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GST Calculator

Calculate GST amount, tax rates, and total price with our comprehensive GST calculator

GST Calculation
Enter amount and GST rate to calculate tax
GST Calculation Results
Your GST breakdown and total amount

Enter amount and GST rate to see calculation

About GST Calculator

GST (Goods and Services Tax) is a comprehensive indirect tax levied on the supply of goods and services. Our GST calculator helps you determine the tax amount and total price for your transactions.

GST Rates in India (from 22 September 2025):

  • 0% - Exempt items (essential goods)
  • 3% - Gold, silver and jewellery
  • 5% - Merit rate (daily essentials, many foods)
  • 18% - Standard rate (most goods and services)
  • 40% - Special rate (luxury and sin goods)

The old 12% and 28% slabs were merged into 5% and 18% on 22 September 2025. Check the rate for your exact HSN or SAC code on the GST portal before you file.

Calculation Types:

  • GST Exclusive: Add GST to the base amount
  • GST Inclusive: Remove GST from the total amount

Questions about gst calculator

What is the difference between inclusive and exclusive GST?
Exclusive means the price is before tax and GST is added on top. Inclusive means the price already contains the tax and it has to be worked backwards out of it — at 18 percent that is price x 18 / 118, not 18 percent of the price.
Which rate applies to my goods?
The slab depends on the HSN or SAC code, not on the kind of business. Since 22 September 2025 the main rates are 0, 5, 18 and 40 percent (3 percent for gold and silver), and the official rate finder on the GST portal is the only reliable source for a specific code.
What are CGST, SGST and IGST?
Within a state the tax splits in half as CGST and SGST. Across states it is one IGST at the full rate. The total is the same either way; only the split changes.
Is this a GST invoice?
No. This works out the tax. A tax invoice needs your GSTIN, the HSN or SAC code, the place of supply and the tax split, and should be issued from billing software.

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