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Tax

GST Calculator

Quickly compute the GST on any invoice or quote.

₹
₹1₹1,00,00,000
%
0%28%
Base Amount₹10,000
GST Amount₹1,800
Total (incl. GST)₹11,800
SIP

Formula

GST = Base × Rate ÷ 100 | Total = Base + GST

Where

  • Base= Pre-tax amount
  • Rate= Applicable GST rate (5%, 12%, 18%, 28%)

How to use the GST Calculator

  1. 1Enter the base amount.
  2. 2Pick the GST slab.

Why it matters

  • Instant invoicing math.
  • Compare quotes inclusive vs exclusive of GST.

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Frequently asked questions

Which GST rate applies to my product?+

Check the HSN/SAC code — it determines the slab (0%, 5%, 12%, 18% or 28%).