Free Online GST Calculator — India 2025

GST Calculator Online Free

Calculate GST amounts instantly. Add GST to get inclusive price, or remove GST to find the base price. Covers all GST slabs: 5%, 12%, 18%, and 28%. Perfect for invoicing and tax compliance.

GST Rate Slabs in India (2025)
0%Essential food items (rice, wheat, milk, eggs), healthcare, education, agricultural produce
5%Packed food items, common medicines, footwear (below ₹1,000), apparel (below ₹1,000), household items
12%Processed food, computers, mobile phones (under ₹12,000), business class air travel
18%Most services (IT, consulting, restaurants), mobile phones (above ₹12,000), electronics, financial services
28%Luxury cars, tobacco, aerated drinks, gambling, luxury hotels, high-end consumer goods
How to Calculate GST — Formulas

1. Adding GST to Base Price (Exclusive to Inclusive)

GST Amount = Base Price × GST Rate / 100

Final Price = Base Price + GST Amount

Example: ₹10,000 + 18% GST = ₹10,000 + ₹1,800 = ₹11,800

2. Removing GST from Inclusive Price

Base Price = Inclusive Price / (1 + GST Rate/100)

GST Amount = Inclusive Price - Base Price

Example: ₹11,800 at 18% GST → Base = ₹11,800 / 1.18 = ₹10,000; GST = ₹1,800

3. Intra-State (CGST + SGST Split)

CGST = GST Amount / 2

SGST = GST Amount / 2

Example: 18% GST of ₹1,800 → CGST = ₹900 + SGST = ₹900

Why Use Our Free Online GST Calculator?
Calculate GST for any amount instantly
Supports all GST rate slabs (5%, 12%, 18%, 28%)
Shows CGST and SGST split for intra-state
Shows IGST for inter-state transactions
Add or remove GST from price
No registration required — completely free
Works on mobile, tablet, and desktop
Useful for business invoicing and compliance

Understanding GST in India: A Quick Guide

GST (Goods and Services Tax) is a comprehensive indirect tax that replaced multiple central and state taxes in India from July 1, 2017. It is levied on supply of goods and services and follows a destination-based tax system.

India has a dual GST structure: the Centre levies CGST and each State levies SGST on intra-state supplies. For inter-state supplies, the Centre levies IGST which is later distributed to the consuming state. This eliminates the cascading effect of taxes that existed under the old tax system.

For businesses, the Input Tax Credit (ITC) mechanism under GST allows setting off GST paid on purchases against GST collected on sales, effectively reducing the overall tax burden in the supply chain. Our GST calculator helps businesses and individuals calculate the correct GST amount for invoicing, purchase planning, and tax compliance.

Frequently Asked Questions

Calculate GST Instantly

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