Skip to main content
Desi Calculator Logo Desi Calculator
Skip to main content
Everyday Math 🇮🇳

Indian GST Tax Calculator — Split CGST, SGST, and IGST for FY 2026-27

This calculator uses the standard Indian GST slabs of 5%, 12%, 18%, and 28% mandated by the GST Council of India. It performs exclusive (Add GST) and inclusive (Remove GST) calculations to split the tax amount equally into CGST and SGST.

1. Transaction Details

Frequently Asked Questions (FAQ)

How do I calculate the base price by removing 18% GST?

To remove 18% GST from a total price of ₹11,800, divide the gross amount by 1.18 (₹11,800 / 1.18 = ₹10,000 base). The difference of ₹1,800 is the GST tax paid.

What is the CGST and SGST split on an 18% transaction?

For intra-state transactions, the 18% GST is split equally into 9% CGST (Central GST) and 9% SGST (State GST) paid to the central and state governments respectively.

When is IGST charged instead of CGST and SGST?

Integrated GST (IGST) is charged on inter-state supply of goods or services. The full rate (e.g., 18%) is applied as IGST, which is collected by the center and then distributed.

What are the current GST tax slabs in India for 2026?

The active GST slabs are 5% (daily essentials), 12% (processed foods), 18% (standard services/goods), and 28% (luxury items). Some items like basic farm products are tax-free.

Is there a penalty for late filing of GST in India?

Yes, late filing of GST returns attracts a daily late fee of ₹50 (₹25 each for CGST and SGST) for regular returns, capped at ₹5,000, along with 18% per annum interest on unpaid tax.

Rates sourced from official government portals — see data sources & verification dates

Saved to Browser History!

Your calculation is securely saved to this device. No account required!

About This Calculator

Target Audience: Salaried taxpayers, investors & retirees planning Indian tax & wealth growth Last verified: 2026-06-30

💡 What Does This Calculator Do?

This calculator computes the Goods and Services Tax (GST) for transactions in India. It helps business owners, consumers, and accountants add or remove GST from a total price using the standard Indian tax slabs (5%, 12%, 18%, and 28%).

engine_type: compiled | format: inr

📋 How to Use It

  1. 1
    Amount (₹): Enter the base price or the total price.
  2. 2
    GST Rate (%): Select the applicable GST rate (5%, 12%, 18%, or 28%).
  3. 3
    Calculation Type: Choose "Add GST" to find the tax on a net amount, or "Remove GST" to find the original price from a gross amount.

🧬 The Logic Explained Simply

  • The Concept: GST is a consumption tax levied on goods and services. Adding GST calculates tax on top of the base price. Removing GST back-calculates the original price by dividing the gross price by (1 + tax rate).
  • The Formula:
  • Add GST: Tax = Amount × (GST Rate / 100); Total = Amount + Tax
  • Remove GST: Original Amount = Amount / (1 + GST Rate / 100); Tax = Amount - Original Amount

💡 Real-World Calculation Breakdown

For example, you buy an item with a price tag of ₹1,000.

  • Case 1: Base price is ₹1,000 and GST is 18% (Add GST).
  • GST Amount = ₹1,000 × 0.18 = ₹180. Total cost = ₹1,180.
  • Case 2: Gross price is ₹1,000 including 18% GST (Remove GST).
  • Original price = ₹1,000 / 1.18 = ₹847.46
  • GST Amount = ₹1,000 - ₹847.46 = ₹152.54

You Might Also Like

Airtel Payment Bank IFSC Code Finder & Transfer Helper

This tool provides the official nationwide IFSC code for Airtel Payments Bank (AIRP0000001) and generates verified be...

Payment Banks IFSC Code Directory & Account Formats

This directory indexes the centralized IFSC codes, account numbering patterns, and RBI balance limits for all Reserve...

Indian Tax Regime Calculator

This tool compares how much tax you owe under the two options provided by the government. It calculates your tax usin...

Step-Up SIP Calculator

This tool shows how your money grows when you invest a fixed amount every month and increase that amount once every y...