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GST Calculator

Calculate GST amount, CGST, SGST, IGST for any amount and tax rate.

Updated Mar 2026100% Private — runs in browser

How to Use GST Calculator

  1. 1

    Enter the original amount (either base price or GST-inclusive price).

  2. 2

    Select the applicable GST rate: 5%, 12%, 18%, or 28%.

  3. 3

    Choose whether the amount already includes GST or excludes GST.

  4. 4

    View the GST amount, CGST, SGST/IGST breakdown, and final price instantly.

  5. 5

    Toggle between intra-state and inter-state to switch between CGST+SGST and IGST.

About GST Calculator

Our free GST calculator India handles all five GST rate slabs — 0%, 5%, 12%, 18%, and 28% — for both exclusive (add GST) and inclusive (extract GST) scenarios, with a full CGST/SGST/IGST breakdown.

Key Features

  • Add or Remove GST: Calculate GST-inclusive price from base price, or extract GST from a total.
  • CGST & SGST Breakdown: Shows split for intra-state transactions (Central + State GST).
  • IGST for Inter-State: Toggle to show Integrated GST for transactions across state borders.
  • All GST Slabs: Covers 5%, 12%, 18%, and 28% rate slabs.

Who Is This For?

Business owners raising GST invoices, accountants filing GST returns, freelancers calculating tax on services, shoppers verifying bills, and anyone who needs quick, accurate GST computation for Indian transactions.

Privacy & Security

Runs 100% in your browser — no signup, no uploads, no data stored.

Frequently Asked Questions about GST Calculator

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