Calculation GuideVerified Formula

How GST is calculated

Inclusive versus exclusive prices, and why CGST/SGST/IGST splits are assumptions.

1Adding and removing tax

Price with GST = taxable amount × (1 + rate/100). Taxable amount = inclusive price / (1 + rate/100). Never treat a common preset as the legal rate for a transaction.

2Place of supply

Intra-state illustrations split GST equally into CGST and SGST. Inter-state illustrations apply the full amount as IGST. Actual classification depends on current law and the place of supply.

Try It Yourself With Interactive Calculators

Put these formulas into action right in your browser:

GST Add Calculator

Add GST to a taxable amount and preview CGST/SGST halves.

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GST Remove Calculator

Extract taxable value and GST from an inclusive price.

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IGST Calculator

Illustrate IGST as the full GST amount on an inter-state assumption.

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Guide Quick Overview

Category: Educational reference

Verified: Accurate mathematical algorithms with boundary validation.

Sections: 2 core learning steps.

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