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GST Calculator

Add or remove GST at 5%, 12%, 18% or 28% with CGST/SGST split

Tax Calculator

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📐 Formula Used

GST Amount = (Base Price × GST Rate) / 100
Total Price = Base Price + GST Amount
CGST = SGST = GST Amount / 2 (intra-state)

Frequently Asked Questions

What is GST?

GST (Goods and Services Tax) is a unified indirect tax levied in India on the supply of goods and services, replacing multiple cascading taxes.

What are the GST slabs in India?

India has four main GST slabs: 5% (essential goods/services), 12% (standard goods), 18% (most services), and 28% (luxury/sin goods). Some goods have 0% (exempt) or 3% (gold).

What is CGST and SGST?

For intra-state transactions, GST is split equally between CGST (Central) and SGST (State). For inter-state, IGST (Integrated) equals the total GST rate.

How do I reverse-calculate GST?

If the GST-inclusive price is ₹118 (at 18%), the base price = 118 / 1.18 = ₹100. Our calculator handles this automatically.