Easily calculate GST for any amount in India with this free online tool. Instantly get detailed CGST, SGST, and IGST breakdowns—whether you’re adding or removing tax.

GST Calculator (India)

Enter Amount (INR): Select GST Rate (%): 5% 12% 18% 28% Select GST Type: Intra-State (CGST + SGST) Inter-State (IGST) Calculate

🧮 India GST Calculator – Instantly Calculate CGST, SGST & IGST for Every Transaction

The introduction of Goods and Services Tax (GST) in India brought major reforms to the taxation system. While it simplified tax collection and reduced complexity, understanding how to apply CGST, SGST, or IGST correctly can still be a bit tricky—especially for small businesses, freelancers, and even regular consumers.

That’s where the India GST Calculator comes in handy. It’s a free online tool that helps you quickly calculate the breakdown of taxes based on your transaction type—whether it’s intra-state or inter-state—and ensures accurate billing and compliance.

In this guide, we’ll walk you through how to use the calculator, explain the basics of GST, and show how this tool can make daily tax calculations easier.

🧾 What Is GST in India?

GST stands for Goods and Services Tax , a comprehensive indirect tax implemented nationwide in 2017. Its goal was to unify multiple taxes like VAT, excise duty, and service tax into a single, transparent system—making tax filing and payment more efficient across the country.

There are three main types of GST used in India:

• CGST (Central GST) – Collected by the central government
• SGST (State GST) – Collected by the respective state government
• IGST (Integrated GST) – Applied to interstate transactions

Knowing which tax applies is crucial whether you’re issuing invoices, filing returns, or just verifying the charges on a bill.

🛠️ How to Use the India GST Calculator

This easy-to-use tool simplifies tax calculations and instantly shows the breakdown of CGST, SGST, or IGST depending on your input. Here’s how to use it:

Step 1: Enter the Base Amount

You can start with either the pre-tax amount (excluding GST) or the final price (including GST).

Step 2: Choose the Applicable GST Rate

Select from common rates like 5%, 12%, 18%, and 28%—or enter a custom rate if needed.

Step 3: Select Your Transaction Type

Choose between:

• CGST + SGST for local (intra-state) sales
• IGST for interstate transactions

Step 4: View the Results

The calculator instantly displays:

✔️ Total GST amount
✔️ Tax split (CGST/SGST or IGST)
✔️ Final invoice value (if starting without tax) or taxable base (if starting with total)

Bonus Feature: Reverse Calculation Mode
Switch between “Add GST” and “Remove GST” modes to suit your calculation needs—ideal for invoice preparation or verifying received payments.

🧮 Why You Need This Tool

Whether you’re managing a small business, preparing invoices, or simply trying to understand your purchase bills, the India GST Calculator offers several benefits:

🧾 Accurate tax breakup for proper invoicing
💼 Helps entrepreneurs generate GST-compliant documents
🔄 Fast reverse calculation for inclusive pricing
✅ No installation or registration required
📱 Fully mobile-friendly for instant access anywhere

Forget spreadsheets or manual math—this tool does all the work with precision and speed.

🏷️ Sample GST Calculation

Let’s say you’re selling an item at ₹1,000 with an 18% GST rate.

For local sale (intra-state):

• CGST = ₹90
• SGST = ₹90
• Total = ₹1,180

For interstate sale:

• IGST = ₹180
• Total = ₹1,180

If someone gives you ₹1,180 including GST, use the reverse mode to find the original taxable amount was ₹1,000.

💡 Tips for Using GST Correctly

✅ Double-check the correct GST rate applicable to your product or service.
📜 For B2B interstate sales, ensure IGST is applied and invoice format is correct.
📅 Use the calculator before uploading data to the GSTR-1 portal for error-free returns.
💰 Round off decimals carefully to maintain clean financial records.

This tool minimizes errors and ensures your tax reporting aligns with current GST guidelines.

🌟 Final Thoughts

Though GST was introduced to streamline taxation in India, applying it accurately still requires attention to detail. The India GST Calculator makes this process simple, fast, and error-free—no matter where you are or what kind of transaction you’re handling.

It’s ideal for:

🛒 Retailers
🧑‍💼 Accountants
👨‍💻 Freelancers
📦 E-commerce sellers
🎓 Students and teachers

And the best part? It’s completely free and available online whenever you need it.

Try the India GST Calculator today and take the guesswork out of tax time!