GST Calculator
User Reviews
P. Murti : This tool is amazing! It saved me a lot of time calculating GST for multiple items.
J. Singh: Very easy to use and accurate. Highly recommended!
Anita Menon: The best GST calculator I’ve used. Love the social share feature!
Aditya J: Simple, fast, and reliable. Great job!
Online India GST Calculator

In today’s fast-paced business environment, having quick access to precise GST calculations is essential for every entrepreneur, accountant, and consumer. Our free India GST Calculator provides the perfect solution, offering instant computations for all standard tax slabs (5%, 12%, 18%, and 28%) with complete transparency. Whether you’re generating invoices, verifying bills, or planning finances, this powerful Calculator simplifies your tax-related tasks with unmatched accuracy.
How to Calculate GST Online
- Enter the base amount
- Choose the applicable GST rate (5%, 12%, 18%, or 28%)
- Select “Inclusive” or “Exclusive” mode
- Get your GST amount and total instantly

Updated with the latest 2025 GST rates, our calculator ensures you always work with current tax slabs for precise financial calculations.
GST Inclusive and Exclusive Calculator
- Inclusive Mode: Calculate the pre-GST amount from a GST-inclusive price
- Exclusive Mode: Add GST to a base amount to get the final price
Why Use Our Calculator?
✅ 100% Free & No Registration
✅ Mobile-Friendly Design
✅ Saves Time on Manual Calculations
✅ Rapid GST Calculator
✓ Mixed-rate invoice handling
✓ Error-free computations
✓ Instant results with no waiting
Find More Tax Calculator Here
Perfect For:
- Business owners creating invoices
- Accountants reconciling financial records
- Purchasing managers verifying supplier bills
- Consumers understanding tax components
- Students learning about GST calculations
Get error-free GST computations in seconds—try our Calculator now! Experience the convenience of professional-grade tax computations at your fingertips. Our reliable India GST Calculator eliminates guesswork and manual errors, saving you time and ensuring complete accuracy for all your tax-related needs. Try it today – your stress-free solution for all GST calculations and GST search!
Full Forms of…
1. GST
Full Form of GST: Goods and Services Tax
Brief Note:
GST is a unified indirect tax levied on the supply of goods and services across India. It replaced multiple cascading taxes (like VAT, excise, and service tax) with a single, transparent system. GST is divided into CGST, SGST, and IGST depending on the nature of the transaction (intra-state or inter-state).
2. IGST
Full Form of IGST: Integrated Goods and Services Tax
Brief Note:
IGST is charged on inter-state (between two states) transactions and imports/exports. It is collected by the Central Government and later distributed between the states involved. IGST ensures seamless tax credit flow across state borders.
3. CGST
Full Form of CGST: Central Goods and Services Tax
Brief Note:
CGST is levied by the Central Government on intra-state (within the same state) transactions. It is applied alongside SGST (State GST) and replaces previous central taxes like excise duty and service tax. Revenue goes to the Centre.
4. SGST
Full Form of SGST: State Goods and Services Tax
Brief Note:
SGST is the state counterpart of CGST, applied on intra-state supplies. It is collected by the State Government and replaces taxes like VAT and luxury tax. The revenue goes entirely to the state where the transaction occurs.

FAQs
1. What is a GST Calculator?
A GST Calculator is a free online tool that instantly computes Goods and Services Tax (GST) amounts for invoices, purchases, or sales. It supports all GST slabs (5%, 12%, 18%, 28%) and handles both inclusive/exclusive calculations.
2. How to calculate GST online?
Use our GST calculation online tool:
Enter the base amount.
Select the GST rate (5%, 12%, 18%, or 28%).
Choose between inclusive or exclusive mode.
Results display GST amount and total instantly.
3. What are the current GST rates for 2025?
Our GST rate calculator 2025 follows India’s updated tax slabs:
5%: Essential goods (e.g., packaged foods, medicines).
12% & 18%: Processed foods, electronics, services.
28%: Luxury items (e.g., cars, aerated drinks).
4. How does a GST inclusive/exclusive calculator work?
Exclusive Mode: Adds GST to the base amount (e.g., ₹1,000 + 18% GST = ₹1,180).
Inclusive Mode: Extracts GST from the total (e.g., ₹1,180 includes ₹180 GST
5. Is this GST Calculator free to use?
Yes! Our Calculator is 100% free, with no registration or hidden charges.
7. How accurate is this Calculator?
Our tool adheres to India’s official GST laws, ensuring precise calculations for businesses, freelancers, and consumers.
8. How do I calculate GST for composite or mixed-rate invoices?
Our GST Calculator can handle composite invoices with these simple steps:
Break down your invoice into items with different GST rates (5%, 12%, 18%, 28%)
Calculate GST for each item separately using our tool
Sum the totals for your final invoice amount
Example:
Item A (5% GST): ₹1,000 → GST ₹50
Item B (18% GST): ₹2,000 → GST ₹360
Total: ₹3,000 + ₹410 GST = ₹3,410