GST Calculator India - Add, Remove, Reverse GST & Invoice Builder
GST Calculator
Add / Remove / Reverse GST with CGST, SGST, IGST breakdown and invoice builder
Enter Base Price (before GST)
Final Price (incl. GST)
₹11,8,00
GST @ 18% = ₹1,8,00
Breakdown
GST Slab Rates Reference
- Fresh food
- Education
- Healthcare
- Transport
- Restaurants (< ₹7.5L)
- Packaged food
- Business class tickets
- Frozen meat
- Butter
- IT services
- Telecom
- Restaurants (≥ ₹7.5L)
- Capital goods
- Luxury items
- Cars
- Tobacco
- Aerated drinks
What Does This Tool Do?
This GST Calculator helps you calculate GST inclusive/exclusive, reverse GST, composition scheme tax, and generate GST invoices with CGST/SGST/IGST breakdown. It is designed for business owners, freelancers, accountants, chartered accountants, and consumers who need quick and reliable results.
When Should You Use It?
You should use this tool when:
- •You need to add or remove GST from a product price for invoicing
- •You want to reverse-calculate the base price from an MRP that includes GST
- •You are evaluating the GST Composition Scheme for your small business
- •You need to generate a GST-compliant invoice with line items
- •You want to understand CGST, SGST, and IGST for intra-state vs inter-state transactions
How to Use This Tool
Enter or upload the required information
Click on the calculate / convert button
Get instant results
Common Use Cases
- •Business invoicing and billing with GST
- •E-commerce product pricing with tax
- •GST return preparation and filing
- •Accounting and bookkeeping
- •Composition scheme tax planning
Frequently Asked Questions
What is the difference between CGST, SGST, and IGST?
CGST (Central GST) and SGST (State GST) are charged on intra-state transactions, each at half the GST rate. IGST (Integrated GST) is charged on inter-state transactions at the full GST rate.
How does the GST Composition Scheme work?
The Composition Scheme allows small businesses (turnover up to ₹1.5 Cr) to pay GST at a flat rate (1%, 2%, or 6%) on their total turnover instead of collecting it from customers. They cannot claim input tax credit.
What is Reverse GST calculation?
Reverse GST calculation extracts the base price and tax component from a final price that already includes GST. For example, if MRP is ₹11,800 at 18% GST, the base price is ₹10,000 and GST is ₹1,800.
What are the current GST rates in India?
India has 5 GST slabs: 0% (essentials like fresh food, education), 5% (transport, packaged food), 12% (business class tickets, frozen meat), 18% (IT services, telecom, most goods), and 28% (luxury items, cars, tobacco).
Can I generate a printable GST invoice?
Yes, use the Invoice Builder tab to add items, set GST rates, and generate a printable A4 PDF invoice with complete GST breakdown.
How to Use This Tool
Enter or upload the required information
Click on the calculate / convert button
Get instant results
Frequently Asked Questions
Is this GST Calculator free to use?
Yes, it is completely free and requires no signup or registration.
Is my data saved?
No. All processing happens locally in your browser for 100% privacy.
Can I use this GST Calculator on mobile?
Yes, it works perfectly on all devices including mobile phones and tablets.