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Taxes March 19, 2026 Tax Consultant @ eCalcy 8 min read

What is GST and How to Calculate It Online

A complete beginner's guide to Goods and Services Tax in India. Understand CGST, SGST, IGST and how to accurately calculate them.

What is GST and How to Calculate It Online

The Goods and Services Tax (GST) replaced the complicated web of indirect taxes in India. But determining the exact base price versus the taxed price often leaves small business owners scratching their heads.

Inclusive vs Exclusive GST

  • GST Exclusive: The product is ₹1000. GST of 18% is added on top. Final price = ₹1180.
  • GST Inclusive: The product is advertised at ₹1000 total. This means the GST is already baked into the price. To find the base cost, you reverse calculate it to ₹847.46.

Calculate GST Quickly

Find the exact SGST/CGST split with our free GST calculator without login.

Put this into practice

Start planning your taxes with our free GST Calculator.