Free GST Calculator (India) for Inclusive & Exclusive Pricing
Calculate GST instantly with an accurate IGST, CGST, SGST, and UTGST split. Choose exclusive or inclusive pricing, select the place of supply, and get a clear breakdown for invoices and quotations.
Need to issue a GST invoice?
Use our invoice tool to generate tax-ready documents in minutes.
GST rates verified as per current law on: 2026-01-11
GST calculator overview
This page is pre-rendered for SEO and includes GST inclusive/exclusive rules, supply type selection, and an IGST/CGST/SGST/UTGST breakdown. Use the live calculator after the page loads to compute your exact tax amounts.
Sample base amount
₹100.00
GST @ 18%
₹18.00
Total payable
₹118.00
Inclusive vs Exclusive GST
Exclusive means GST is added to the base value. Inclusive means GST is extracted from the total amount.
Supply Type Breakdown
Interstate → IGST. Intrastate → CGST + SGST. Union Territory → CGST + UTGST.
Invoice-ready results
Use the totals to match invoice line items with the Free GST Invoice Generator.
GST Calculator FAQs
What is GST?
GST (Goods and Services Tax) is a unified indirect tax in India that applies to the supply of goods and services. It generally replaces multiple legacy indirect taxes with a single tax framework.
How to calculate GST in India?
For exclusive pricing, GST = base amount × GST rate. For inclusive pricing, base amount = total ÷ (1 + GST rate) and GST = total − base amount.
What is the difference between GST inclusive and exclusive?
Exclusive means GST is added on top of the base amount. Inclusive means the entered amount already includes GST and the tax is extracted from the total.
What is IGST vs CGST vs SGST vs UTGST?
IGST generally applies to interstate supplies. CGST + SGST generally apply to intrastate supplies. For eligible Union Territories without a legislature, CGST + UTGST generally apply.
When does IGST apply vs CGST+SGST?
IGST generally applies when the supplier and place of supply are in different states or territories. CGST+SGST generally apply when both are within the same state.
Is this GST calculator free?
Yes. This GST calculator is free to use and runs instantly in your browser.
Does GST rate vary by product?
Yes. GST rates can vary by product or service category, and rates may change by notification. Always confirm the applicable rate for your specific supply.