% and SGST = 9%.

Does this GST calculator work offline?

Yes. Once you visit the page, the entire GST calculator works completely offline. All calculations happen in your browser.

Related Tools