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GST Calculator

Instant GST calculation for inclusive and exclusive amounts.

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About GST Calculator

The GST Calculator on Zynocode Labs lets you instantly compute Goods and Services Tax (GST) for any transaction in India. Whether you need to calculate GST-inclusive or GST-exclusive amounts, this tool handles all standard GST slabs — 5%, 12%, 18%, and 28%.

How to Use the GST Calculator

  1. 1Enter the base amount (cost of goods or services)
  2. 2Select the applicable GST rate (5%, 12%, 18%, or 28%)
  3. 3Choose whether the amount is inclusive or exclusive of GST
  4. 4Instantly view CGST, SGST/UTGST, IGST breakdown and the final amount

Frequently Asked Questions

What GST rates are supported?

The calculator supports all standard slabs: 0%, 5%, 12%, 18%, and 28%, covering most goods and services in India.

What is the difference between CGST and SGST?

CGST (Central GST) and SGST (State GST) are both levied at half the GST rate on intra-state transactions. IGST applies to inter-state transactions at the full rate.

Can I use this for reverse GST calculation?

Yes. Select "GST Inclusive" mode to back-calculate the base price and tax from an all-inclusive amount.