GST Calculator

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Calculation Result

The final breakdown of your calculation.

Base Amount₹0
GST (18%)₹0
Total Amount₹0
Guide & Methodology

About the GST (Goods & Services Tax) Calculator

Calculate Inclusive and Exclusive Goods and Services Tax (GST) across statutory tax slabs (5%, 12%, 18%, 28%) with CGST and SGST splits.

What this calculator does

  • Calculates GST added on top of a net base price (GST Exclusive).
  • Calculates original base price and tax component embedded inside a gross retail price (GST Inclusive).
  • Splits GST into Central GST (CGST) and State GST (SGST) for intra-state sales, or IGST for inter-state transactions.

How it Works & Key Inputs

Step 1

Select Calculation Type

Choose GST Exclusive (adding tax) or GST Inclusive (removing tax).

Step 2

Enter Amount

Input the transaction invoice value.

Step 3

Choose GST Rate Slab

Select applicable slab: 0%, 5%, 12%, 18%, or 28%.

Core Calculation Parameters
AmountNet amount or gross invoice price.
GST Rate (%)Statutory tax bracket applicable to the good or service.

Formula & Calculation Logic

Mathematical Model

GST Exclusive: Tax = Amount × (Rate / 100), Total = Amount + Tax | GST Inclusive: Base = Amount × [100 / (100 + Rate)], Tax = Amount - Base

GST formulas for exclusive and inclusive tax accounting.

Variables Breakdown

RateApplicable GST percentage (e.g. 18%)
CGSTHalf of GST rate for Central Government
SGSTHalf of GST rate for State Government

Frequently Asked Questions (FAQ)

Disclaimer: This calculator is provided for educational and illustrative purposes only. Actual financial outcomes may vary based on statutory changes, lender terms, fund fees, and prevailing market dynamics.