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GST Calculator

Add GST to a price or take it out of an inclusive amount. See CGST, SGST and IGST instantly.

  • Add or remove GST
  • CGST / SGST / IGST
  • Total in words
GST rate
Mode
Supply
How to use

How to use the GST Calculator

  1. Enter amount

    Price before or after GST.

  2. Choose rate and mode

    Add GST or remove GST.

  3. Read the split

    Taxable value, CGST, SGST/IGST and total.

Questions

GST Calculator FAQs

How do I remove GST from an inclusive price?

Divide by (1 + rate). For ₹1,180 at 18%: 1,180 ÷ 1.18 = ₹1,000 taxable value and ₹180 GST.

Is GST charged on export of services?

Export of services is zero-rated — no IGST under LUT.

Last reviewed 13 October 2026. General information, not legal or tax advice.

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Guides worth reading

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Invoicing & Documents

CGST, SGST or IGST? Choosing the Right Tax on an Invoice

CGST, SGST or IGST? Learn how intra-state vs inter-state supply decides the tax, how place of supply works, where exports fit, and see worked invoice examples.

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Invoicing & Documents

How to Use the Free GST Invoice Generator (Step by Step)

Step-by-step guide to the free GST invoice generator: what to keep ready, filling each section, choosing CGST/SGST or IGST and avoiding common errors.

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GST & Tax

Does the EDF Change Your GST or Income Tax? (No — Here's Why)

EDF, GST and income tax are separate: the EDF is a FEMA declaration, while GST zero-rating, LUT and income tax rules carry on unchanged. See how they connect.

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GST & Tax

GSTR-1 Reporting of Export of Services: Table 6A

How to report export of services in GSTR-1 Table 6A: with or without IGST, invoice values in rupees, amendments, credit notes and reconciling with your EDF.

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GST & Tax

Exchange Rate for GST on Export Invoices: Which Rate to Use

Which exchange rate applies for GST on a foreign-currency export invoice? The valuation rule, LUT vs IGST cases, and staying consistent with the EDF.

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GST & Tax

GST Refund on Export of Services: Process and Common Delays

GST refund on export of services: LUT vs IGST routes, filing RFD-01, the FIRA and invoice proof officers check, and the delays you can avoid.

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