What is GST (Goods and Services Tax)?

GST, or Goods and Services Tax, is a unified indirect tax system launched in India on 1 July 2017. It replaced several older taxes including VAT, Excise Duty, Service Tax and Entry Tax. GST applies to almost all goods and services sold in India. Understanding GST and calculating it quickly is essential for business owners, freelancers, accountants, and even regular shoppers. Our GST Calculator helps you get accurate GST values instantly without doing manual calculations.

GST Calculator for 5%, 18% in India

This GST calculator works for all GST rates in India including 5% ,18%. You can easily add GST to a base price or remove GST from an inclusive amount for billing, invoicing, and accounting purposes.

Why Use Our GST Calculator?

This free online GST calculator is designed to help users calculate GST amounts for 5%, 12%, 18%, and 28% tax slabs. Whether you need to compute GST for billing, accounting, invoicing, or simple verification, this tool gives precise results in seconds. It supports both GST Exclusive and GST Inclusive calculations, making it suitable for all types of use cases.

GST Calculation Formulas

1. Add GST to Amount (GST Exclusive → Total Price)

GST Amount = (Original Amount × GST%) / 100
Total Amount = Original Amount + GST Amount
        

2. Remove GST from Amount (GST Inclusive → Base Price)

Base Amount = (GST Inclusive Amount × 100) / (100 + GST%)
GST Amount = GST Inclusive Amount – Base Amount
        

GST Rates in India

• 5% GST – Essential goods, medicines, household items
• 18% GST – Restaurants, electronics, software services

Examples of GST Calculation

Example 1: Add GST (Exclusive)

If a product costs ₹1,000 and GST is 18%:
GST = 1000 × 18% = ₹180
Total Amount = 1000 + 180 = ₹1,180

Example 2: Remove GST (Inclusive)

If the bill amount is ₹1,180 including 18% GST:
Base Price = (1180 × 100) ÷ 118 = ₹1,000
GST Amount = 1180 – 1000 = ₹180

Features of Our GST Calculator

• ✔ Instant GST calculation
• ✔ Supports all GST slabs
• ✔ Works for GST add & GST remove
• ✔ 100% free and no login required
• ✔ Mobile-friendly and fast
• ✔ Accurate calculations for business and personal use

Who Can Use This GST Calculator?

• 🧾 Business owners and shopkeepers
• 📊 Accountants, CA students, tax professionals
• 💻 Freelancers and service providers
• 🛍 Online sellers and retailers
• 📱 Everyday customers checking bills

Benefits of Using a GST Calculator

• ✔ Avoids manual calculation mistakes
• ✔ Saves time during billing
• ✔ Useful for GST returns and accounting records
• ✔ Helps verify invoices from shops and vendors
• ✔ Works for every GST rate including custom values

Related Financial Tools

• Income Tax Calculator
• Invoice Generator
• Percentage Calculator
• SIP Calculator

Frequently Asked Questions (FAQ)

1. What is GST?

GST stands for Goods and Services Tax. It is a single indirect tax system that applies to almost every product and service in India.

2. How is GST calculated?

GST can be calculated using: GST = Amount × GST% / 100. You can also use this calculator for instant results.

3. How to remove GST from a total amount?

Use the formula: Base Amount = (Total Amount × 100) / (100 + GST%)

4. Is this GST calculator free?

Yes. This tool is completely free and works on all devices.

5. Which GST rates are supported?

All GST slabs including 5%, 18% and any custom rate.

Conclusion

GST calculation can often feel confusing, but with this free GST Calculator, you can easily compute GST amounts, total prices, and pre-GST values in seconds. Whether you’re a business owner, consumer, or professional, this tool makes GST calculation simple, fast, and reliable.