Multi-Item GST Calculator – Accurate Billing with IGST, CGST, SGST Breakdown

If you’re a business owner, freelancer, or seller registered under GST, calculating taxes manually for every invoice can be frustrating. That’s why we built this easy-to-use Multi-Item GST Calculator — designed to simplify your billing and help you stay 100% GST-compliant.

What Is a Multi-Item GST Calculator?

The Multi-Item GST Calculator is a free online tool that allows you to:

• Add multiple items with price, quantity, and GST rate
  
  
• Select transaction type: Intra-State (CGST + SGST) or Inter-State (IGST)
  
  
• See real-time tax breakdowns for each row
  
  
• Instantly get:
  
  
  • ✅ CGST
    
    
  • ✅ SGST
    
    
  • ✅ IGST
    
    
  • ✅ Total GST
    
    
  • ✅ Grand Total (incl. tax)
    
    

Whether you’re billing clients or preparing quotations, this calculator removes the guesswork.

How to Use the GST Calculator?

1. Enter item name, price and quantity.
   
   
2. Choose GST rate (5%, 12%, 18%, or 28%).
   
   
3. Select transaction type:
   
   
   • 🟢 Intra-State for CGST+SGST (within your state)
     
     
   • 🔵 Inter-State for IGST (other states)
     
     
4. Add more items by clicking “+ Add Item”.
   
   
5. The tool instantly shows:
   
   
   • GST applied
     
     
   • Total amount with tax
     
     
   • Split of CGST, SGST, or IGST
     
     

Who Should Use This Calculator?

This tool is perfect for:

• Retailers & wholesalers
  
  
• Freelancers and service providers
  
  
• Accountants
  
  
• Online sellers
  
  
• Small businesses issuing GST invoices
  
  

It helps you generate accurate GST totals — even for multi-product bills — and saves time during invoicing.

Features of This GST Calculator

• 💡 Real-time GST & total calculation
  
  
• 🧾 CGST & SGST or IGST display
  
  
• ➕ Multi-item support
  
  
• 📱 Mobile responsive
  
  
• ⚡ Lightweight and fast
  
  
• 🆓 100% Free to use
  
  

Example

Let’s say you sell a mobile for ₹18,000 with 18% GST (Intra-state):

• CGST: ₹1,620
  
  
• SGST: ₹1,620
  
  
• Total GST: ₹3,240
  
  
• Grand Total: ₹21,240
  
  

No need for a spreadsheet. Our calculator does it instantly.

Final Thoughts

If you’re tired of complicated spreadsheets or GST formula confusion, this free online Multi-Item GST Calculator is your go-to solution. It’s ideal for anyone who wants fast, reliable, and accurate GST billing with zero stress.

Try it now and streamline your billing workflow.