What is the difference between CGST, SGST and IGST?

For intra-state transactions (supplier and buyer in the same state), GST is split equally into CGST (Central GST) and SGST (State GST). For example, 18% GST on an intra-state sale means 9% CGST + 9% SGST. For inter-state transactions, only IGST (Integrated GST) applies at the full rate. The total tax amount is the same in both cases — only the collection mechanism differs.

What GST rate applies to IT services and software?

Software products, IT services, consulting, SaaS, and most professional services attract 18% GST in India. This includes freelance software development, app development, web design, and cloud services. Exports of services are zero-rated (0% GST) with the option to claim input tax credit refund.

How do I calculate GST-inclusive price?

Use the Inclusive (Extract GST) mode. Enter the total price including GST, select the GST rate, and the calculator back-calculates the base amount and GST component. Formula: Base Price = Total Price ÷ (1 + GST Rate%). For example, a ₹118 GST-inclusive price at 18% means base = ₹118 ÷ 1.18 = ₹100, and GST = ₹18.

Is GST applicable on exports from India?

Exports are zero-rated under GST in India. The exporter charges 0% GST on exports and can claim a refund of all input GST paid on goods and services used in the export supply. This makes Indian exports competitive globally. This calculator covers domestic transactions only.

What are the quick presets in this GST calculator?

The calculator includes presets for common categories: Food & Beverages (5%), Medicines & Pharma (12%), Software & IT Services (18%), Professional Services (18%), Restaurants with AC (18%), and Luxury Goods (28%). These presets auto-select the correct rate so you do not need to look up rates manually.

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GST Calculator — CGST, SGST & IGST

Calculate GST at 5%, 12%, 18% or 28%. Shows CGST+SGST for intra-state and IGST for inter-state. Free GST calculator India.

About this tool

Calculate Goods and Services Tax (GST) on any amount instantly. Supports all four GST rate slabs — 5%, 12%, 18%, and 28% — with both exclusive (add GST on top) and inclusive (extract GST from total) calculation modes. For intra-state transactions, the calculator automatically splits GST into equal CGST and SGST components. For inter-state transactions, it shows the full IGST amount. All calculations follow GST rules applicable for FY 2024-25.

Quick Presets

Amount (₹) *

₹

GST Rate

Calculation Mode

Transaction Type

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Enter an amount to calculate GST

How we calculate this

All calculations run entirely in your browser — no data is sent to any server. Here is exactly how this tool works:

Enter the base amount or the GST-inclusive total price
Select the applicable GST rate — 5%, 12%, 18%, or 28%
Choose Exclusive mode (GST added on top) or Inclusive mode (GST already included in price)
Select Intra-state (CGST + SGST) or Inter-state (IGST) transaction type
Instantly see the tax breakdown, CGST/SGST split, and total payable amount

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About this tool

How we calculate this

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